Synthesis, structure, and electronic calculations of group VII substituted pyridazines
作者:C. A. Snyder、N. C. Tice、J. B. Maddox、J. O. E. Young、M. G. Mazzotta、B. D. Garabato、J. W. Evans、L. A. Dopierala、S. A. Shah、Z. A. Claytor、A. C. Smith
DOI:10.1007/s11243-013-9752-2
日期:2013.11
A series of 5,6-fused ring cyclopentadienyl tricarbonyl manganese and rhenium complexes, [M(CO)3η5-1,2-C5H3(1,4-(R)2N2C2}] (2a–3d) were isolated by employing an off-metal ring closure route. Reacting thallium cyclopentadienide (Cp) salts (1a–d) with [MBr(CO)5] (M = Mn, Re) provided pyridazyl complexes (2a–3d) in high yield (75–99 %). Spectroscopic characterization (NMR, IR, MS) confirmed the identity
一系列 5,6-稠环环戊二烯基三羰基锰和铼配合物,[M(CO)3η5-1,2-C5H3(1,4-(R)2N2C2}] (2a–3d)一种非金属闭环路线。将环戊二烯铊 (Cp) 盐 (1a-d) 与 [MBr(CO)5] (M = Mn, Re) 反应以高产率 (75-99 %). 光谱表征 (NMR, IR, MS) 证实了所需有机金属哒嗪的身份。与先前报道的路线相比,所采用的非金属合成途径确实改善了这些配合物的分离。配合物的分子和电子结构2a-3d 及其最佳能量结构已通过量子化学计算表征,计算的振动频率与其实验对应物进行了比较。激发态计算预测主要的低能跃迁涉及配体到金属的电荷转移。