n-Butyl-dichlorido{4-cyclo-hexyl-1-[phenyl(2-pyridyl-κN)methyl-ene]-thiosemicarbazidato-κN,S}tin(IV) chloro-form monosolvate.

The monodeprotonated Schiff base ligand in the title com-pound, [Sn(C(4)H(9))(C(19)H(21)N(4)S)Cl(2)]·CHCl(3), N,N',S-chelates to the Sn atom, which is six-coordinated in an octa-hedral environment. The three coordinating atoms along with the butyl C atom comprise a square plane, above and below which are positioned the Cl atoms. The amino group is a hydrogen-bond donor to a Cl atom of an adjacent mol-ecule, the hydrogen bond giving rise to a helical chain propagating in [010]. The Cl and H atoms of the chloro-form mol-ecule are disordered over two positions in an 0.67:0.33 ratio.