Cobalt(<scp>II</scp>) triazene 1-oxide bis(chelates). A case of planar (low spin)–tetrahedral (high spin) isomerism
作者:Juliusz A. Wolny、Mikołaj F. Rudolf、Zbigniew Ciunik、Kazimierz Gatner、Stanisław Wołowiec
DOI:10.1039/dt9930001611
日期:——
and low-spin cobalt(II) trizene 1-oxide bis(chelates) have been isolated. The low-spin complexes possess square-planar structure whilst the high-spin complexes are tetrahedral. The molecular structure of high-spin [Co(OMeN3C6H4Me-4)2] has been determined: triclinic, space group P, Z= 2, a= 7.970(5), b= 10.174(5), c= 11.676(5)Å, α= 87.18(4), β= 74.31(4) and γ= 74.06(4)°. For some complexes the isolation
已分离出高自旋和低自旋钴(II)三烯一氧化物双(螯合物)。低自旋复合物具有正方形平面结构,而高自旋复合物为四面体。确定了高自旋[Co(OMeN 3 C 6 H 4 Me-4)2 ]的分子结构:三斜晶,空间群P,Z = 2,a = 7.970(5),b = 10.174(5),C= 11.676(5)°,α= 87.18(4),β= 74.31(4)和γ= 74.06(4)°。对于某些配合物,根据合成条件,可以分离平面异构体(低旋)和四面体异构体(高自旋)。方形晶体[Ni(OMeN 3 C 6 H 4 -Me-4)2 ]的晶体结构与[Co(OMeN 3 C 6 H 4 Me-4)2的低旋异构体同构,已确定:三斜度,空间群P,Z = 1,a = 7.495(2),b = 7.694(5),c= 8.612(3)Å,α= 64.64(5),β= 87.84(2),γ= 78.64(3)°。配合物