(η5-Cyclopentadienyl)(η4-tetrasila-and η4-trisilagermacyclobutadiene)cobalt : Sandwich Complexes Featuring Heavy Cyclobutadiene Ligands
作者： Kazunori Takanashi , Vladimir Ya. Lee , Masaaki Ichinohe , Akira Sekiguchi
关键词: Crystallography 、 Chemistry 、 Cyclopentadienyl complex 、 Stereochemistry 、 Cobalt 、 Cyclobutadiene 、 Ring (chemistry)
摘要: (η5-Cyclopentadienyl)(η4-tetrasilacyclobutadiene)cobalt{[(η4-R4Si4)CoCp], 2} and (η5-cyclopentadienyl)(η4-trisilagermacyclobutadiene)cobalt {[(η4-R4Si3Ge)CoCp], 4} (R = SiMetBu2) were synthesized by reaction of the dipotassium salts tetrasilacyclobutadiene dianion K+2·[R4Si4]2– (1) trisilagermacyclobutadiene K+2·[R4Si3Ge]2– (3) with [CpCoI2(PPh3)]. Alternatively, 4 was prepared 3 [Cp2Co]+·[PF6]–. X-ray crystallographic analysis 2 confirmed its sandwich-type structure, manifesting a nearly square-planar Si4 ring diagnostic perhaptocoordination both ligands, η4-tetrasilacyclobutadiene η5-cyclopentadienyl, to Co atom. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
sci-hub.se 参考文章(32)
Yoshihiro Kon, Kenkichi Sakamoto, Chizuko Kabuto, Mitsuo Kira, A Cobalt Silacyclobutadiene Complex Organometallics. ,vol. 24, pp. 1407- 1409 ,(2005) , 10.1021/OM0490029
Jeffrey M. Dysard, T. Don Tilley, Tantalum-Mediated Substitution at Germanium: A Germolyl-to-Germole Transformation Leading to η4-C4Me4GeMeCl Complexes Organometallics. ,vol. 19, pp. 4720- 4725 ,(2000) , 10.1021/OM000518B
Peter H. M. Budzelaar, Jeroen J. Engelberts, Joop H. van Lenthe, Trends in Cyclopentadienyl - Main-Group-Metal Bonding Organometallics. ,vol. 22, pp. 1562- 1576 ,(2003) , 10.1021/OM020928V
Yoshiyuki Mizuhata, Takahiro Sasamori, Nobuhiro Takeda, Norihiro Tokitoh, A stable neutral stannaaromatic compound: synthesis, structure and complexation of a kinetically stabilized 2-stannanaphthalene. Journal of the American Chemical Society. ,vol. 128, pp. 1050- 1051 ,(2006) , 10.1021/JA057531D
Vladimir Ya. Lee, Risa Kato, Akira Sekiguchi, Andreas Krapp, Gernot Frenking, Heavy ferrocene: a sandwich complex containing Si and Ge atoms. Journal of the American Chemical Society. ,vol. 129, pp. 10340- 10341 ,(2007) , 10.1021/JA0740162
Vladimir Ya. Lee, Kazunori Takanashi, Tadahiro Matsuno, Masaaki Ichinohe, Akira Sekiguchi, Cyclobutadiene Dianions Consisting of Heavier Group 14 Elements: Synthesis and Characterization Journal of the American Chemical Society. ,vol. 126, pp. 4758- 4759 ,(2004) , 10.1021/JA030662Z
Akihiro Shinohara, Nobuhiro Takeda, Takahiro Sasamori, Takeshi Matsumoto, Norihiro Tokitoh, Synthesis and Properties of η6-Silabenzene−M(CO)3 Complexes (M = Cr, Mo) Organometallics. ,vol. 24, pp. 6141- 6146 ,(2005) , 10.1021/OM0501778
Kazunori Takanashi, Vladimir Ya. Lee, Tadahiro Matsuno, Masaaki Ichinohe, Akira Sekiguchi, Tetrasilacyclobutadiene (tBu2MeSi)4Si4 : A new ligand for transition-metal complexes Journal of the American Chemical Society. ,vol. 127, pp. 5768- 5769 ,(2005) , 10.1021/JA050938Y
Norio Nakata, Nobuhiro Takeda, Norihiro Tokitoh, η6-Germabenzene Complexes of Chromium and Molybdenum Angewandte Chemie International Edition. ,vol. 42, pp. 115- 117 ,(2003) , 10.1002/ANIE.200390038
R. B. King, Organometallic Chemistry of the Transition Metals. XI. Some New Cyclopentadienyl Derivatives of Cobalt and Rhodium Inorganic Chemistry. ,vol. 5, pp. 82- 87 ,(1966) , 10.1021/IC50035A020