Syntheses, Structures, and Infrared Spectra of the Hexa(cyanido) Complexes of Silicon, Germanium, and Tin.

The rare octahedral EC coordination skeleton type is unknown for complexes with coordination centers consisting of group 14 elements. Here, the first examples of such EC species, the hexacoordinate homoleptic cyanido complexes E(CN), E = Si, Ge, Sn, have been synthesized from element halides SiCl, GeCl and SnF and isolated as salts with PPN counterions (PPN = (PhP)N) on a scale of 0.2-1 g.