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The SnIV atom in the title compound, [Sn(CH3)2(NCS)2(C12H8N2)], is located on a twofold rotation axis in a distorted octa­hedral enviroment. The methyl groups are trans to each other [C—Sn—C = 175.7 (3)°], whereas the thio­cyanate groups are cis to each other.

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The tetra­nuclear title compound, [Sn4(CH3)8(C2H5O)2O2(C3H4N3S)2], lies about a center of inversion; the mol­ecule features a three-rung-staircase Sn4O4 core in which two SnIV atoms are bridged by the 4-methyl-5-sulfanyl­idene-4,5-dihydro-1H-1,2,4-triazol-1-ide group. The negatively charged N atom of the group binds to the terminal SnIV atom at a shorter distance [Sn—N = 2.240 (3) Å] compared with the neutral N atom that binds to the central SnIV atom [Sn← N = 2.641 (3) Å]. The terminal SnIV atom is five-coordinate in a cis-C2SnNO2 trigonal–bipyramidal geometry [C—Sn—C = 127.5 (2)°], whereas the central SnIV atom is six-coordinate in a C2SnNO3 skew-trazepoidal bipyramidal geometry [C—Sn—C = 145.0 (2)°].

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The tetra­nuclear title compound, [Sn4(CH3)8(C3H7O)2O2(C3H4N3S)2], lies about a center of inversion; the mol­ecule features a three-rung-staircase Sn4O4 core in which two SnIV atoms are bridged by the 4-methyl-5-sulfanyl­idene-4,5-dihydro-1H-1,2,4-triazol-1-ide group. The negatively charged N atom of the group binds to the terminal SnIV atom at a shorter distance [Sn—N = 2.236 (2) Å] compared with the neutral N atom that binds to the central SnIV atom [Sn← N = 2.805 (2) Å]. The terminal SnIV atom is five-coordinate in a cis-C2SnNO2 trigonal–bipyramidal geometry [C—Sn—C = 136.4 (1)°], whereas the central SnIV atom is six-coordinate in a C2SnNO3 skew-trazepoidal bipyramidal geometry [C—Sn—C = 145.4 (1)°]. The C atoms of the isopropoxy group are disordered over two positions in a 0.591 (7):0.409 (7) ratio.

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In the title compound, [Sn2(CH3)6(NCS)2(C24H22N4)], the 1,2,3,4-tetra­kis­(pyridin-4-yl)butane ligand uses the pyridine N atoms at the ends of the butyl chain to coordinate to two trimethylthiocyanatotin(IV) units, forming a dinuclear structure. The SnIV atom in the mol­ecule shows a distorted trans-trigonal–bipyramidal coordination with the methyl groups in equatorial positions. The mol­ecule lies on a center of inversion, with the mid-point of the butyl chain coinciding with this symmetry element. In the crystal, weak C—H...π inter­actions occur between pyridine rings of adjacent mol­ecules.

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The SnIV cation in the title compound, [Sn(CH3)2(C10H8NO)2], is N,O-chelated by two 2-methyl­quinolin-8-olate anions and coordinated by two methyl groups in a skew-trapezoidal bipyramidal geometry. In the mol­ecule, the two quinoline ring systems are twisted to one another at 10.91 (18)°. The dimethyl­tin skeleton [C—Sn—C = 149.6 (2)°] is bent over the longer edge of the trapezoid that is defined by the four chelating atoms. Weak inter­molecular C—H...O hydrogen bonding occurs in the crystal.
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