Me2Si(C5Me4)2Cr: Synthesis and Crystal Structure of a Ligand-Free ansa-Chromocene

Me2Si(C5Me4)2Cr: Synthesis and Crystal Structure of a Ligand-Free ansa-Chromocene
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Me2Si(C5Me4)2Cr:无配体柄型二茂铬的合成和晶体结构

DOI:
10.1021/om049901x
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
H. Brintzinger
H. Brintzinger
中科院分区:
--
文献类型:
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作者:
F. Schaper;Olaf Wrobel;Ralf Schwörer;H. Brintzinger

文献摘要

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Me2Si(C5Me4)2Cr 是第一个不含铬附加配体的柄型二茂铬化合物,是在 2,6-二甲苯基异氰化物存在下由 Me2Si(C5Me4)2Li2 和 CrCl2(THF)x 合成的。确定了复合物的晶体结构。该络合物是顺磁性的,不配位膦、亚磷酸酯、腈、胺或乙炔,但它很容易与2,6-二甲苯基异氰化物反应生成单异氰化物和二异氰化物络合物。
Me2Si(C5Me4)2Cr, the first example of an ansa-chromocene containing no additional ligands at chromium, was synthesized from Me2Si(C5Me4)2Li2 and CrCl2(THF)x in the presence of 2,6-xylyl isocyanide. The crystal structure of the complex was determined. The complex is paramagnetic and does not coordinate phosphines, phosphites, nitriles, amines, or acetylenes, but it reacts readily with 2,6-xylyl isocyanide to give mono- and diisocyanide complexes.