ABSTRACT
The asymmetric unit of the title organic-inorganic hybrid complex [systematic name: ethane-1,2-diaminium hexa-chlorido-stannate(IV)-4-meth-oxy-benz-alde-hyde (1/2)], (C2H10N2)[SnCl6]·2C8H8O2, contains one half of an ethyl-enedi-ammonium cation, one half of an [SnCl6]2- anion and one p-anisaldehyde mol-ecule. Both the organic cation and the quasi-regular octa-hedral inorganic anion are located about inversion centres. The organic cations and [SnCl6]2- anions lie in layers parallel to the ac plane with p-anisaldehyde mol-ecules occupying the space between the layers. A network of classical N-Hâ¯Cl and N-Hâ¯O hydrogen bonds exists between the ethyl-enedi-ammonium cations and the [SnCl6]2- anions and p-anisaldehyde mol-ecules. These inter-actions, together with non-classical C-Hâ¯O inter-actions between the ethyl-enedi-ammonium cations and the p-anisaldehyde mol-ecules, serve to hold the structure together. The crystal studied was refined as a two-component twin.
ABSTRACT
The crystal structure of the title salt, (C25H22P)[Sn(C6H5)3Cl2] or (PhCH2PPh3)[SnPh3Cl2], consists of [PhCH2PPh3](+) cations and [SnPh3Cl2](-) anions in which the Sn(IV) atom is linked to two Cl atoms and three phenyl groups in a trigonal-bipyramidal geometry, with the Cl atoms in trans positions. The cation adopts a tetra-hedral geometry. In the crystal, the cations and the anions are connected by C-Hâ¯Cl hydrogen bonds, leading to an infinite chain propagating along the c direction.
ABSTRACT
The central Sn(IV) atom of the penta-nuclear title complex, {[Sn(CH(3))(3)](3)O(2)C(CH(2))PO(3)[Sn(CH(3))(3)(H(2)O)](2)HO(2)C(CH(2))PO(3)}, is located on a twofold rotation axis; due to symmetry, the H atom of the carboxyl group of the anion is disordered with a site occupancy of 0.5. The central Sn(IV) atom is bonded to three methyl groups (one of which is disordered about the twofold rotation axis) and is symmetrically trans coordinated by two phospho-nate groups with Sn-O = 2.2665â (12)â Å while the other SnMe(3) residues are asymmetrically trans coordinated with Sn-O = 2.1587â (12) and 2.3756â (13)â Å for one residue and Sn-O = 2.1522â (12) and 2.4335â (12)â Å for the other; the Sn-O distances involving two O atoms trans to carboxyl-ate are longer than those trans to phospho-nate groups. The Sn-C distances lie in a very narrow range [2.112â (2)-2.133â (3)â Å]. The oxyanion behaves as a tetra-coordinating ligand. The bridging mode of the latter leads to the formation of layers parallel to (001) that are inter-connected by O-Hâ¯O and C-Hâ¯O hydrogen bonds.
ABSTRACT
The structure of the title compound, (C(14)H(16)N)(2)[HgCl(2)(SO(4))], consists of an infinite chain propagating along the c direction, containing Hg(II) ions tetra-coordinated by two bridging O atoms of bis-monodentate sulfate anions and two chloride ligands. In the the crystal, N-Hâ¯O hydrogen bonding between the cations and the anionic chains consolidates the packing. The crystal structure was determined from an inversion twin with approximately equal twin domains.
ABSTRACT
Single crystals of the title salt, (C(3)H(10)N(3))(2)[Sn(CH(3))(2)(H(2)O)(4)](SO(4))(2), formed concomitantly with the already known [Sn(CH(3))(3)](2)SO(4)·2H(2)O. In the title structure, the Sn(IV) atom displays a slightly distorted octa-hedral coordination geometry defined by four O water atoms in the equatorial positions and two methyl groups in the axial positions. In the crystal, various O-Hâ¯O and N-Hâ¯O hydrogen-bonding inter-actions between the organic cation and the coordinated water mol-ecules as donors and the sulfate O atoms as acceptors result in a three-dimensional structure. The Sn(IV) atom is located on an inversion centre, resulting in half of the complex metal cation being in the asymmetric unit.
ABSTRACT
In the title salt, [(CH(3))(2)CH](2)NH(2)](+)·[C(6)H(5)PO(2)(OH)](-), the anions are linked by pairs of O-Hâ¯O hydrogen bonds, forming inversion dimers. These dimers are bridged by the cations via N-Hâ¯O hydrogen bonds, leading to a three-dimensional structure.
