Synthesis and Characterisation of Low‐Coordinate Transition‐Metal Complexes Stabilised by Sterically Demanding Carbazolido Ligands
作者:Andrew E. Ashley、Andrew R. Cowley、Jennifer C. Green、David R. Johnston、David J. Watkin、Deborah L. Kays
DOI:10.1002/ejic.200900170
日期:2009.6
The synthesis and characterisation of the homoleptic transition-metal complexes (1,8-Ph2-3,6-Me2C12H4N)2M (M = Cr, 1; M = Mn, 2; M = Fe, 3; M = Co, 4) are described. Formally two-coordinate, the solid-state structures of 2 and 3 reveal near-linear N–M–N geometries and significant bending of the flanking phenyl groups towards the metal centres. Solid-state magnetic measurements reveal high spin metal
均配过渡金属配合物 (1,8-Ph2-3,6-Me2C12H4N)2M (M = Cr, 1; M = Mn, 2; M = Fe, 3; M = Co, 4) 的合成与表征被描述。形式上的双坐标,2 和 3 的固态结构显示出接近线性的 N-M-N 几何形状和侧翼苯基向金属中心的显着弯曲。固态磁测量显示 1-4 中的高自旋金属中心;模型复合物 M(1,8-Ph2C12H6N)2 (M = Cr–Co) 的计算计算证实了这些双咔唑基化合物中存在高自旋构型,并且这些系统的轨道排序为 δ < π < σ。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)