trans-Carbonyl­chloro­bis­(tri-m-tolyl­phosphino)­rhodium(I) di­chloro­methane solvate

The title compound, [RhCl{P(C₇H₇)₃}₂(CO)]·CH₂Cl₂, where P(C₇H₇)₃ is tri-m-tolyl­phosphine, crystallizes with a dichloromethane molecule in the asymmetric unit. Important geometrical parameters are Rh—P = 2.3229 (15) and 2.3269 (15) Å, Rh—Cl = 2.3659 (15) Å, Rh—C = 1.793 (6) Å, C—Rh—Cl = 174.6 (2)°, P—Rh—C = 90.33 (17)° and 92.68 (17)°, and Rh—C[triple bond]O = 176.2 (5)°. The effective cone angles for the phosphine ligands were calculated to be 160 and 155°.

Carbonyl­(tri­phenyl­arsine)(tropolonato)­rhodium(I)

The title complex, [Rh(C₇H₅O₂)(C₁₈H₁₅As)(CO)], has a distorted square-planar geometry. The most important bond distances and angles include Rh—C = 1.788 (10) Å, Rh—O(trans to CO) = 2.039 (6) Å, Rh—O(trans to As) = 2.059 (6) Å, Rh—As = 2.3507 (13) Å, O—Rh—O = 78.1 (2)° and O—C—C—O = 3.4 (12)°. The short interplanar distances between the tropolonate ligands [3.57 (5) Å] and phenyl groups [3.51 (5) Å] of neighbouring mol­ecules indicate π–π stacking interactions, which stabilize the crystal packing.

trans-Carbonyl­chloro­bis[tris­(penta­fluoro­phenyl)phosphine)]rhodium(I)

The title compound, trans-[RhCl(C₁₈F₁₅P)₂(CO)], crystallizes with one independent mol­ecule in the asymmetric unit. Important geometric parameters are Rh—P = 2.2797 (14) and 2.2993 (14) Å, Rh—Cl = 2.3642 (12) Å, Rh—C = 1.824 (4) Å, C—Rh—Cl = 174.12 (13)°, P—Rh—C = 91.73 (13) and 93.71 (13)°, P—Rh—P = 169.38 (4)° and Rh—C[triple bond]O = 176.7 (4)°. The effective cone angles (θ_E) for the phosphine ligands were calculated to be 172 and 173°.

trans-(Isothio­cyanato-κN)phenyl­bis(triphenyl­phosphine-κP)platinum(II)

The crystal structure of the title compound, trans-[Pt(C₆H₅)(NCS)(C₁₈H₁₅P)₂], represents a typical example where steric crowding around the platinum metal centre induces N-coordination of the thio­cyanate ligand. The compound crystallizes on a twofold rotation axis. Selected geometrical parameters are Pt—C = 2.019 (6) Å, Pt—P = 2.3007 (11) Å, Pt—N = 2.052 (6) Å, C—Pt—P = 92.47 (3)°, P—Pt—P′ = 175.06 (5)° and N—Pt—P = 87.53 (3)°. The compound represents a rare example of a trans bis­phosphine complex of platinum(II) containing the NCS⁻ ligand.

Carbonyl(8-hydroxy­quinolinato)[tris­(2,6-dimethyl­phenyl)phosphite]rhodium(I)

In the title compound, [Rh(C₉H₆NO)(C₂₄H₂₇O₃P)(CO)], the mol­ecules pack in a tail-to-tail fashion, with a π–π stacking distance of 3.76 (6) Å, due to the steric effect of the phosphite ligand. The effective cone angle (Θ_E) for the phosphite ligand is 183°.

1,2-Dibenzo­yl-3,4-bis­(4-methoxy­phen­yl)cyclo­butane

The title compound, C₃₂H₂₈O₄, crystallizes with two conformers, α and β, in the asymmetric unit. In both conformers, the benzo­yl and methoxy­phen­yl groups are in cis positions. The cyclo­butane rings are puckered, with average absolute torsion angles of 10.8 (2) and 11.4 (1)° for conformers α and β, respectively. The crystal packing is stabilized by weak inter­molecular C—H...O hydrogen bonds and benzene π–π inter­actions.

{μ-2-[1-(N,N-Dimethyl­amino)eth­yl]ferrocene-1,1′-diylbis(diphenyl­phosphine)-κ²P:P′}bis­[chloro­gold(I)]

The structure of the title compound, [Au₂Fe(C₂₁H₂₃NP)(C₁₇H₁₄P)Cl₂], displays the pseudo-linear [P–Au–Cl = 175.4 (1) and 174.0 (1)°] two-coordinate geometry usually observed in gold(I) complexes. The Au—P bond distances are 2.237 (2) and 2.224 (2) Å and the Au—Cl distances are 2.271 (3) and 2.278 (2) Å. The bis­(diphenyl­phosphino)ferrocenyl ligand links the gold metal centres in a bidentate fashion via the ferrocene group, thus leading to a binuclear gold system.

Carbon­yl(8-hydroxy­quinolinato)[tris­(2-methyl­phen­yl) phosphite]rhodium(I)

The mol­ecules of the title compound, [Rh(C₉H₆NO)(C₂₁H₂₁O₃P)(CO)], pack in a `tail-to-tail' fashion, with a π-stacking distance of 3.500 (1) Å. The effective cone angle (Θ_E) for the phosphite ligand is 168°. The bidentate oxine ligand has a bite angle of 81.27 (11)° and the Rh—P bond distance is 2.189 (1) Å.