Synthesis and crystal structure of complex (n-Bu)2Sn(C 10H8N2O4)(C2H 5OH)

A novel six-coordinate complex (n-Bu)2Sn(C10H 8N2O4)(C2H5OH) (C 10H8N2O4 2- is the negative ion of 2-oxo-propionic acid salicyloyl hydrazone) has been synthesized by the reaction of (n-Bu)2SnO with 2-oxo-propionic acid salicyloyl hydrazone (molar ratio 1:1, metal:ligand) in benzene-ethanol (V/V, 3/1), and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to a tetragonal system with space group I41/a, a = 2.5113(7), b = 2.5113(7), c = 1.5062(6) nm, V = 9.499(5) nm3, Z = 16, D c = 1.396 g/cm3, μ(MoKα) = 1.105 mm-1, F(000) = 4096, R = 0.0349 and wR = 0.0793 for 2499 observed reflections (I > 2σ(I)) out of 4039 unique ones. In the crystal structure, the tin atoms are rendered in a distorted six-coordinate octahedral geometry, with one nitrogen N(1) and three oxygen atoms (O(1), O(3) and O(5)) forming the equatorial plane and C(11)-Sn(1)-C(15) being the axis. The structure of the title complex can also be described as a dimer mode through intermolecular Sn⋯O and weak hydrogen-bonding interactions.