Academic literature on the topic 'Phenyl-derivative'
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Journal articles on the topic "Phenyl-derivative"
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Collins, David J., Timothy C. Hughes, and Wynona M. Johnson. "Dihydro-1,2,4-triazin-6(1H)-ones. III. Oxidation Products of 1-Methyl-3-phenyl- 4,5-dihydro-1,2,4-triazin-6(1H)-one." Australian Journal of Chemistry 52, no. 10 (1999): 971. http://dx.doi.org/10.1071/ch99047.
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1-Methyl-3-phenyl-4,5-dihydro-1,2,4-triazin-6(1H)-one (1) undergoes aerial oxidation to give a mixture of 1- methyl-3-phenyl-1,2,4-triazin-6(1H)-one (2) and 1-methyl-3-phenyl-1,4-dihydro-1,2,4-triazine-5,6-dione (3). The dehydro derivative (2) was cleanly prepared by the oxidation of (1) with 2,3-dichloro-5,6-dicyano-1,4- benzoquinone (ddq). The dehydro derivative (2) underwent a surprising rearrangement to the triazole (12) upon oxidation with OxoneR. Several attempts at unambiguous synthesis of the α-dicarbonyl derivative (3) were unsuccessful; it was obtained, together with the 1,4-dimethyl derivative (13) by methylation of 3-phenyl-1,4- dihydro-1,2,4-triazine-5,6-dione (4) with sodium hydride and methyl iodide.
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Nardis, Sara, Daniel O. Cicero, Silvia Licoccia, Giuseppe Pomarico, Beatrice Berionni Berna, Marco Sette, Giampaolo Ricciardi, et al. "Phenyl Derivative of Iron 5,10,15-Tritolylcorrole." Inorganic Chemistry 53, no. 8 (April 3, 2014): 4215–27. http://dx.doi.org/10.1021/ic5003572.
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Saxena, N., S. Kumar, M. K. Sharma, and S. P. Mathur. "Corrosion Inhibition of Mild Steel in Nitric Acid Media by some Schiff Bases Derived from Anisalidine." Polish Journal of Chemical Technology 15, no. 1 (March 1, 2013): 61–67. http://dx.doi.org/10.2478/pjct-2013-0011.
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Corrosion inhibition performance of mild steel in nitric acid solution containing different concentration of anisalidine derivative Schiff bases viz. N- (4-nitro phenyl) p-anisalidine (SB1), N- (4-chloro phenyl) p-anisalidine (SB2), N- (4-phenyl) p-anisalidine (SB3), N- (4-methoxy phenyl) p-anisalidine (SB4), N- (4-hydroxy phenyl) p-anisalidine (SB5) has been investigated using mass loss, thermometric and potentiostate polarization technique. Inhibition efficiencies of Schiff bases have been evaluated at different acid strength. The inhibition efficiency was found larger than their parent amines. Inhibition efficiencies of synthesized Schiff bases increase with inhibitor concentration. Inhibition efficiency increases up to 98.32% with ansalidine derivative Schiff base.
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Krečmerová, Marcela, Hubert Hřebabecký, Milena Masojídková, and Antonín Holý. "Synthesis of 5-Phenyl-2(1H)-pyrimidinone Nucleosides." Collection of Czechoslovak Chemical Communications 61, no. 3 (1996): 458–77. http://dx.doi.org/10.1135/cccc19960458.
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Reaction of 2-phenyltrimethinium salt 1 with thiourea and subsequent reaction with chloroacetic acid afforded 5-phenyl-2(1H)-pyrimidinone (3). Its silyl derivative 4 was condensed with 1-O-acetyl-2,3,5-tri-O-benzoyl-D-ribofuranose under catalysis with tin tetrachloride or trimethylsilyl trifluoromethanesulfonate to give protected nucleoside 5 together with 5',O6-cyclo-5-phenyl-1,3-bis- (β-D-ribofuranosyl)-6-hydroxy-5,6-dihydro-2(1H,3H)-pyrimidinone (7). The greatest amounts of 7 were formed with the latter catalyst. Nucleosidation of the silyl derivative 4 with protected methyl 2-deoxy-D-ribofuranoside 8 or 2-deoxy-D-ribofuranosyl chloride 9 afforded 1-(2-deoxy-3,5-di-O-p-toluoyl-β-D-ribofuranosyl)-5-phenyl-2(1H)-pyrimidinone (10) and its α-anomer 11. Reaction of 10 and 11 with methanolic ammonia gave free 2'-deoxynucleosides 12 and 13. Compound 13 was converted into 5'-O-tert-butyldiphenylsilyl-3'-O-mesyl derivative 14 which on heating with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and subsequent cleavage with tetrabutylammonium fluoride afforded 2',3'-dideoxy-2',3'-didehydronucleoside 15. Reaction of the silyl derivative 4 with 1,2-di-O-acetyl-3,5-di-O-benzoylxylofuranose (18), catalyzed with tin tetrachloride, furnished 1-(2-O-acetyl-3,5-di-O-benzoyl-β-D-xylofuranosyl)-2(1H)-pyrimidinone (19) which was deprotected to give the β-D-xylofuranosyl derivative 22. As a side product, the nucleosidation afforded the β-D-xylopyranosyl derivative 23. Deacetylation of compound 19 gave 1-(3,5-di-O-benzoyl-β-D-xylofuranosyl)-5-phenyl-2(1H)-pyrimidinone (24) which on reaction with thionyl chloride afforded 2'-chloro-2'-deoxynucleoside 25 and 2',O6-cyclonucleoside 26. Heating of compound 25 with DBU in dimethylformamide furnished the lyxo-epoxide 27 which on reaction with methanolic ammonia was converted into free 1-(2,3-anhydro-β-D-lyxofuranosyl)-5-phenyl-2(1H)-pyrimidinone (28). Reaction of 1,2-di-O-acetyl-5-O-benzoyl-3-O-methanesulfonyl-D-xylofuranose (30) with silyl derivative 4 gave the nucleoside 31 which by treatment with DBU was converted into an equilibrium mixture of 5'-benzoylated arabinofuranoside 33a and its 2',6-anhydro derivative 33b.
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Zhang, Yu-yang, Jian-Ting Pan, and Jian-Yan Huang. "4-{Phenyl[4-(6-phenyl-2,2′-bipyridin-4-yl)phenyl]amino}benzaldehyde." Acta Crystallographica Section E Structure Reports Online 70, no. 8 (July 2, 2014): o840. http://dx.doi.org/10.1107/s1600536814013361.
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The title molecule, C35H25N3O, is a triphenylamine derivative with the 4-position substituted by an aldehyde group, and the 4′-position substituted by a 6-phenyl-2,2′-bipyridine group. The whole molecule is non-planar and the dihedral angle between the core benzene and pyridine rings is 36.96 (5)°. The dihedral angle between the phenyl and benzaldehyde groups bonded to the amine N atom is 70.86 (5)°.
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Böhm, Stanislav, Richard Kubík, Martin Hradilek, Jan Němeček, Michal Hušák, Bohumil Kratochvíl, and Josef Kuthan. "Sterically Crowded Heterocycles. II. Conformational Structure of 2-Phenyl-3-[(Z)-1,3-diphenyl-3-oxopropenyl]imidazo[1,2-a]pyridine and Related Compounds." Collection of Czechoslovak Chemical Communications 60, no. 1 (1995): 115–26. http://dx.doi.org/10.1135/cccc19950115.
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Conformational behaviour of 2-phenyl-3-[(Z)-1,3-diphenyl-3-oxopropenyl]imidazo[1,2- a]pyridine I is studied using a molecular isoenergy map calculated by the PM3 method. A predicted potency of this approach is discussed with respect to the experimental solid state structures of related compounds I - IV. Complete X-ray structures of 7-methyl derivative IV and 11-phenyl derivative V are reported.
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Konečný, Václav, Jozefína Žúžiová, Štefan Kováč, and Tibor Liptaj. "Synthesis of Novel 4-Amino-5-(disubstituted amino)-2-phenyl-2H-pyridazin-3-ones." Collection of Czechoslovak Chemical Communications 62, no. 5 (1997): 800–808. http://dx.doi.org/10.1135/cccc19970800.
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Substituted 4-amino-2-phenyl-2H-pyridazin-3-ones 5a-5j have been prepared from 4-amino-5-chloro-2-phenyl-2H-pyridazin-3-one 1 which on reactions with acetyl chloride or acetic anhydride gives 4-acetylamino derivative 2 or 4-diacetylamino derivative 3, respectively. Derivatives 2 and 3 with dialkylamines and cyclic amines yielded appropriate 4-acetylamino-5-(disubstituted amino)-2-phenyl-2H-pyridazin-3-ones 4a-4j. Subsequent alkaline hydrolysis of the acetylamino derivatives 4a-4j let to the title compounds 5a-5j, which were screened for pesticidal activity, but none of them reached activity of the used standards.
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Mistry, Rakesh N., and K. R. Desai. "Studies on Synthesis of Some Novel Heterocyclic Chalcone, Pyrazoline, Pyrimidine - 2 - One, Pyrimidine - 2 - Thione,para-Acetanilide Sulphonyl and Benzoyl Derivatives and their Antimicrobial Activity." E-Journal of Chemistry 2, no. 1 (2005): 30–41. http://dx.doi.org/10.1155/2005/953107.
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1, 2 - Dichloro benzene on chlorosulphonation by chlorosulphonic acid gives 1, 2 - [dichloro] - benzene sulphonyl chloride which on condensation withp–amino acetophenone gives 1-[acetyl] - 1’ , 2’ - [dichloro] - dibenz sulphonamide derivative. This derivative undergo condensation with 2,4- dichloro benzaldehyde gives 1- [3” - (sub. phenyl) - 2” - propene - 1” - one] - 1’ , 2’ - [dichloro] - dibenz sulphonamide derivative which on reaction with 99% hydrazine hydrate and glacial acetic acid gives 1-[acetyl]-3- [1’ , 2’ - (dichloro) - dibenz sulphonamide] -5 - [2” , 4” - dichloro phenyl] - 2 - pyrazoline derivative. This derivative reacts with various substituted aldehydes to give corresponding substituted chalcone derivatives [1(a-j)]. Now, these chalcone derivatives [1(a-j)] on condensation with urea gives corresponding substituted pyrimidine - 2 - one derivatives [2(a-j)] and on condensation with thio-urea gives corresponding substituted pyrimidine- 2 -thione derivatives [3(a-j)]. Further, these chalcone derivatives [1(a-j)] on reaction with 99% hydrazine hydrate gives 1 - [1’ - (H) - 5’ - (sub. phenyl) - 2’ - pyrazoline]- 3 - [1” , 2” - (dichloro) - dibenz sulphonamide] - 5 - [2’’’ , 4’’’ - dichloro phenyl]-2- pyrazoline derivatives [4(a-j)] as an intermediate compounds, which on condensation with p-acetanilide sulphonyl chloride gives corresponding substituted p - acetanilide sulphonyl derivatives [5(a-j)] and on condensation with benzoyl chloride gives corresponding substituted benzoyl derivatives [6(a-j)]. Structure elucidation of synthesised compounds has been made on the basis of elemental analysis, I.R. spectral studies and 1H N.M.R. spectral studies. The antimicrobial activity of the synthesised compounds has been studied against the cultures “Staphylococcus aureus”, “Escherichia coli” and “Candela albicans”.
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Khalifa, Nagy M., Ahmed M. Naglah, Mohamed A. Al-Omara, and Abd El-Galil E. Amr. "Synthesis and Reactions of New Chiral Linear Dipeptide Candidates Using Nalidixic Acid as Starting Material." Zeitschrift für Naturforschung B 69, no. 6 (June 1, 2014): 728–36. http://dx.doi.org/10.5560/znb.2014-4031.
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A series of dipeptide heterocyclic derivatives 4-15 were synthesized using methyl 2-{[(1-ethyl- 7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridin-3-yl)carbonyl]amino}-3-ethylbutanoate (3) as starting material. Treatment of 3 with L-phenylalanine methyl ester hydrochloride afforded the corresponding dipeptide methyl ester derivative 4, which was treated with hydrazine hydrate to afford the dipeptide acid hydrazide 5. Compound 5 was coupled with aldehyde and acetophenone derivatives to afford the corresponding Schiff bases 6a-f. The hydrazide derivative 5 was reacted with ethyl acetoacetate or acetone to give compounds 7 and 8, respectively. Reaction of 5 with carbon disulfide at different conditions afforded compounds 9 and 10, which were treated with hydrazine hydrate to give the 1-amino-2-dipeptido-1,3,4-triazole derivative 11. In addition, 5 was reacted with phenyl isothiocyanate to give the thiosemicarbazide derivative 12, which was cyclized with sodium hydroxide to the dipeptido 1-phenyl-1,3,4-triazole derivative 13. Finally, treatment of 13 with methyl iodide afforded the S-methyl derivative 14, which was reacted with hydrazine hydrate to give the hydrazine derivative 15.
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Erdem, Ahmet, Hasan Genc, Nejdet Sen, Rafet Kilincarslan, and Emin Erdem. "The Synthesis and Reactions of Novel Pyrazole Derivatives by 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione Reacted with Some Hydrazones." Revista de Chimie 68, no. 1 (February 15, 2017): 143–46. http://dx.doi.org/10.37358/rc.17.1.5407.
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We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione, 1. For this, 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione, 1 was reacted with benzaldehyde(2- or 4-fluorophenyl)hydrazone to give 4-benzoyl-1-(2- or 4-fluorophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid 2a,b. Pyrazol derivative containing 2-fluorophenyl group 2a was converted into carboxylic chloride derivative 3a by thionyl chloride and then the compound 4a was obtained from reaction ammonia with compound 3a. In the next step, 4-benzoyl-1-(2-fluorophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid 2a was reacted with MeOH/H2SO4, EtOH/H2SO4, 2-nitrophenylhydrazine and 3-nitrophenylydrazine to give 5a,b and 6a,b pyrazol derivatives, respectively. The structures regarding all compounds synthesized were determined by the IR, NMR and elemental analysis method.
Dissertations / Theses on the topic "Phenyl-derivative"
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Chen, Yu-Chen, and 陳于真. "The Effect of Admantane Derivative: 2, 2-bis [4- (4-amino-3-hydroxyphenoxy) phenyl] adamantane on Colon Cancer Cells." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13517168515691465009.
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碩士國立陽明大學
藥理學研究所
92
Abstract Previously, the admantane derivative 2, 2-bis [4- (4-amino-3-hydroxyphenoxy) phenyl] adamantane (DPA) demonstrated marked anticancer activities on the sub-panel of 60 human cancer cell lines in NCI Anticancer Drug Screen System. Consequently, DPA was selected as a candidate for further examination. The objective of this study was to examine the in vitro and in vivo effects and the action mechanism of DPA on colon cancer cells. Results showed that DPA exerted inhibitory activities in vitro against three human colon cancer cell lines Colo 205, HT-29, and HCT-15 in a dose- and time-dependent manner. DPA-treated cells were arrested at G0/G1 phase as analyzed by flowcytometric analysis. After 2, 4, and 8 μM DPA treatment for 72 hours, the level of the differentiation makers fibronectin and carcinoembryonic antigen were increased. The in vivo effect of DPA on tumor growth suppression using BALB/c-nu mouse xenografts of Colo 205 cells showed that DPA significantly inhibited the growth of Colo 205 without any evidence of drug toxicity at 80 mg/kg once a week. DPA-treated Colo 205 cells showed compact aggregate formation and tight junction between cells. E-cadherin-catenin complex has an important role in contact inhibition of the growth in normal epithelial cells by activation of p27 and inducing cell cycle arrest. It was observed that Colo 205 cells were more sensitive to DPA than HT-29 and HCT-15 cells. Therefore, Colo 205 cells were used for further examination of DPA’s action mechanism. Immunoflourescence and Western blotting analyses showed that after 4 □M DPA treatment for 24 hr, E-cadherin translocated to cell membrane and the expression of dephosphorylated form of p120ctn increased concomitantly. In contrast, the level of p27 increased at 48 hr. On the other hand, the expression of p21 was induced after DPA treatment in a p53-independent manner. These results together suggest that the effect of DPA on Colo 205 may be through the induction of p21 and the increased level of p27 after the activation of E-cadherin-catenin complex.
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Krishnapriya, K. C. "Role of spin density and interchromophoric coupling in singlet fission." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5735.
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Singlet exciton fission (SEF) is the transformation of a photoexcited singlet exciton into two triplets localized on two chromophores coupled together. This process therefore produces two triplet excitons at the expense of one photon and hence can potentially improve the solar cell efficiency. An investigation into the excited state dynamics of three potential SEF candidates, pentacene dimers linked via diketopyrrolopyrrole derivative bridges, elucidates the significance of electronic spin density distribution in facilitating efficient intramolecular SEF (iSEF) in π-bridged pentacene dimers. Based on transient absorption spectroscopy measurements, efficient iSEF was only observed for the phenyl-derivative as only the phenyl-DPP bridge localizes α- and β-spin densities on distinct terminal pentacenes. Upon photoexcitation, a spin exchange mechanism enables iSEF from a singlet state which has an innate triplet pair character. An extraordinary correlation between the energy of excitation and SEF dynamics has been observed. The triplet absorption feature evolving as well as decaying at slower rate with decreasing energy of excitation was studied using transient absorption and photoluminescence measurements. This color sensitivity and origin of longer lived triplet species generated upon higher energy photoexcitation are analyzed to form a photophysical model. This contribution discourses the possibility multiple mechanistic pathways possible for an intramolecular dimer system to undergo SEF. In an attempt to experimentally analyze the practical challenges of increasing biradicaloid character of small molecules, a series of dicyanomethylated diketopyrrolopyrrole derivatives and their exciton dynamics was explored. For the most conjugated molecule SEF like features are observed in the fs TA of thin film which needs to be further investigated.
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Tang, Zhi-Hsung, and 湯智翔. "The effect of admantane derivative, 2,2-Bis(4-(4-amino-3-hydroxyphenoxy)phenyl)adamantane (DPA), on the metastasis of HCT116 colorectal cancer cells." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41849352303969793829.
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碩士國立陽明大學
藥理學研究所
100
Colorectal cancer (CRC) is one of the most common cancers in the world. In the statistics of 2009 published by Department of Health, Executive Yuan, R.O.C. (Taiwan) showed that colorectal cancer has taken the first place of rate of increase in all kind of cancers. Liver metastasis is frequently found in CRC patients and the prognosis is the worst, and the usual treatments are surgery and/or chemotherapies. Surgery is the main treatment of CRC. Chemotherapies are used for the adjuvant treatment of inoperable patients with excision of the lesion and reduce the relapse rate. However, some patients have severe side effects such as nausea, vomiting, decreased immune function after received 5-FU-based chemotherapies, and the choice of drugs for chemotherapies still has a few. Hence, finding a new chemotherapeutic drug with fewer side effects is urgently needed. Adamantane is a kind of compound found in the petroleum. Its related derivatives have been developed in many clinical uses, such as antiviral, neuroprotective, anti-inflammatory, anti-microbial, anti-HIV activities. For anti-cancer activities investigation, the derivativesof adamantine can result in cell apoptosis and growth inhibition to breast cancer, ovarian cancer, and colorectal cancer. Our laboratory have reported the anti-colorectal cancer activity of the rest of compounds: 1,6-Bis[4- (4-amino-3-hydroxyphenoxy)phenyl]diamantine (DPD), N-1- (3,5-dimethyladamantyl)maleimide (DMAMI), and 2,2-Bis(4-(4-amino- 3-hydroxyphenoxy)phenyl)adamantane (DPA). About the previous results of 2,2-Bis(4- (4-amino-3-hydroxyphenoxy)phenyl)adamantine (DPA), it is found to have growth inhibition ability in previous studies. DPA also induces CRC cell cycle arrest in G0/G1 phase, and elevate negative cell cycle regulatory proteins (p21, p27) expression. In addition, it can promote differentiation of CRC cells and increase intercellular adhesion with no acute toxicity in animal model. Furthermore, DPA can be combined with CPT-11 and increase CRT-11 anti-cancer activity. The aim of this study was to investigate whether DPA could inhibit metastasis of CRC cells. SRB assay results showed that DPA time-dependently inhibited the growth of HCT116 cells. In wound healing assay, the inhibition of HCT116 cells migration was observed. Furthermore, 2 to 4 μM DPA treatment for 48 hours also inhibited the migration HCT116 cells in transwell assay. The animal liver metastasis model showed that tumor generation of SCID mice under 40mg/kg DPA twice a week treatment for 4 weeks is less than mice given only once DPA treatment. Besides, preliminary findings showed that DPA could suppress mTOR expression after 48 hours 4 μM DPA treatment, then decrease downstream metastasis related protein, Twist expression, and finally raise E-cadherin expression. In conclusion, the potential of inhibition of CRC metastasis through mTOR signaling pathway by DPA can be confirmed.
Book chapters on the topic "Phenyl-derivative"
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Brea, O., I. Alkorta, I. Corral, O. Mó, M. Yáñez, and J. Elguero. "Intramolecular Beryllium Bonds. Further Insights into Resonance Assistance Phenomena." In Intermolecular Interactions in Crystals: Fundamentals of Crystal Engineering, 530–58. The Royal Society of Chemistry, 2017. http://dx.doi.org/10.1039/bk9781782621737-00530.
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Beryllium bonds are acid–base closed-shell interactions in which the Lewis acid is a BeXY derivative. These molecular linkers share common characteristics with hydrogen bonds (HBs), though they produce strong distortions of the electron density distribution of the Lewis base participating in the interaction. The characteristics of intramolecular beryllium bonds (IMBeBs) in which a basic site interacts with a BeH group of the same molecule have been analyzed through DFT and high-level ab initio calculations. IMBeBs are stronger than intramolecular HBs in analogous environments, and also stronger in unsaturated compounds. However, this larger strength does not arise from resonance assisted phenomena, but from a larger basicity of the basic site and a larger Lewis acidity of the BeH group when belonging to an unsaturated moiety. Hence, it is the high strength of the beryllium bond that triggers an enhancement of the resonance within the system, and not the resonance stabilization of the system that renders the IMBeB stronger. The dimerization of malonaldehyde-like structures is also analyzed. These dimers are stabilized by Be–H–Be bonds similar to the ones responsible for the stability of diborane. The substitution of H by halogen atoms, alkyl and phenyl groups in these bridges is also investigated.
Conference papers on the topic "Phenyl-derivative"
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Yanagisawa, M., M. Kunimoto, and T. Homma. "Depth Profile Analysis of Chemical Structures Around Lubricant/Overcoat Interface Using Plasmonic Sensor." In ASME 2016 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/isps2016-9514.
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A chemical depth profile in lubricant films, carbon films, and their interfaces is an informative parameter for hard disk media because molecular features of lubricants bonded to a surface of carbon overcoats (COCs), which usually consist of a nitrogen doped layer, are important to achieve high tribological performance. However, it was difficult to analyze their interfaces with high depth resolution because thickness of lubricant films and COC films are so thin, i.e. 1.5nm and 2nm, respectively. We have developed new method using plasmonic sensors, which has measurement capability for chemical structures with depth resolution of 0.1nm by surface-enhanced Raman spectroscopy (SERS). We examined the lubricant film composed of perfluorinated polyether (PFPE) with phosphazene derivative (A2OH) on a diamond-like carbon (DLC) film. The result shows that the functional group is adsorbed on the DLC surface, where lower shift in the wave number of phenyl group is observed. The depth profile of the intensity ratio of D-peak to G-peak shows the maximum at around the surface of the DLC film. A variety of organic components in the DLC films, fabricated by a chemical vapor deposition (CVD), were observed in it. Besides, the depth profiles shows that organic materials, involving methyl, ethyl, or ethylene groups, Co(OH)x exist in the film.