Crystal Structure of Tetrafluoro(1,10-phenanthroline-N,N')silicon Acetonitrile Semisolvate

The crystal structure of tetrafluoro(1,10-phenanthroline-N,N')silicon acetonitrile semisolvate, SiF₄(phen)]·1/2CH₃CN (I), was studied by X-ray diffraction analysis. The structure of I is tetragonal (space group I4₁/a; a=9.184(1), c=29.700(5) , Z=8); direct methods, full-matrix least-squares refinement in an anisotropic approximation; R=0.039 for all 1820 independent reflections collected (CAD-4 automatic diffractometer, MoK). The geometrical parameters of the SiF₄(phen)] molecule (bond lengths and angles, etc.) were determined with a high accuracy.