Preparation and characterization of tris(trimethylsilyl)silyl and tris(trimethylsilyl)germyl derivatives of zirconium and hafnium. X-ray crystal structures of (.eta.5-C5Me5)Cl2HfSi(SiMe3)3 and (.eta.5-C5Me5)Cl2HfGe(SiMe3)3
The synthesis and X-ray characterization of two N,N′-dimethylvioluric acid (1) derivatives of formula [Cd(DMV)2(benzim)2] (2) (benzim = benzimidazole) and [Cd(H2O)4(py)2](DMV)2 (3) (py = pyridine) are reported.