Crystal and molecular structures of several tetrakis (nitrile)copper(I) complexes

Author： Knaust Jacqueline M.   Knight Douglas A.   Keller Steven W.  

Publisher： Springer Publishing Company

ISSN： 1074-1542

Source： Journal of Chemical Crystallography, Vol.33, Iss.11, 2003-11, pp. : 813-823

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Abstract

The crystal structures of several [Cu(RCN)4]X salts (R = Me, X = SO3CF3−; R = Ph, X = BF4−, ClO4−, and PF6−) were determined using single crystal X-ray diffraction. All of the compounds contain distorted tetrahedral Cu(I) centers and noncoordinating anions, with the acetonitrile and benzonitrile structures containing three and one unique CuL4+ complex in their respective asymmetric units. One important distortion is observed in the benzonitrile-Cu bonds, which are bent up to 23° away from linearity. The result is a flattened complex that maximizes the π–π tacking of the aromatic rings and is the dominant packing interactions between the complexes.

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