An exact coordination mode of 6-thiopurine with an organotin(IV): preparation and crystal structure of triphenyl(6-thiopurinyl)tin(IV)

Triphenyl(6-thiopurinyl)tin has been prepared and its structure reinvestigated by X-ray diffraction. In the structure, a new coordination mode was observed that was different from those reported previously from investigations by infrared and Mossbauer spectroscopy. In the molecule, 6-thiopurine coordinated to tin by the S and N(1) atoms. The discrete molecules were connected to form a zigzag ID network through intermolecular (HN)-N-... hydrogen bonds. The tin environment is pentacoordinated with cis-trigonal bipyramidal geometry. (C) 2004 Published by Elsevier B.V.