Synthesis, spectroscopic and structural aspects of some tetraorganodistannoxanes with internally functionalized oxime. 2. Crystal and molecular structure of [{Me2Sn(ONC(Me)C5H4N)}2O}]2·2[2-NC5H4(Me)CNOH]

The title compound [{Me2Sn(ONC(Me)C5H4N)}2O}]2·2[2-NC5H4(Me)CNOH] was obtained during the reaction of Me2SnCl2 with the sodium salt of the ligand in 1:2 molar ratio in a refluxing methanol–benzene mixture. X-ray diffraction analysis of the compound reveals that it is the first tetraorganodistannoxane structural motif in which two molecules of free oxime are connected to the stannoxane framework and the two SnO distances of the four-membered planar Sn2O2 ring are identical.