Ligand Bridged Heterodinuclear Transition Metal Complexes – Syntheses, Structures and Electrochemical Investigations
作者:Petra Escarpa Gaede、Christoph van Wüllen
DOI:10.1002/zaac.200500229
日期:2006.3
The syntheses of the homo- and hererobimetallic compounds [Ln1M(η5-C5H4)CMe2(η5-C9H6)2MLn] (2a-5d), [(C9H7)CMe2(η5-C5H4)Fe(η5-C5H4)CMe2(η5-C9H6)2MLn] (6a-c), and [(η5-C5H4)CMe2(η5-C9H6)2MLn]2Fe (7a-b) are reported with 1MLn = Rh(cod) 2, Ir(cod) 3, Mn(CO)34 and FeCp 5, 2MLn = Rh(cod) a, Ir(cod) b, Mn(CO)3c and FeCp d, respectively. Crystal structures of 3a, 3b and 5c are described showing two different
[Ln1M (η5-C5H4) CMe2 (η5-C9H6) 2MLn] (2a-5d), [(C9H7) CMe2 (η5-C5H4) Fe (η5-C5H4) CMe2 (η5- C9H6) 2MLn] (6a-c) 和 [(η5-C5H4) CMe2 (η5-C9H6) 2MLn] 2Fe (7a-b) 与 1MLn = Rh (cod) 2, Ir (cod) 3, Mn ( CO) 34 和 FeCp 5, 2MLn = Rh (cod) a, Ir (cod) b, Mn (CO) 3c 和 FeCp d。描述了 3a、3b 和 5c 的晶体结构,显示了两个旋转异构体形式的两种不同配体构象。根据 DFT 计算,这两种旋转异构体之间的能量差异在气相中微不足道。该物种的旋转障碍已确定为 23 kJ / mol。根据固态中不存在分子间相互作用,从堆积效应推导出对构象异构体之一的偏好。