Polymorphism in iodotris(tri-p-tolylphosphine)silver( I)

The reaction of silver(I) iodide with tri(p-tolyl)phosphine in MeCN solution in 1:3 molar ratio yields a polymorph of the complex of the formula [AgI{P(4-MeC₆H₄)₃}₃], with the Ag atom in a distorted tetrahedral environment. A polymorphic structure of this complex (a) is compared with previously published crystal structures (b), determined at different temperatures. The two polymorphs are compared using r.m.s. overlay calculations as well as half-normal probability plots

4-[(4-Methyl­phen­yl)amino]­pent-3-en-2-one

The title enamino­ketone, C12H15NO, is a derivative of 4-(phenyl­amino)­pent-3-en-2-one with an approximately planar pentenone backbone, the greatest displacement from the plane being 0.042 (1) Å; the asymmetry in C—C distances in the group suggests the presence of unsaturated bonds. The dihedral angle between the benzene ring and the pentenone plane is 29.90 (4)°. In the crystal, an intra­molecular N—H⋯O inter­action and an inter­molecular C—H⋯O hydrogen bond are observed

Carbonyl[4-(2,6-dimethyl­phenyl­amino)pent-3-en-2-onato-κ2 N,O](triphenyl­phosphine-κP)rhodium(I) acetone hemi­solvate

In the title compound, [Rh(C13H16NO)(C18H15P)(CO)]·0.5C3H6O, the Rh atom exhibits a square-planar coordination geometry, being coordinated by the N and O atoms of the bidentate β-diketonato ligand, a P atom from the triphenyl­phosphine unit and a C atom from the carbonyl group. The asymmetric unit also contains a disordered half-mol­ecule, lying about an inversion center, of the acetone solvate. Inter­molecular C—H⋯O hydrogen bonds are observed between a C—H group of the triphenyl­phosphine unit and a carbonyl O atom and between the methyl group of the enamino­ketonato backbone and the solvent O atom. In addition, an intra­molecular inter­action is observed between a C—H group of the triphenyl­phosphine unit and the O atom of the enamino­ketonato ligand

Isomorphism in monomeric 1:3 complexes of silver(I) salts with tri-p-tolylphosphine.

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Dicarbon­yl[4-(2,6-dimethyl­phenyl­amino)­pent-3-en-2-onato-κ2 N,O]rhodium(I)

In the title compound, [Rh(C13H16NO)(CO)2], a square-planar coordination geometry is observed around the RhI atom, formed by the N and O atoms of the bidentate ligand and two C atoms from two carbonyl ligands. The RhI atom is displaced from the plane through these surrounding atoms by 0.0085 (2) Å. The dihedral angle between the benzene ring and the N—C—C—C—O plane is 89.82 (6)°, and the N—Rh—O bite angle for the bidentate ligand is 90.53 (6)°. An inter­molecular C—H⋯O inter­action is observed between a methyl group of the benzene ring and a carbonyl O atom

4-(2-Methylanilino)pent-3-en-2-one

The title enamino ketone, C12H15NO, a derivative of 4-(phenylamino)pent-3-en-2-one, presents a roughly planar [greatest displacement of an atom from the pentenone plane is 0.033 (2) Å] pentenone backbone, enhanced by an intramolecular N—H...O hydrogen bond; the asymmetry in C—C distances in the group suggests the presence of unsaturated bonds. The overall geometry in the free ligand differs significantly from that in other reported compounds, in which it is coordinated to rhodium; this is reflected in the bond distances [the N...O distance is significantly increased (0.2 Å) upon coordination to the metal] and the dihedral angle between the benzene ring and the pentenone backbone [49.53 (5)°]. All of the methyl goups are rotationally disordered over two orientations of equal occupancy

4-(2,3-Dimethylanilino)pent-3-en-2-one

In the title compound, C13H17NO, the dihedral angle between the aryl ring and the aminoacrylaldehyde mean plane [N—C=C—C=O; maximum deviation = 0.0144 (9) Å] is 53.43 (4)°. There is an intramolecular N—H...O hydrogen bond involving the amine and carbonyl groups. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming chains propagating along [001]

Carbonyl[4-(2,3-dimethylphenylamino)pent-3-en-2-onato-κ2N,O](triphenylphosphine-κP)rhodium(I)

In the title compound, [Rh(C13H16NO)(C18H15P)(CO)], the coordination geometry of the RhI atom is square-planar, formed by the coordinating N and O atoms of the bidentate enaminoketonate ligand, one C atom from the carbonyl group and a P atom from triphenylphosphine. The complex displays a 0.591 (3):0.409 (3) ratio disorder of the phenyl unit of the monoanionic N,O-bidentate ligand. Intramolecular hydrogen bonding is observed between a C—H group of the triphenylphosphine unit and the O atom of the enaminoketonate ligand