Copper(II) and zinc(II) complexes with 2-benzoylpyridine-methyl hydrazone

2-Benzoylpyridine-methyl hydrazone (HBzMe) has been obtained as well as its copper(II) [Cu(HBzMe)Cl 2] ( 1) and zinc(II) [Zn(HBzMe)Cl 2] ( 2) complexes. Upon re-crystallization in 1 – 9 DMSO:acetone conversion of 1 into dimeric [Cu(BzMe)Cl] 2 ( 1a) occurred. The crystal structures of HBzMe, 1, 1a, a...

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Published inJournal of molecular structure Vol. 920; no. 1; pp. 97 - 102
Main Authors Recio Despaigne, Angel A., Da Silva, Jeferson G., Do Carmo, Ana Cerúlia M., Piro, Oscar E., Castellano, Eduardo E., Beraldo, Heloisa
Format Journal Article
LanguageEnglish
Published Elsevier B.V 28.02.2009
Subjects
Asymmetry
Bonding
Chlorides
Conversion
Copper
Crystal structure
Crystal structures
Hydrazones
Ligands
Metal complexes
Spectral studies
Hydrazones
Crystal structures
Spectral studies
Metal complexes
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Summary:2-Benzoylpyridine-methyl hydrazone (HBzMe) has been obtained as well as its copper(II) [Cu(HBzMe)Cl 2] ( 1) and zinc(II) [Zn(HBzMe)Cl 2] ( 2) complexes. Upon re-crystallization in 1 – 9 DMSO:acetone conversion of 1 into dimeric [Cu(BzMe)Cl] 2 ( 1a) occurred. The crystal structures of HBzMe, 1, 1a, and 2 were determined. HBzMe adopts the ZE conformation in the solid. In all complexes the hydrazone adopts the E configuration to attach to the metal through the N py N2 O chelating system. In 1 and 2 a neutral hydrazone coordinates to the metal center while in 1a deprotonation occurs with coordination of an anionic ligand. 1a presents a dimeric structure, having two copper(II) ions per asymmetric unit. Two chlorides are also present in the copper coordination sphere, which act as bridging ligands and connect the copper centers to each other.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2008.10.025