Molecular structure of 1,2;3,4,di-μ,-nitrobenzoato-OO'-1,3-bis(o, m-, or p-nitrobenzoato)-l,2,4;2,3,4-di-μ3-oxotetrakis [di-n-butyltin(IV)] compounds

Infrared, Mössbauer and multinuclei (1H, 13C, 119Sn) NMR spectral data for the title compounds and single crystal X-ray data for the ortho isomer only reveal that these compounds contain two bridging and two non-bridging (monodentate) nitro-benzoato groups. These data further confirm the existence of two six-coordinate endocyclic and two five-coordinate exocyclic tin atoms in these dimers.