Bimetallic Nickel鈥揅obalt Hexacarbido Carbonyl Clusters [H6鈥?i>nNi22Co6C6(CO)36]n鈭?/sup> (n = 3鈥?) Possessing Polyhydride N

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• 作者：Iacopo Ciabatti ; Cristina Femoni ; Maria Carmela Iapalucci ; Giuliano Longoni ; Stefano Zacchini
• 刊名：Organometallics
• 出版年：2012
• 出版时间：June 25, 2012
• 年：2012
• 卷：31
• 期：12
• 页码：4593-4600
• 全文大小：343K
• 年卷期：v.31,no.12(June 25, 2012)
• ISSN：1520-6041

文摘

The reaction of [Ni₁₀C₂(CO)₁₆]^{2鈥?/sup> with Co₃(渭₃-CCl)(CO)₉ results in the new bimetallic Ni鈥揅o hexacarbido carbonyl clusters [H_6鈥?i>nNi₂₂Co₆C₆(CO)₃₆]n鈭?/sup> (n = 3鈥?), which possess polyhydride nature and can be interconverted by means of acid鈥揵ase reactions. The tetra-anion [H₂Ni₂₂Co₆C₆(CO)₃₆]4鈥?/sup> and the hexa-anion [Ni₂₂Co₆C₆(CO)₃₆]6鈥?/sup> have been isolated in a crystalline state and structurally characterized via X-ray crystallography. The six carbide atoms are lodged into Ni₇CoC square antiprismatic cages. Addition of strong bases to [Ni₂₂Co₆C₆(CO)₃₆]6鈥?/sup> affords mixtures of the monoacetylides [Ni₉CoC₂(CO)₁₆]3鈥?/sup> and [Ni₉CoC₂(CO)₁₅]3鈥?/sup>, which have been cocrystallized as [NEt₄]₃[Ni₉CoC₂(CO)_16鈥?i>x] (x = 0.58鈥?.84) salts, displaying tightly bonded interstitial C₂ units.}