Counteranion-dependent mechanochromism of a photoluminescent platinum(II) complex with mixed terpyridine and thioglucose.

Mechanical grinding of the ClO4(-) salt of [Pt(H4tg-S)(terpy)](+) (H5tg = 1-thio-β-D-glucose, terpy = 2,2':6',2''-terpyridine), newly prepared from [PtCl(terpy)](+) and H4tg(-), caused its emission band at 630 nm to shift to 667 nm, while such mechanochromism was not observed for the PF6(-) salt that shows an emission band at 670 nm.

Water-molecule-driven vapochromic behavior of a mononuclear platinum(II) system with mixed bipyridine and thioglucose.

A mononuclear platinum(II) complex with mixed bpy and H4tg(-) ligands, [Pt(H4tg-S)2(bpy)]·2H2O (1a; bpy = 2,2'-bipyridine and H5tg = 1-thio-β-D-glucose), is photoluminescent in the solid state and undergoes facile and reversible removal of solvated water molecules accompanied by changes in its absorption and emission wavelengths. The analogous dmbpy complex, [Pt(H4tg-S)2(dmbpy)]·H2O (2a; dmbpy = 4,4'-dimethyl-2,2'-bipyridine), is also emissive in the solid state, but its absorption and emission spectra remain unchanged after dehydration. X-ray crystallographic analyses revealed that the difference in the chromism of 1a and 2a is due to the difference in their hydrogen-bonding networks, which involve solvated water molecules.

The first crystal structure of an alkaline metal salt of thioglucose: potassium 1-thio-β-D-glucoside monohydrate.

In the crystal structure of the title hydrated salt, poly[(μ(2)-aqua)(μ(4)-1-sulfido-β-D-glucoside)potassium], [K(C(6)H(11)O(5)S)(H(2)O)](n) or K(+)·C(6)H(11)O(5)S(-)·H(2)O, each thioglucoside anion coordinates to four K(+) cations through three of its four hydroxy groups, forming a three-dimensional polymeric structure. The negatively charged thiolate group in each anion does not form an efficient coordination bond with a K(+) cation, but forms intermolecular hydrogen bonds with four hydroxy groups, which appears to sustain the polymeric structure. The Cremer-Pople parameters for the thioglucoside ligand (Q = 0.

cis-Dichloridobis(2-phenyl-pyridine-κN)platinum(II).

In the title complex, cis-[PtCl(2)(C(11)H(9)N)(2)], the Pt(II) ion is situated in a slightly distorted square-planar environment coordinated by two N atoms from two 2-phenyl-pyridine ligands and two Cl atoms. The two pyridyl planes are inclined with dihedral angles of 59.1 (2) and 61.

μ-1,2-Bis(diphenyl-phosphan-yl)benzene-κP:P']bis-[chloridogold(I).

In the crystal structure of the non-solvate form of the title compound, [Au(2)Cl(2)(C(30)H(24)P(2))], two almost linear P-Au(I)-Cl units [175.87 (3) and 171.48 (3)°] are in a skewed arrangement with a Cl-Au⋯Au-Cl torsion angle of -65.