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In the title co-crystal, [Sn4(CH3)8Cl4O2]·2[Sn(CH3)2Cl(C4H8NS2)], all the SnIV atoms are in distorted trigonal–bipyramidal environments. In the mononuclear species, the carbodithio­ate ligand is unsymmetrically coordinated to the SnIV atom, with Sn—S distances of 2.6722 (12) and 2.4706 (11) Å. All atoms with the exception of the methyl groups and one of the pyrrolidine ring CH2 groups lie on a crystallographic mirror plane. The pyrrolidine ring exhibits an envelope conformation; the C atom at the flap is disordered above and below the plane of symmetry with fixed occupation factors of 0.50. The centrosymmetric dimer species consists of a central Sn2O2 unit with two adjacent Sn2OCl four-membered rings.
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