86 research outputs found
Electrodeposition of Zn-Ni alloy from an acid sulfate bath containing ethanolamines
Electrodeposition of Zn-Ni alloy contg. 10-15% Ni was carried out from an acid sulfate bath contg. ethanolamines. The effect of plating variables - such as metal ion ratio in the bath, pH, c.d., temp., stirring, concn. of ethanolamines in the bath and thickness - on the alloy compn. and cathodic c.d. was studied. The phase structure and the surface morphol. of electrodeposited Zn-Ni alloy (SEM) and harness (on Vicker's scale) are reported
Ethyl 4-(3-hydroxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate
In the molecular structure of the title compound, C21H25NO4, the dihydropyridine ring adopts a flattened boat conformation while the cyclohexenone ring is in an envelope conformation. In the crystal structure, molecules are linked into a two-dimensional network parallel to (10) by N—H⋯O and O—H⋯O hydrogen bonds. The network is generated by R
4
4(30) and R
4
4(34) graph-set motifs
3-Ethyl-4-methyl-1H-pyrazol-2-ium-5-olate
The title compound, C6H10N2O, is a zwitterionic pyrazole derivative. The crystal packing is predominantly governed by a three-center iminium–amine N+—H⋯O−⋯H—N interaction, leading to an undulating sheet-like structure lying parallel to (100)
Dimethyl 4-(3-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate
The 1,4-dihydropyridine ring in the title compound, C17H19NO5, has a flattened-boat conformation, and the benzene ring is almost orthogonal to it [dihedral angle = 82.98 (12)°]. The hydroxy group is disordered over two positions in a 0.780 (4):0.220 (4) ratio. In the crystal, hydrogen-bonding interactions of the type Na—H⋯Oc and Oh—H⋯Oc (a = amine, c = carbonyl and h = hydroxy) link the molecules into a three-dimensional network
(2E)-3-(4-Bromophenyl)-1-(2-methyl-4-phenyl-3-quinolyl)prop-2-en-1-one
The conformation about the ethene bond [1.316 (3) Å] in the title compound, C25H18BrNO, is E. The quinoline ring forms dihedral angles of 67.21 (10) and 71.68 (10)° with the benzene and bromo-substituted benzene rings, respectively. Highlighting the non-planar arrangement of aromatic rings, the dihedral angle formed between the benzene rings is 58.57 (12)°
Ethyl 2-acetyl-3-(4-chloroanilino)butanoate
The title compound, C14H18ClNO3, adopts an extended conformation, with all of the main chain torsion angles associated with the ester and amino groups trans. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds are observed
4-(4-Chlorophenyl)-N-[(E)-4-(dimethylamino)benzylidene]-1,3-thiazol-2-amine
The title compound, C18H16ClN3S, adopts an extended molecular structure. The thiazole ring is inclined by 9.2 (1) and 15.3 (1)° with respect to the chlorophenyl and 4-(dimethylamino)phenyl rings, respectively, while the benzene ring planes make an angle of 19.0 (1)°. A weak intermolecular C—H⋯π contact is observed in the crystal structure
1,1′-(p-Phenylenedimethylene)dipiperidin-4-one
In the molecule of the title compound, C18H24N2O2, the piperidine rings are in chair conformations. The crystal structure is stabilized by intermolecular C—H⋯O hydrogen bonding. There are neither C—H⋯π nor π–π interactions in the structure
1,1′-[4-(2-Methoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-diyl]diethanone
In the title compound, C18H21NO3, the 1,4-dihydropyridine ring exhibits a flattened boat conformation. The methoxyphenyl ring is nearly planar [r.m.s. deviation = 0.0723 (1) Å] and is perpendicular to the base of the boat [dihedral angle = 88.98 (4)°]. Intermolecular N—H⋯O and C—H⋯O hydrogen bonds exist in the crystal structure
3,3,6,6-Tetramethyl-9-phenyl-3,4,5,6-tetrahydro-9H-xanthene-1,8(2H,7H)-dione
In the title compound, C23H26O3, the three six-membered rings of the xanthene system are non-planar, having total puckering amplitudes, Q
T, of 0.443 (2), 0.202 (2) and 0.449 (2) Å. The central ring adopts a boat conformation and the outer rings adopt sofa conformations. The crystal structure is stabilized by van der Waals interactions
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