Synthesis and characterization of cobalt(II), nickel(II), copper(II) and zinc(II) complexes of 2-nitrobenzoic acid with methyl carbazate as ancillary ligand. Crystal structure of the copper(II) complex

被引：27
|
作者：
Kathiresan, Ayyasami [1 ]
Srinivasan, Krishnan [2 ]
Brinda, Selvaraj [3 ]
Nethaji, Munirathinam [3 ]
Govindarajan, Subbaiah [1 ]
机构：
[1] Bharathiar Univ, Dept Chem, Sch Chem Sci, Coimbatore 641046, Tamil Nadu, India
[2] Thiruvalluvar Univ, Dept Chem, Vellore 632115, Tamil Nadu, India
[3] Indian Inst Sci, Dept Inorgan & Phys Chem, Bangalore 560012, Karnataka, India
来源：
TRANSITION METAL CHEMISTRY | 2012年 / 37卷 / 04期
关键词：
TRANSITION-METAL-COMPLEXES; MAGNETIC-PROPERTIES; THERMAL-ANALYSIS; DERIVATIVES; MANGANESE; HYDRAZINECARBOXYLATE; POLYMORPHISM;
D O I：
10.1007/s11243-012-9601-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Divalent metal complexes of general formula [M(2-nb)(2)(mc)(2)].2(2-nbH), where M = Co(II), Ni(II), Cu(II) or Zn(II), 2-nbH = 2-nitrobenzoic acid and mc = methyl carbazate (NH2NHCOOCH3), have been prepared and characterized by physicochemical and spectroscopic methods. Single-crystal X-ray study of the Cu(II) complex revealed that the molecule is centrosymmetric, with two N,O-chelating mc ligands in equatorial positions and a pair of monodentate 2-nb anions in the axial positions. The lattice 2-nbH molecules help to establish the packing of monomers through hydrogen-bonding interactions. Thermal stability and reactivity of the complexes were studied by TG-DTA. Emission studies show that these complexes are fluorescent.
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页码：393 / 397
页数：5
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