Preparation, Structure, and Thermal Decomposition of Co(II) Complexeswith 2,3- and 2,5-Dichlorobenzoic Acid and Imidazole |
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| Authors: | Wies?awa Wo?odkiewicz Tadeusz G?owiak |
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| Institution: | (1) Faculty of Chemistry, Maria Curie-Skłodowska University, PL-20031 Lublin, Poland, PL;(2) Faculty of Chemistry, University of Wrocław, PL-50383 Wrocław, Poland, PL |
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| Abstract: | Summary. The reaction products of Co(II)-2,3- and -2,5-dichlorobenzoate with imidazole (1, 2; CoL
2⋯2imdċ2H2O, L=C7H3Cl2O, imd=imidazole) were characterized by their spectroscopic and thermochemical properties. The compounds crystallize in the monoclonic
system with space group = P21/c, a=13.848(3), b=12.841(3) ?, c= 7.064(2) ?, β=98.12 °, V=1243.5(4) ?3, Z=2 for 1 and space group =P21/n, a=13.293(3), b= 6.964(2), c=13.800(3) ?, β=108.92(3) °, V=1208.6(4) ?3, Z=2 for 2. The complexes lose their crystal water in one step at 333 K and subsequently decompose to CoO with intermediate formation
of Co3O4.
Received August 9, 1999. Accepted (revised) February 11, 2000 |
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| Keywords: | , ,Cobalt, Dichlorobenzoic acid, Complex, X-Ray analysis, Thermal analysis, |
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