Salts of the cobalt(I) complexes [Co(CO)5]+ and[Co(CO)2(NO)2]+ and the Lewis acid-base adduct [CO2(CO)7CO-B(CF3)3]

被引:24
作者
Bernhardt, Eduard
Finze, Maik
Willner, Helge
Lehmann, Christian W.
Aubke, Friedhelm
机构
[1] Berg Univ Wuppertal, FB C Anorgan Chem, D-42119 Wuppertal, Germany
[2] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany
[3] Univ British Columbia, Dept Chem, Vancouver, BC 6VT 1Z1, Canada
关键词
carbonyl ligands; cobalt; density functional calculations; nitrosyl ligands; vibrational spectroscopy;
D O I
10.1002/chem.200600210
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The reaction of [Co-2(CO)(8)] with (CF3)(3)BCO in hexane leads to the Lewis acid-base adduct [CO2(CO)(7)COB(CF3)(3)] in high yield. When the reaction is performed in anhydrous HF solution [Co(CO)(5)][(CF3)(3)BF] is isolated. The product contains the first example of a homoleptic metal pentacarbonyl cation with 18 valence electrons and a trigonal-bipyramidal structure. Treatment of [Co-2(CO)(8)] or [Co(CO)(3)NO] with NO+ salts of weakly coordinating anions results in mixed crystals containing the [Co(CO)(5)](+)/[Co(CO)(2)(NO)(2)](+) ions or pure novel [Co(CO)(2)(NO)(2)](+) salts, respectively. This is a promising route to other new metal carbonyl nitrosyl cations or even homoleptic metal nitrosyl cations. All compounds were characterized by vibrational spectroscopy and by single-crystal X-ray diffraction.
引用
收藏
页码:8276 / 8283
页数:8
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