Condensed tantalaborane clusters: synthesis and structures of [(Cp*Ta)2B5H7{Fe(CO)3}2] and [(Cp*Ta)2B5H9{Fe(CO)3}4 |
| |
Authors: | Bose Shubhankar Kumar Geetharani K Varghese Babu Ghosh Sundargopal |
| |
Institution: | Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India. |
| |
Abstract: | The reaction of (Cp*Ta)(2)B(4)H(9)(μ-BH(4))] (1; Cp* = η(5)-C(5)Me(5)) with Fe(2)(CO)(9)] in hexane yielded (Cp*Ta)(2)B(5)H(7){Fe(CO)(3)}(2)] (2) and (Cp*Ta)(2)B(5)H(9){Fe(CO)(3)}(4)] (3) in moderate yield. Cluster 2 represents the first example of a bicapped pentagonal-bipyramidal metallaborane with a deformed equatorial plane, and 3 can be described as a fused cluster in which two pentagonal-bipyramidal units are fused through a common 3-vertex triangular face. Compounds 2 and 3 have been characterized by mass spectrometry and IR, (1)H, (11)B, and (13)C NMR spectroscopy, and the geometric structures were unequivocally established by crystallographic analysis. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|