Nitrogen donor chelates of bivalent tin chloride. Part II. The crystal structures of SnCl2·(2,2′-bipyridyl) and SnCl2·(1,10-phenanthroline)

The crystal and molecular structures of dichloro- (2,2′-bipyridyl)tin(II), dichloro(1,10-phenanthroline)tin(II) and dichlorobis(8-hydroxyquinolinato)tin(IV) have been determined by means of single crystal X-ray diffraction. The coordination geometry of the two tin(II) complexes is considerably distorted by the presence of a stereochemically active pair of electrons, in contrast to the regular six-coordinate octahedral tin(IV) complex.