Bis{1-[2-(diphenyl­phosphino)­ethyl]-3-ethylimidazol-2-yl­idene}palladium(II) bis­(hexa­fluoridophosphate) acetonitrile 2.85-solvate

In the structure of the title compound, [Pd(C19H21N2P)2](PF6)2·2.85CH3CN, the two six-membered NHC-phosphane chelate rings form a distorted square-planar coordination geometry around the PdII atom, which lies 0.212 (1) Å above the coordination plane. The sum of the bond angles at PdII is 358.3°, with C—Pd—P bite angles of 84.03 (10) and 83.54 (9)°. The structure includes three acetonitrile solvent mol­ecules, one with partial site occupation and one with severe disorder, which was eventually excluded from the refinement

Crystal structure of dichloridobis(1,3,4,5-tetramethyl-1H-imidazol-2-ium-2-thiolate-κS)nickel(II)

In the molecular structure of the title compound, [NiCl2(C7H12N2S)2], the NiII atom has a distorted tetrahedral geometry, coordinated by two Cl atoms [Ni—Cl= 2.2336 (6) Å] and two thione S atoms [Ni—S= 2.3024 (6) Å]. The angles at the NiII cation, which lies on a twofold rotation axis, are Cl—Ni—Cl = 115.58 (3)° and S—Ni—S = 94.55 (3)°. All other angles at the central NiII atom range from 109.46 (2) to 112.96 (2)°. The C—S—Ni angle is 99.91 (6)°. The planes of two imidazolium rings make a dihedral angle of 70.56 (6)°

Crystal structure of dichloridobis(1,3-diisopropyl-4,5-dimethyl-2H-imidazole-2-thione-κS)zinc(II)

The molecular structure of the title compound, [ZnCl2(C11H20N2S)2], shows tetrahedral Zn coordination from two Cl ligands and two thione groups. The Zn—Cl bond lengths differ sligthly at 2.2310 (10) and 2.2396 (11) Å while the Zn—S bond lengths are equal at 2.3663 (9) and 2.3701 (10) Å. The Cl—Zn—Cl angle is 116.04 (4) and S—Zn—S is 101.98 (3)°. All other angles at the central Zn atom range from 108.108 (3) to 110.21 (4)°. The C—S—Zn angles are 100.75 (10) and 103.68 (11)°, the difference most probably resulting from packing effects, as both the C—S and both the S—Zn bonds are equal in each case. The two imidazole ring planes make a dihedral angle of 67.9 (1)°. The CH3 groups of one isopropyl moiety are disordered over two sets of sites with occupation factors of 0.567 (15) and 0.433 (15). It may be noteworthy that the isomolecular Cu complex shows a different crystal packing (group–subgroup relation) with the Cu atom lying on a twofold rotation axis. In the crystal, the shortest non-bonding contact is a C—H...Cl interaction. This leads to the formation of centrosymmetric dimers that are stacked along the c-axis

Bis{1-[2-(diphenylphosphanyl)ethyl]-3-ethylimidazol-2-ylidene}nickel(II) diiodide acetonitrile disolvate

The molecular structure of the title compound, [Ni(C19H21N2P)2]I2·2CH3CN, shows two six-membered N-heterocyclic carbene/phosphane chelate rings that form a nearly square-planar coordination geometry around the NiII atom, which lies 0.190 (1) Å above the C2P2 plane. The sum of the bond angles at the NiII atom is 358.68 (6)°, with C—Ni—P bite angles of 82.89 (5) and 84.08 (6)°. The two carbene rings make a dihedral angle of 52.65 (8)°

Dichloridobis(1,3-diisopropyl-4,5-dimethyl-1H-imidazol-3-ium-2-thiolate-κS)copper(II)

The molecular structure of the title compound, [CuCl2(C11H20N2S)2], shows the CuII atom with a distorted tetrahedral geometry from two Cl atoms [Cu—Cl = 2.2182 (6) Å] and two thione S atoms [Cu—S = 2.3199 (6) Å]. The angles at the copper cation, which lies on a twofold rotation axis, are Cl—Cu—Cl = 142.84 (4)°, Cl—Cu—S = 94.80 (2) and 99.97 (2)°, and S—Cu—S = 132.46 (4)°. The planes of the two imidazolium rings make a dihedral angle of 76.92 (8)°