Tris(2-methyl-2-phenylpropyl)stannane derivatives, (Neo)3SnX, revisited. Comparison of crystal structures of (Neo)3SnX (X=Cl, Br, I, N3, NCS and OAc)

摘要: Abstract The 1H, 13C and 119Sn NMR far-IR spectra of tris(neophyl)stannanes, (PhCMe2CH2)3SnX, (Neo)3SnX, [1: X=F, Cl, Br, I, N3, NCS, OSn(Neo)3 OAc], the crystal structures 1 (X=Br, NCS OAc) are reported. compounds N3 NCS) previously reported (X=Cl) all contain four-coordinate tin centers, with distorted tetrahedral geometries in solid state. In contrast, (X=OAc) is five-coordinate due to acetate group acting as a chelating ligand. With exception (X=Cl), have entirely molecular only van der Waals forces controlling packing molecules. molecules threefold axial symmetry, packed head tail rows weak CH⋯Cl intermolecular contacts.