Diaqua­bis­(N,N-diethyl­pyridine-3-carboxamide-κN¹)bis­{4-[2-(2,4-dioxopentan-3-yl­idene)hydrazin-1-yl]benzoato-κO}copper(II)

In the title compound, [Cu(C₁₂H₁₁N₂O₄)₂(C₁₀H₁₄N₂O)₂(H₂O)₂], the Cu^II atom lies on a center of inversion and is coordinated by carboxyl­ate O atoms, pyridine N atoms and two water mol­ecules in an elongated octa­hedral geometry. The pyridine ring is oriented at a dihedral angle of 74.83 (12)° with respect to the benzene ring. Intra­molecular O—H...O and N—H...O hydrogen bonding is observed. The water mol­ecule is a hydrogen-bond donor to the carbonyl O atom of an adjacent carboxyl­ate group, generating a chain running along the a axis. One of the ethyl groups is disordered over two sets of sites in a 0.787 (5):0.213 ratio.

catena-Poly[[aqua­bis­{4-[2-(2,4-dioxopentan-3-yl­idene)hydrazin-1-yl]benzo­ato-κO}copper(II)]-μ-N,N-diethyl­pyridine-3-carboxamide-κ²N¹:O]

The Cu^II atom in the title compound, [Cu(C₁₂H₁₁N₂O₄)₂(C₁₀H₁₄N₂O)(H₂O)]_n, lies in a square plane defined by the O atoms of the carboxyl­ate ions, the N atom of the N-heterocycle and the water mol­ecule. Coordination by an amido O atom of an adjacent N-heterocycle in the apical direction leads to a polymeric chain running along [01]. The chain motif is consolidated by hydrogen bonds involving the water mol­ecule; the water mol­ecule is a hydrogen-bond donor to the free carbonyl atoms of the carboxyl­ate ions. Intra­molecular N—H...O hydrogen bonds also occur.

9-(2-Hy­droxy-4,4-dimethyl-6-oxocyclo­hex-1-en-1-yl)-3,3-dimethyl-2,3,4,9-tetra­hydro-1H-xanthen-1-one

The cyclo­hexene ring that constitutes a part of the tetra­hydroxanthene fused-ring system of the title compound, C₂₃H₂₆O₄, adopts a flattened half-chair conformation that approximates an envelope conformation (in which the methyl­ene C atom bearing the two methyl substituents represents the flap) as five of the six atoms lie approximately on a plane (r.m.s. deviation = 0.020 Å). The mean plane of the cyclo­hexene ring with the hy­droxy substituent is approximately perpendicular to the mean plane of the tetra­hydroxanthene system. In the crystal, adjacent mol­ecules are linked by O—H...O_carbon­yl hydrogen bonds into a chain running along the b axis.

Ethyl 2,7,7-trimethyl-5-oxo-4-phenyl-1,4,5,6,7,8-hexa­hydro­quinoline-3-carboxyl­ate

In the title compound, C₂₁H₂₅NO₃, the hydro­pyridine ring that constitutes a part of the hexa­hydro­quinoline fused-ring system adopts a sofa conformation; the methine C atom deviates from the least-squares plane defined by the remaining five non-H atoms (r.m.s. deviation = 0.088 Å) by 0.454 (3) Å. The phenyl ring is aligned at 85.5 (1)° with respect to this mean plane. In the crystal, adjacent molecules are linked via an N—H...O hydrogen bond, involving the amino group and the carbonyl O atom of the fused-ring system, forming chains running along [100]. The ethyl group is disordered over two positions in a 0.609 (6):0.391 (6) ratio.

2-(4-Meth­oxy­phen­yl)-4,5-diphenyl-1-(prop-2-en-1-yl)-1H-imidazole

The asymmetric unit of the title compound, C₂₅H₂₂N₂O, contains two independent mol­ecules (A and B), with significantly different conformations. In mol­ecule A, the central imidazole ring makes dihedral angles of 88.26 (10) and 12.74 (11)° with the two phenyl rings, and 22.06 (9)° with the benzene ring. In mol­ecule B, one of the phenyl rings is disordered over two sites, each having an occupancy of 0.5. Here the central imidazole ring forms dihedral angles of 79.24 (10)° with the ordered phenyl ring, and 3.5 (5) and 22.6 (5)° with the two parts of the disordered phenyl ring. The dihedral angle involving the benzene ring is 67.49 (10)°. The —N—C(H₂)—C(H)—C(H₂) torsion angles of the prop-1-ene group in the two mol­ecules are very similar, 0.5 (3) and 1.3 (4)° for mol­ecules A and B, respectively. The crystal structure is stabilized by C—H...π inter­actions.