Magnetic susceptibility and ESR studies of three complexes of chromium(III) and L-histidine. Ferromagnetic interactions in the dimeric complex [Cr(L-histidine)2(OH)]2
作者:Etim E. Eduok、John W. Owens、Charles J. O'Connor
DOI:10.1016/s0277-5387(00)84705-1
日期:1984.1
Three complexes of chromium(III) and histidine were investigated by variable temperature magnetic susceptibility and ESR. Two monomeric stereosoimers of Cr(L-histidine)2(NO3) were studied; the trans(imidazole) and trans(carboxylate)isomers exhibited Curie-Weiss behaviour in the 6–300 K temperature region. The magnetic susceptibility of the related binuclear complex, [Cr(L-histidine)2(OH)]2, showed
通过变温磁化率和ESR研究了铬(III)和组氨酸的三种配合物。研究了Cr(L-组氨酸)2(NO 3)的两种单体立体异构体。的反式(咪唑)和反式(羧酸酯)异构体显示出在6-300 K温度区域居里-外斯行为。相关的双核络合物[Cr(L-组氨酸)2(OH)] 2的磁化率在低温(J / k = +0.15 K)下显示出铁磁行为,从而为提出的羟基桥接结构提供了有力的支持。