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Journal articles on the topic 'Cyclen'

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Published: 4 June 2021
Last updated: 3 February 2022

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1

Wang, J., R. G. Harrison, and J. D. Lamb. "Anion Separation and Preconcentration with Cyclen and Cyclen-Resorcinarene Derivatives." Journal of Chromatographic Science 47, no. 7 (August 1, 2009): 510–15. http://dx.doi.org/10.1093/chromsci/47.7.510.

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2

Clarkson, Andrea J., Allan G. Blackman, and Charles R. Clark. "Preparation, structures and reactions of isomeric [Co(cyclen)(O2C2O2)]+ and [Co(cyclen)(O2CCH2CO2)]+ complexes (cyclen = 1,4,7,10-tetraazacyclododecane) †." Journal of the Chemical Society, Dalton Transactions, no. 5 (2001): 758–65. http://dx.doi.org/10.1039/b008350j.

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3

Pariya, Chandi, Ta-Yung Chi, Tarun K. Mishra, and Chung-Sun Chung. "Syntheses and X-ray crystal structures of [Zn(cyclen)–im–Zn(cyclen)](ClO4)3 and [Ni(cyclen)(imH)(ClO4)](ClO4) (cyclen=1,4,7,10-tetraazacyclododecane, im=imidazolate)." Inorganic Chemistry Communications 5, no. 2 (February 2002): 119–23. http://dx.doi.org/10.1016/s1387-7003(01)00359-8.

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4

Hervé, Gwénaëlle, Hélène Bernard, Nathalie Le Bris, Jean-Jacques Yaouanc, Henri Handel, and Loïc Toupet. "A new route to cyclen, cyclam and homocyclen." Tetrahedron Letters 39, no. 38 (September 1998): 6861–64. http://dx.doi.org/10.1016/s0040-4039(98)01497-x.

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5

Li, Na, Christopher English, Ammon Eaton, Austin Gillespie, T. C. Ence, Taylor J. Christensen, Adam Sego, Roger G. Harrison, and John D. Lamb. "Cation separation and preconcentration using columns containing cyclen and cyclen–resorcinarene derivatives." Journal of Chromatography A 1245 (July 2012): 83–89. http://dx.doi.org/10.1016/j.chroma.2012.05.036.

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6

Castillo-Blum, S. E., and M. E. Sosa-Torres. "A new isomer of the cis-[Co(cyclen)Cl2]+ cation (cyclen = 1,4,7,10-tetraazacyclododecane)." Polyhedron 14, no. 2 (January 1995): 223–29. http://dx.doi.org/10.1016/0277-5387(94)00245-a.

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7

Xia, Chuan-Qin, Liang-Bo Zhu, Xing-Yu Tan, Yang Yue, and Xiao-Qi Yu. "Synthesis of adenine-cyclen conjugates." Arkivoc 2005, no. 15 (September 9, 2005): 81–87. http://dx.doi.org/10.3998/ark.5550190.0006.f12.

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8

Lima, Luís M. P., David Esteban-Gómez, Rita Delgado, Carlos Platas-Iglesias, and Raphaël Tripier. "Monopicolinate Cyclen and Cyclam Derivatives for Stable Copper(II) Complexation." Inorganic Chemistry 51, no. 12 (May 31, 2012): 6916–27. http://dx.doi.org/10.1021/ic300784v.

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9

Yang, Wen, Christen M. Giandomenico, Michael Sartori, and Dennis A. Moore. "Facile N-1 protection of cyclam, cyclen and 1,4,7-triazacyclononane." Tetrahedron Letters 44, no. 12 (March 2003): 2481–83. http://dx.doi.org/10.1016/s0040-4039(03)00338-1.

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10

Prokhorov, Anton, Nathalie Le Bris, Hélène Bernard, Géraldine Claudon, and Henri Handel. "Cyclohexanedione Bisaminals as Intermediates for Cyclen, Homocyclen, and Cyclam Synthesis." Synthetic Communications 36, no. 21 (October 1, 2006): 3271–82. http://dx.doi.org/10.1080/00397910600910633.

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11

HERVE, G., H. BERNARD, N. LE BRIS, J. J. YAOUANC, and H. HANDEL. "ChemInform Abstract: A New Route to Cyclen, Cyclam and Homocyclen." ChemInform 29, no. 49 (June 18, 2010): no. http://dx.doi.org/10.1002/chin.199849214.

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12

Ito, Hiroshi, Hiroshi Tsukube, and Satoshi Shinoda. "A chirality rewriting cycle mediated by a dynamic cyclen–calcium complex." Chemical Communications 48, no. 89 (2012): 10954. http://dx.doi.org/10.1039/c2cc35350d.

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13

Lee, Eunji, Yasuhiro Hosoi, Honoka Temma, Huiyeong Ju, Mari Ikeda, Shunsuke Kuwahara, and Yoichi Habata. "Silver ion-induced chiral enhancement by argentivorous molecules." Chemical Communications 56, no. 23 (2020): 3373–76. http://dx.doi.org/10.1039/d0cc00798f.

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Optically active tetra-armed cyclens with an asymmetric chiral centre in the cyclen moiety were synthesized and were shown to enhance chirality and control of enantiomers on complexation with Ag+.
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14

Rahman, Md Shahidur, Hou Qun Yuan, Takanori Kikuchi, Ikuhide Fujisawa, and Katsuyuki Aoki. "Metal ion interactions with nucleobases in the tetradentate 1,4,7,10-tetraazacyclododecane (cyclen)-ligand system: Crystal structures of [Cu(cyclen)(adeninato)]·ClO4·2H2O, [{Cu(cyclen)}2(hypoxanthinato)]·(ClO4)3, [Cu(cyclen)(theophyllinato)]3·(ClO4)3·2H2O, and [Cu(cyclen)(xanthinato)]·(0.7ClO4)·(0.3ClO4)·3H2O·(0.5H2O)3." Journal of Molecular Structure 966, no. 1-3 (March 2010): 92–101. http://dx.doi.org/10.1016/j.molstruc.2009.12.014.

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15

Buckingham, David A., David A. Buckingham, Charles R. Clark, Charles R. Clark, Andrew J. Rogers, Andrew J. Rogers, Jim Simpson, and Jim Simpson. "The Synthesis, Separation and Structures of Three [Co(cyclen)((S)-AlaO)]2+ Isomers. The Alkaline Hydrolysis of [Co(cyclen)((S)-AlaO)]2+." Australian Journal of Chemistry 51, no. 6 (1998): 461. http://dx.doi.org/10.1071/c97140.

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The reaction of [Co(cyclen)(OH2)OH]2+ (cyclen = 1,4,7,10-tetraazacyclododecane) with (S)-alanine at pH 7·2 gives a mixture of three [Co(cyclen)((S)-AlaO)]2+ isomers (1)–(3). These have been isolated by using both cation ion-exchange chromatography (Dowex 50 W×2, HCl eluent) and reversed phase ion-pair chromatography (C18, p-toluenephosphate in MeOH/H2O eluent). By using a combination of 1H n.m.r. techniques (n.O.e. and COSY) for solutions in (CD3)2SO the syn(N),anti(O) (1), syn(O), anti(N) (2) and syn(N), syn(O) (3) configurations have been assigned to these isomers. These have been confirmed by single-crystal X-ray analysis: [Co(cyclen)((S)-AlaO)] I2.H2O, isomer (1), P43212, a = b = 8·55150(10), c 51·8693(11) Å, Z 8, R 0·0343; [Co(cyclen)((S)-AlaO)] (ClO4)2.H2O, isomer (2), P212121, a 8·499(3), b 14·538(5), c 16·592(4) Å, Z 4, R 0·0388; [Co(cyclen)((S/R)-AlaO)] ZnBr4, a 1 : 1 mixture containing both (S)-alanine (isomer (3)) and (R)-alanine, P21/c, a 7·618(2), b 13·806(4), c 19·094(7) Å, Z 4, R 0·0726. In alkaline solution (0·1–1·0 M NaOH, 25·0°C, I = 1·0 M (NaClO4)), equilibration between (1), (2) and (3) is faster than hydrolysis to give cis-[Co(cyclen)(OH)2]++(S)-AlaO-. Time zero spectroscopic observation (300 nm) allowed the equilibrium constant, K, for the reaction [Co(cyclen)((S)-AlaO)]2+ + OH- ↔ [Co(cyclen – H)((S)-AlaO)]+ +H2O to be determined as 1·05 M-1 at 25·0°C and I = 1·0 M. The hydrolysis reaction follows the rate law kobs = kKK1K2[OH-]2/(1+K[OH-]+KK1K2[OH-]2) with k = 1·0 s-1 corresponding to rate-determining loss of (S)-AlaO- from the ring-opened complex, [Co(cyclen – H)((S)-AlaO)OH].
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16

Najafpour, Mohammad Mahdi, Rasoul Safdari, Foad Ebrahimi, Parvin Rafighi, and Robabeh Bagheri. "Water oxidation by a soluble iron(iii)–cyclen complex: new findings." Dalton Transactions 45, no. 6 (2016): 2618–23. http://dx.doi.org/10.1039/c5dt04467g.

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17

Kobelev, Sergei M., Alexei D. Averin, Alexei K. Buryak, Evgenii N. Savelyev, Boris S. Orlinson, Gennadii M. Butov, Ivan A. Novakov, Franck Denat, Roger Guilard, and Irina P. Beletskaya. "Macrobicycles based on cyclen and cyclam containing 1,3-disubstituted adamantane moiety." Arkivoc 2012, no. 7 (September 20, 2012): 196–209. http://dx.doi.org/10.3998/ark.5550190.0013.713.

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18

Morfin, Jean-François, Raphaël Tripier, Michel Le Baccon, and Henri Handel. "Bismuth (III) coordination to cyclen and cyclam bearing four appended groups." Polyhedron 28, no. 17 (November 2009): 3691–98. http://dx.doi.org/10.1016/j.poly.2009.08.003.

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19

Kimura, Eiichi, and Emiko Kikuta. "Macrocyclic Zinc(II) Complexes for Selective Recognition of Nucleobases in Single- and Double-Stranded Polynucleotides." Progress in Reaction Kinetics and Mechanism 25, no. 1 (March 2000): 1–64. http://dx.doi.org/10.3184/007967400103165119.

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The model study of zinc enzyme by Zn2+–cyclen complexes (cyclen = 1, 4, 7, 10-tetraazacyclododecane) disclosed the intrinsic properties of zinc(II) as having strong anion affinities and yet the resulting Zn2+–anion bonds have a labile nature. The basic understanding has evolved into novel selective nucleobase recognition by the Zn2+–cyclen complexes. The Zn2+–aromatic pendant cyclen complexes selectively and effectively bind to thymine T (or uracil U) in single- and double-stranded DNA (or RNA). The Zn2+ complexes work like molecular zippers to break A–T pairs in double-stranded DNA, as proven by various physicochemical and DNA footprinting measurements. Moreover, these Zn2+–complexes affect relevant biochemical and ultimately biological properties such as inhibition of a transcriptional factor and antimicrobial activities.
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20

Hannongbua, Supot V., and Bernd M. Rode. "An Intermolecular Potential Function for Cyclen-Water Derived from Ab-Initio Molecular Orbital Calculations." Zeitschrift für Naturforschung A 40, no. 6 (June 1, 1985): 644–48. http://dx.doi.org/10.1515/zna-1985-0618.

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An interaction pair potential function for 1,4,7,10-tetraaza-cyclododecane (cyclen) and water has been derived from ab-initio molecular orbital computations. The 250 computed points of the energy surface for the water-cyclen interaction have been fitted with an analytical potential of the form where A, B. C, and D are constants, and qi, and qj are the atomic charges of the i-th atom of water and the j-th atom of cyclen at infinite separation.
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21

Alves, Luis G., João F. Portel, Sílvia A. Sousa, Olga Ferreira, Stephanie Almada, Elisabete R. Silva, Ana M. Martins, and Jorge H. Leitão. "Investigations into the Structure/Antibacterial Activity Relationships of Cyclam and Cyclen Derivatives." Antibiotics 8, no. 4 (November 14, 2019): 224. http://dx.doi.org/10.3390/antibiotics8040224.

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A series of cyclam- and cyclen-derived salts are described in the present work; they were designed specifically to gain insights into their structure and antibacterial activity towards Staphylococcus aureus and Escherichia coli, used respectively, as Gram-positive and Gram-negative model organisms. The newly synthesized compounds are monosubstituted and trans-disubstituted tetraazamacrocycles that display benzyl, methylbenzyl, trifluoromethylbenzyl, or trifluoroethylbenzyl substituents appended on the nitrogen atoms of the macrocyclic ring. The results obtained show that the chemical nature, polarity, and substitution patterns of the benzyl groups, as well as the number of pendant arms, are critical parameters for the antibacterial activity of the cyclam-based salts. The most active compounds against both bacterial strains were the trans-disubstituted cyclam salts displaying CF3 groups in the para-position of the aromatic rings of the macrocyclic pendant arms. The analogous cyclen species presents a lower activity, revealing that the size of the macrocyclic backbone is an important requirement for the antibacterial activity of the tetraazamacrocycles. The nature of the anionic counterparts present on the salts was found to play a minor role in the antibacterial activity.
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22

Ruangpornvisuti, Vithaya W., and Bernd M. Rode. "A Monte Carlo Study on a Magnesium Cyclen Complex." Zeitschrift für Naturforschung A 43, no. 8-9 (September 1, 1988): 797–800. http://dx.doi.org/10.1515/zna-1988-8-913.

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AbstractA Monte Carlo simulation has been performed to study the hydration of the magnesium complex of 1,4,7,10-tetraazacyclododecane (cyclen). An intermolecular potential function for magnesium cyclen complex and water, derived from ab initio calculations was used. The first hydration shell results to consist of 18 water molecules.
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23

Bhakhoa, Hanusha, Lydia Rhyman, Edmond P. Lee, Daniel K. W. Mok, Ponnadurai Ramasami, and John M. Dyke. "A study of the Group 1 metal tetra-aza macrocyclic complexes [M(Me4cyclen)(L)]+ using electronic structure calculations." Dalton Transactions 46, no. 44 (2017): 15301–10. http://dx.doi.org/10.1039/c7dt03002a.

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Metal-cyclen complexes have a number of important applications. In this work, the electronic structures and preparative conditions are investigated for some Group 1 metal (M), [M(Me4cyclen)L]+ complexes.
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24

P. Beletskaya, Irina, Roger Guilard, Sergei M. Kobelev, Alexei D. Averin, Alexei K. Buryak, and Franck Denat. "Synthesis of Macrobi- and Macrotricyclic Compounds Comprising Pyrimidyl Substituted Cyclen and Cyclam." HETEROCYCLES 82, no. 2 (2010): 1447. http://dx.doi.org/10.3987/com-10-s(e)98.

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25

Santria, Anas, Akira Fuyuhiro, Takamitsu Fukuda, and Naoto Ishikawa. "Determination of ligand field splitting in lanthanide(iii) monoporphyrinato complexes." Dalton Transactions 48, no. 22 (2019): 7685–92. http://dx.doi.org/10.1039/c9dt00915a.

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The 4f-electronic structures of the ground multiplet states of a series of [Ln(TPP)(cyclen)]Cl (Ln = Tb, Dy, Ho, Er, Tm, and Yb; TPP = 5,10,15,20-tetraphenylporphyrinato; cyclen = 1,4,7,10-tetraazacyclododecane) have been determined using experimental NMR and magnetic susceptibility data.
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26

Stastny, Václav, Pavel Lhoták, Ivan Stibor, and Burkhard König. "Synthesis of calix[4]arene–cyclen conjugates." Tetrahedron 62, no. 24 (June 2006): 5748–55. http://dx.doi.org/10.1016/j.tet.2006.03.083.

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27

Weisman, Gary R., and David P. Reed. "A New Synthesis of Cyclen (1,4,7,10-Tetraazacyclododecane)." Journal of Organic Chemistry 62, no. 13 (June 1997): 4548. http://dx.doi.org/10.1021/jo974002m.

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28

Vovard-Le Bray, Chloé, Fan Jiang, Xiao-Feng Wu, Jean-Baptiste Sortais, and Christophe Darcel. "Cyclen-catalyzed Henry reaction under neutral conditions." Tetrahedron Letters 51, no. 34 (August 2010): 4555–57. http://dx.doi.org/10.1016/j.tetlet.2010.06.106.

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29

Weisman, Gary R., and David P. Reed. "A New Synthesis of Cyclen (1,4,7,10-Tetraazacyclododecane)." Journal of Organic Chemistry 61, no. 15 (January 1996): 5186–87. http://dx.doi.org/10.1021/jo9606665.

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30

Morfin, Jean-François, Raphaël Tripier, Michel Le Baccon, and Henri Handel. "Bismuth(III) complexes with tetra-pyridylmethyl-cyclen." Inorganica Chimica Acta 362, no. 6 (April 2009): 1781–86. http://dx.doi.org/10.1016/j.ica.2008.08.013.

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31

Kimura, Eiichi, Teruhiro Gotoh, Shin Aoki, and Motoo Shiro. "Study of pH-Dependent Zinc(II)−Carboxamide Interactions by Zinc(II)−Carboxamide-Appended Cyclen Complexes (Cyclen = 1,4,7,10-Tetraazacyclododecane)." Inorganic Chemistry 41, no. 12 (June 2002): 3239–48. http://dx.doi.org/10.1021/ic020087k.

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32

Patinec, V., J. J. Yaouanc, H. Handel, J. C. Clément, and H. des Abbayes. "N1,N7-expeditious dialkylation of cyclen (1,4,7,10-tetraazacyclododecane). An astonishing reactivity of cyclen tricarbonyl molybdenum and chromium complexes." Inorganica Chimica Acta 220, no. 1-2 (June 1994): 347–48. http://dx.doi.org/10.1016/0020-1693(94)03865-1.

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33

Hannongbua, Supot V., Sirirat U. Kokpol, and Jumras P. Limtrakul. "An analysis of the pathways for magnesium ion in the field of a macrocyclic ligand." Canadian Journal of Chemistry 67, no. 8 (August 1, 1989): 1298–301. http://dx.doi.org/10.1139/v89-198.

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An abinitio MO-SCF calculations have been performed with a minimal Gaussian lobe basis set for numerous Mg(II) 1,4,7,10-tetraazacyclododecane (cyclen) configurations. Mg(II) shows a strong interaction with all functional groups of cyclen. The strongest interaction occurs when magnesium points to the cavity and perpendicular to the ligand plane. However, in the complex formation processes, the ion does not prefer to move along this direction because of the repulsive interaction with the NH functional groups. The favourable path for entering the cavity of the ligand encloses an angle of 30° with the z axis and lies in the plane between the opposite NH groups. Keywords: cyclen, macrocyclic effect, complex formation, favourable path, abinitio calculations.
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34

Ren, Yan-Wei, Jun Li, Su-Min Zhao, and Feng-Xing Zhang. "Synthesis, Crystal Structures and Thermal Decomposition of Two Novel Supramolecular Complexes [Ni(cyclen)(H2O)2] (tpa) and [Cu(cyclen)H2O](tpa)⋅3H2O (Cyclen = 1,4,7,10− Tetraazacyclododecane, tpa = Dianion of Terephalic Acid)." Structural Chemistry 16, no. 4 (August 2005): 439–44. http://dx.doi.org/10.1007/s11224-005-6353-5.

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35

P. Beletskaya, Irina, Alexei D. Averin, Sergei M. Kobelev, Alexei K. Buryak, Andrei I. Vovk, Valerii P. Kukhar, Franck Denat, and Roger Guilard. "Macrobicyclic and Macrotricyclic Derivatives of N,N’,N’’,N’’’-Tetrasubstituted Cyclen and Cyclam." HETEROCYCLES 90, no. 2 (2015): 989. http://dx.doi.org/10.3987/com-14-s(k)71.

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36

Shionoya, Mitsuhiko, Takuya Ikeda, Eiichi Kimura, and Motoo Shiro. "Novel "Multipoint" Molecular Recognition of Nucleobases by a New Zinc(II) Complex of Acridine-Pendant Cyclen (Cyclen = 1,4,7,10-Tetraazacyclododecane)." Journal of the American Chemical Society 116, no. 9 (May 1994): 3848–59. http://dx.doi.org/10.1021/ja00088a021.

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37

Zhang, Zhihui, Yanchun Lu, and Jianhua Guo. "The effect of organic linkers on the supramolecular structures of two new Ni(II) cyclen complexes (cyclen = 1,4,7,10-tetraazadodecane)." Journal of Chemical Crystallography 36, no. 9 (June 27, 2006): 543–50. http://dx.doi.org/10.1007/s10870-006-9096-2.

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38

M. P. Lima, Luis, and Raphael Tripier. "Cyclen-Based Lanthanide Complexes as Luminescent Anion Receptors." Current Inorganic Chemistrye 1, no. 1 (June 1, 2011): 36–60. http://dx.doi.org/10.2174/1877944111101010036.

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39

Ruangpornvisuti, Vithaya W., Michael M. Probst, and Bernd M. Rode. "The Interaction of Magnesium Cyclen Complex with Water." Zeitschrift für Naturforschung A 42, no. 8 (August 1, 1987): 871–74. http://dx.doi.org/10.1515/zna-1987-0818.

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An intermolecular potential function for the magnesium complex of 1,4,7,10-tetraazacyclododecane (cyclen) and water has been derived from ab initio molecular orbital calculations. The form of this interaction function is obtained by fitting 250 points of the calculated energy surface.
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40

Formanovsky, A. A., and I. V. Mikhura. "One-Stage Monosubstitution in Cyclen - Two Novel Examples." Synthetic Communications 26, no. 8 (April 1996): 1595–603. http://dx.doi.org/10.1080/00397919608003528.

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41

De León-Rodríguez, Luis M., Zoltan Kovacs, Ana Cristina Esqueda-Oliva, and Alma Delia Miranda-Olvera. "Highly regioselective N-trans symmetrical diprotection of cyclen." Tetrahedron Letters 47, no. 39 (September 2006): 6937–40. http://dx.doi.org/10.1016/j.tetlet.2006.07.135.

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42

Wang, Aijian, Wei Zhao, and Xiaoqiang Sun. "Synthesis of Some Novel Pendant-Armed Cyclen Derivatives." Asian Journal of Chemistry 28, no. 3 (2016): 551–54. http://dx.doi.org/10.14233/ajchem.2016.19399.

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43

Ikeda, Mari, Ajay Kumar Sah, Miki Iwase, Rina Murashige, Shunsuke Kuwahara, and Yoichi Habata. "Double-armed and tetra-armed cyclen-based cryptands." Supramolecular Chemistry 29, no. 5 (October 14, 2016): 370–77. http://dx.doi.org/10.1080/10610278.2016.1239829.

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44

Antoni, Per, Michael Malkoch, George Vamvounis, Daniel Nyström, Andreas Nyström, Mikael Lindgren, and Anders Hult. "Europium confined cyclen dendrimers with photophysically active triazoles." Journal of Materials Chemistry 18, no. 22 (2008): 2545. http://dx.doi.org/10.1039/b802197j.

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45

Zhang, Bao-Hua, Lan-xiang Shi, Si-Jie Liu, and Rui-Xia Guo. "N-Arylation of Heterocycles Promoted by Cyclen Derivatives." Journal of Heterocyclic Chemistry 52, no. 4 (June 12, 2014): 1234–39. http://dx.doi.org/10.1002/jhet.2188.

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46

Tsuboyama, S., S. Miki, K. Kobayashi, K. Tsuboyama, and T. Sakurai. "A carbonato(optically active cyclen)cobalt(III) complex." Acta Crystallographica Section C Crystal Structure Communications 45, no. 10 (October 15, 1989): 1621–23. http://dx.doi.org/10.1107/s0108270189007006.

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47

Athey, Phillip S., and Garry E. Kiefer. "A New, Facile Synthesis of 1,4,7,10-Tetraazacyclododecane: Cyclen." Journal of Organic Chemistry 67, no. 12 (June 2002): 4081–85. http://dx.doi.org/10.1021/jo016111d.

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48

Counsell, Andrew J., Angus T. Jones, Matthew H. Todd, and Peter J. Rutledge. "A direct method for the N-tetraalkylation of azamacrocycles." Beilstein Journal of Organic Chemistry 12 (November 18, 2016): 2457–61. http://dx.doi.org/10.3762/bjoc.12.239.

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An efficient protocol for the direct synthesis of N-tetraalkylated derivatives of the azamacrocycles cyclam and cyclen has been developed, using a partially miscible aqueous–organic solvent system with propargyl bromide, benzyl bromide, and related halides. The method works most effectively when the reaction mixture is shaken, not stirred. A crystal structure of the N-tetrapropargyl cyclam derivative 1,4,8,11-tetra(prop-2-yn-1-yl)-1,4,8,11-tetraazacyclotetradecane diperchlorate is reported.
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49

Aoki, Shin, Hiroki Kawatani, Teruhiro Goto, Eiichi Kimura, and Motoo Shiro. "A Double-Functionalized Cyclen with Carbamoyl and Dansyl Groups (Cyclen = 1,4,7,10-Tetraazacyclododecane): A Selective Fluorescent Probe for Y3+and La3+." Journal of the American Chemical Society 123, no. 6 (February 2001): 1123–32. http://dx.doi.org/10.1021/ja0033786.

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50

Sarma, Monima, Tanmay Chatterjee, and Samar K. Das. "A copper–cyclen coordination complex associated with a polyoxometalate anion: Synthesis, crystal structure and electrochemistry of [Cu(cyclen)(MeCN)][W6O19]." Inorganic Chemistry Communications 13, no. 10 (October 2010): 1114–17. http://dx.doi.org/10.1016/j.inoche.2010.06.013.

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