%0 Journal Article %1 ISI:000286930000002 %A Keypour, Hassan %A Arzhangi, Parisa %A Rahpeyma, Nasibeh %A Rezaeivala, Majid %A Elerman, Yalcin %A Khavasi, Hamid Reza %C PO BOX 564, 1001 LAUSANNE, SWITZERLAND %D 2011 %I ELSEVIER SCIENCE SA %J INORGANICA CHIMICA ACTA %K Macroacyclic Schiff Tetraaza X-ray base complex; crystal macrocycle} moiety; structure; {Piperazine %N 1 %P 9-14 %R 10.1016/j.ica.2010.11.033 %T Coordination chemistry of two new tetraaza Ni(II) and Cu(II) macrocyclic and two new Co(II) and Zn(II) macroacyclic Schiff base complexes containing piperazine moiety: X-ray crystal structures of Ni(II) and Zn(II) complexes %V 367 %X A new potentially tetradentate (N(4)) Schiff base ligand (L), 1,9,12,20-tetraazatetracyclo18.2.2.02,7.014,19tetracosa-2(7),3,5,8,1 2,14(19),15,17-octaene containing a piperazine moiety is described. Macrocyclic Schiff base complexes, NiL(ClO(4))(2) (1) and CuL(ClO(4))(2) (2) have been obtained from equimolar amounts of ligand (L) with nickel(II) and copper(II) metal ions. While the equilibrium reaction in the presence of cobalt(II) and zinc(II) metal ions with ligand L in a 1:1 molar ratio yielded the open-chain Schiff base complexes, CoL'(ClO(4))(2) (3) and ZnL'(ClO(4))(2) (4) containing two terminal primary amino groups. The ligand L' is 1,4-bis(2-(2-aminoethyliminomethyl)phenyl)piperazine. The crystal structures of (1) and (4) have been also determined by X-ray diffraction. It was shown that the Ni(II) is coordinated to the ligand L by two nitrogen atoms of piperazine group and two nitrogen atoms of the imine groups, in a slightly distorted square-planar geometry. Also single crystal X-ray analysis of (4) confirmed a distorted octahedral arrangement in the vicinity of Zn atom with N(6) donor set. The spectroscopic characterization of all complexes is consistent with their crystal structures. (C) 2010 Elsevier B.V. All rights reserved.

@article{ISI:000286930000002, abstract = {{A new potentially tetradentate (N(4)) Schiff base ligand (L), 1,9,12,20-tetraazatetracyclo{[}18.2.2.02,7.014,19]tetracosa-2(7),3,5,8,1 2,14(19),15,17-octaene containing a piperazine moiety is described. Macrocyclic Schiff base complexes, {[}NiL](ClO(4))(2) (1) and {[}CuL](ClO(4))(2) (2) have been obtained from equimolar amounts of ligand (L) with nickel(II) and copper(II) metal ions. While the equilibrium reaction in the presence of cobalt(II) and zinc(II) metal ions with ligand L in a 1:1 molar ratio yielded the open-chain Schiff base complexes, {[}CoL'](ClO(4))(2) (3) and {[}ZnL'](ClO(4))(2) (4) containing two terminal primary amino groups. The ligand L' is 1,4-bis(2-(2-aminoethyliminomethyl)phenyl)piperazine. The crystal structures of (1) and (4) have been also determined by X-ray diffraction. It was shown that the Ni(II) is coordinated to the ligand L by two nitrogen atoms of piperazine group and two nitrogen atoms of the imine groups, in a slightly distorted square-planar geometry. Also single crystal X-ray analysis of (4) confirmed a distorted octahedral arrangement in the vicinity of Zn atom with N(6) donor set. The spectroscopic characterization of all complexes is consistent with their crystal structures. (C) 2010 Elsevier B.V. All rights reserved.}}, added-at = {2017-05-10T15:29:29.000+0200}, address = {{PO BOX 564, 1001 LAUSANNE, SWITZERLAND}}, affiliation = {{Keypour, H (Reprint Author), Bu Ali Sina Univ, Fac Chem, Hamadan 65174, Iran. Keypour, Hassan; Arzhangi, Parisa; Rahpeyma, Nasibeh, Bu Ali Sina Univ, Fac Chem, Hamadan 65174, Iran. Rezaeivala, Majid, Hamedan Univ Technol, Dept Chem Engn, Hamadan 65155, Iran. Elerman, Yalcin, Ankara Univ, Fac Engn, Dept Engn Phys, TR-06100 Ankara, Turkey. Khavasi, Hamid Reza, Shahid Beheshti Univ, Dept Chem, Tehran 1983963113, Iran.}}, author = {Keypour, Hassan and Arzhangi, Parisa and Rahpeyma, Nasibeh and Rezaeivala, Majid and Elerman, Yalcin and Khavasi, Hamid Reza}, author-email = {{haskey1@yahoo.com}}, biburl = {https://www.bibsonomy.org/bibtex/2a2c4e6a91f57a0b6eb864914df7e8fee/hkhavasi}, cited-references = {{AIME S, 1995, INORG CHEM, V34, P5825, DOI 10.1021/ic00127a021. ALEXANDER V, 1995, CHEM REV, V95, P273, DOI 10.1021/cr00034a002. BAILEY NA, 1980, INORG CHIM A-ARTICLE, V43, P205, DOI 10.1016/S0020-1693(00)90530-9. Canali L, 1999, CHEM SOC REV, V28, P85, DOI 10.1039/a806483k. Eilmes J, 1999, INORG CHIM ACTA, V290, P14, DOI 10.1016/S0020-1693(99)00090-0. FENTON DE, 1988, CHEM SOC REV, V17, P69, DOI 10.1039/cs9881700069. GEARY WJ, 1971, COORDIN CHEM REV, V7, P81, DOI 10.1016/S0010-8545(00)80009-0. GILL NS, 1961, J INORG NUCL CHEM, V18, P79, DOI 10.1016/0022-1902(61)80372-2. 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Vazquez M, 2002, J CHEM SOC DALTON, P870, DOI 10.1039/b107116p.}}, doc-delivery-number = {{715XX}}, doi = {{10.1016/j.ica.2010.11.033}}, funding-acknowledgement = {{Faculty of Chemistry of Bu-Ali Sina University; National Foundation of elites (BMN); Ministry of Science, Research and Technology of Iran}}, funding-text = {{We are grateful to the Faculty of Chemistry of Bu-Ali Sina University, National Foundation of elites (BMN) and Ministry of Science, Research and Technology of Iran, for financial support.}}, interhash = {02a8b5cfe10f4137327c07190303f89d}, intrahash = {a2c4e6a91f57a0b6eb864914df7e8fee}, issn = {{0020-1693}}, journal = {{INORGANICA CHIMICA ACTA}}, journal-iso = {{Inorg. Chim. Acta}}, keywords = {Macroacyclic Schiff Tetraaza X-ray base complex; crystal macrocycle} moiety; structure; {Piperazine}, keywords-plus = {{METAL-COMPLEXES; LIGANDS; LANTHANIDES; MONONUCLEAR; ACTINIDES; NICKEL}}, language = {{English}}, month = {{FEB 28}}, number = {{1}}, number-of-cited-references = {{32}}, pages = {{9-14}}, publisher = {{ELSEVIER SCIENCE SA}}, research-areas = {{Chemistry}}, times-cited = {{15}}, timestamp = {2017-05-10T15:29:29.000+0200}, title = {{Coordination chemistry of two new tetraaza Ni(II) and Cu(II) macrocyclic and two new Co(II) and Zn(II) macroacyclic Schiff base complexes containing piperazine moiety: X-ray crystal structures of Ni(II) and Zn(II) complexes}}, type = {{Article}}, unique-id = {{ISI:000286930000002}}, usage-count-last-180-days = {{0}}, usage-count-since-2013 = {{8}}, volume = {{367}}, web-of-science-categories = {{Chemistry, Inorganic \& Nuclear}}, year = {{2011}} }