作者:Adelaide Carvalho、Ângela Domingos、P. Gaspar、Noémia Marques、A.Pires de Matos、Isabel Santos
DOI:10.1016/s0277-5387(00)83141-1
日期:1992.1
trigonal prism is capped by a bridging BH … M three centre bond, leading to compounds where the metal centres are formally nine-coordinate. The synthesis and characterization of the related UIV derivatives UCl2[H2B(3,5-Me2Pz)2]2 and U(OBut)2[H2B(3,5-Me2Pz)2]2 are also reported. The crystal and molecular structure of UCl[H(μ-H)B(3,5-Me2Pz)2[H(μ-O)B(3,5-Me2Pz)2]2}2, a dimeric complex formed during the
U,Ce,Sm和Yb的三价氯化物在THF中与KH 2 B(3,5-Me 2 Pz)2容易反应,生成配合物M [H(μ-H)B(3,5-Me 2 Pz) )2 ] 3。U [H(μ-H)B(3,5-Me 2 Pz)2 ] 3和Sm [H(μ-H)B(3,5-Me 2 Pz)2 ] 3的晶体和分子结构已经确定。该化合物是同构的,具有双螯合配体的六个氮供体原子,排列成三角棱柱形。三角棱镜的三个矩形面中的每一个均由桥接的BH…M三个中心键覆盖,从而导致化合物的金属中心正式为九坐标。相关的U IV衍生物UCl 2 [H 2 B(3,5-Me 2 Pz)2 ] 2和U(OBu t)2 [H 2 B(3,5-Me 2 Pz)2 ]的合成与表征2个也有报道。UCL [H(μ-H)B(3,5-ME的晶体和分子结构2 PZ)2 [H(μ-O)B(3,5-ME 2 PZ)2 ] 2 } 2,一个还介绍了在UCl