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Synthesis, Crystal Structure, and Spectrum Properties of Cobalt(II) Complexes Based on Tridentate 1,3‐Bis(benzimidazol‐2‐yl)‐2‐oxopropane Ligand and Derivative
Author(s) -
Wu Huilu,
Yun Ruirui,
Wang Kaitong,
Li Ke,
Huang Xingcai,
Sun Tao
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900298
Subject(s) - cobalt , chemistry , coordination sphere , crystallography , picrate , ligand (biochemistry) , octahedron , crystal structure , derivative (finance) , infrared spectroscopy , stereochemistry , inorganic chemistry , ion , organic chemistry , biochemistry , receptor , financial economics , economics
Two new cobalt(II) complexes [Co(obb) 2 ](pic) 2 · 3(C 2 H 3 N) ( 1 ) and [Co(Etobb) 2 ](pic) 2 · 2DMF ( 2 ) were prepared by the reaction of cobalt(II) picrate with the ligands 1,3‐bis(benzimidazol‐2‐yl)‐2‐oxopropane (obb) and 1,3‐bis(1‐ethylbenzimidazol‐2‐yl)‐2‐oxopropane (Etobb), respectively. Single crystal X‐ray diffraction revealed that [Co(obb) 2 ] 2+ and [Co(Etobb) 2 ] 2+ have a different arrangement. In complex 1 the coordination sphere around cobalt(II) is distorted tetrahedral, whereas in complex 2 the coordination sphere around cobalt(II) is distorted octahedral (where the N4 equatorial plane is formed by four benzimidazoles nitrogen atoms and the axial positions are occupied by two oxygen atoms from the two ligands). The complexes were also identified by IR and UV/Vis spectroscopy.