Crystal structure of tin(II) acetate acetylacetonate, Sn(C5H7O2)(C2H3O2) (original) (raw)
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Redetermination of the crystal structure of dimethylbis[2,4-pentanedionato(1−)-κ2O2,O4]tin(IV)
Acta Crystallographica Section E Crystallographic Communications, 2017
The redetermination of the title compound, [Sn(CH3)2(C5H7O2)2] or SnMe2(acac)2, from CCD data recorded at 100 K basically confirms the previous study based on integrated film data recorded at room temperature [Miller & Schlemper (1972).Inorg. Chem.12, 677–681], but reveals a remarkable shrinkage of theaaxis [7.12 (1) > 6.7694 (4) Å]. The molecule belongs to point groupCiwith the SnIVatom on a centre of inversion. The SnIVatom shows a slightly distorted octahedral coordination sphere with the methyl groups intranspositions and a Sn—C bond length of 2.115 (2) Å which may serve as a standard value for an Sn—CH3bond of an octahedrally coordinated SnIVatom. The Sn—O bonds involving the two carbonyl groups of the acetylacetonate ligand are of equal length [2.180 (1) and 2.183 (1) Å], as are the C=O [1.273 (1) and 1.274 (1) Å] and C—C bond lengths [1.393 (2) and 1.400 (2) Å]. The acetylacetonate ligand deviates considerably from planarity, with a dihedral angle of 5.57 (9)° between the ...
Di-tert-butylbis(N-isopropyl-N-methyldithiocarbamato-κ2S,S′)tin(IV)
Acta Crystallographica Section E Structure Reports Online, 2010
The dithiocarbamate anions in the title compound, [Sn(C 4 H 9) 2 (C 5 H 10 NS 2) 2 ], chelate to the Sn IV atom, which is six-coordinated in a skew-trapezoidal-bipyramidal geometry. The molecule lies across a twofold rotation axis. The crystal studied was a non-merohedral twin, the ratio of the twin components being 0.82 (1):0.18 (1). metal-organic compounds m356 Muthalib et al.
Acta Crystallographica Section E Crystallographic Communications, 2017
The complete molecule of the title compound, [Sn(C4H9)2(C5H10NOS2)2], is generated by a crystallographic mirror plane, with the SnIVatom and the two inner methylene C atoms of the butyl ligands lying on the mirror plane; statistical disorder is noted in the two terminal ethyl groups, which deviate from mirror symmetry. The dithiocarbamate ligand coordinates to the metal atom in an asymmetric mode with the resulting C2S4donor set defining a skew trapezoidal bipyramidal geometry; then-butyl groups are disposed to lie over the longer Sn—S bonds. Supramolecular chains aligned along thea-axis direction and sustained by methylene-C—H...S(weakly coordinating) interactions feature in the molecular packing. A Hirshfeld surface analysis reveals the dominance of H...H contacts in the crystal.
Tricyclohexyl{2-[(3,5-di-tert-butyl-4-hydroxybenzyl)sulfanyl]acetato-κO}tin(IV)
Acta Crystallographica Section E Structure Reports Online, 2010
Triorganotin carboxylates are either monomeric or polymeric, depending primarily on the types of organic groups bonded to the tin atom. Triphenyltin carboxylates generally adopt a five-coordinated tin geometry with carboxylate bridges linking adjacent molecules into a polymeric chain, whereas tricyclohexyltin carboxylates have discrete four-coordinated tin structures (Tiekink, 1991). The title compound is another example of a four-coordinated tricyclohexyltin carboxylate, in which the Sn IV atom is in a distorted tetrahedral geometry. The close proximity of the carboxylate O3 towards the Sn atom [Sn1•••O3 = 2.897 (3) Å] contributes to the distortion of the geometry (Alcock & Timms, 1968). Experimental The title compound was prepared by refluxing 2-(3,5-di-tert-4-hydroxybenzyl)sulfanylacetic acid (0.39 g, 1 mmol) with tricyclohexyltin hydroxide (0.39 g, 1 mmol) in absolute ethanol for 2 h. Colourless crystals were obtained by slow evaporation of the solution at room temperature. Refinement H atoms were placed at calculated positions and treated as riding on their parent atoms, with C-H = 0.93 (aromatic), 0.98 (CH), 0.97 (CH 2) and 0.96 (CH 3) Å and O-H = 0.82 Å and with U iso (H) = 1.2(1.5 for methyl and hydroxyl)U eq (C,O).
Bis (acetato-2O, O') diphenyl (pyridine-N) tin (IV)
2010
The asymmetric unit of the title compound, [Sn(C6H5)2- (C2H3O2)2(C5H5N)], contains two crystallography independent molecules. In both molecules, the SnIV atom is sevencoordinated in a distorted pentagonal-bipyramidal geometry with the two phenyl groups in axial positions. The two molecules differ mainly in the torsion of the phenyl and pyridine rings. The dihredral angles between the phenyl rings are 89.54 (15) and 60.11 (14) in the two molecules while the dihedral angles between the pyridine rings and the acetate groups are 12.6 (2) and 41.77 (13) in the two molecules.