Citation:
FENG Yun-Long, LIU Shi-Xiong. Spectral Property and Crystal Structure of Cobalt(Ⅲ) Complexes of Isonitrosoacetylacetone-N-arylimine[J]. Chinese Journal of Applied Chemistry,
;2002, 19(9): 842-846.
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Two cobalt(Ⅲ) complexes of isonitrosoacetylacetone and its Schiff base isonitroso acetylacetone-N-arylimine, CoCl(p-ClC6H4-IAI)(IAI=isonitrosoacetylacetoneimino)(IAA)(p-ClC6H4NH2)(1) and CoCl(o-BrC6H4-IAI)(IAA)(o-BrC6H4NH2)(2), were prepared. Their spectral properties and structures were characterized by IR, Raman spectroscopy and XRD. The complex 1 crystallizes in monoclinic, with space group P21/n, a=1.6111(3) nm, b=1.3456(3) nm, c=2.3953(5) nm, U=91.42(3)°, Z=8, F(000)=2.400, _=10.10 cm-1. The final R=0.0731 for 5120 observed reflections with I≥2e(I). The complex 2 crystallizes in triclinic, with space group P1, a=0.9511(2) nm, b=0.953 8(2) nm, c=1.5687(3) nm, T=77.45(3)°, U=86.08(3)°, V=64.71(3)°, Z=2, F(000)=672, _=40.14 cm-1. The final R1 is 0.060.1 for 4207 observed reflections with I≥2σ(I). The geometry around the Co(Ⅲ) ions in both complexes has a distorted octahedral ClN4O coordination composed of imino-nitrogen and oximo-nitrogen from the Schiff base ligand aryl-IAI-, keto-oxygen and oximo-nitrogen from the ligand IAI-, amino-nitrogen from substituted aniline and chlorine anion.
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