In the title salt, C(7)H(11)N(2) (+)·Br(3) (-), the cation and the near-linear anion [Br-Br-Br = 179.41 (8)°] both show whole-mol-ecule disorder about crystallographic twofold rotation axes. The cation is weakly hydrogen-bonded to the anion by an N-H⋯Br inter-action. The crystal studied was found to be a racemic twin, with a twin component of nearly 50%.
The two aromatic systems in the title compound, C(14)H(10)N(2)O, enclose a dihedral angle of 77.9 (1)°, and the C-O-C inter-ring bond angle is 117.6 (1)°.
The title compound, C(15)H(11)BrO(2), exists as a diketone in which the two benzoyl groups are nearly perpendicular to each other [dihedral angles = 79.9 (1) and 87.4 (1)° in the two independent mol-ecules].
3,5-dichloro-2-hydroxy-benzaldehyde), C(7)H(4)Cl(2)O(2), crystallizes as discrete mol-ecules, the conformation of which may be influenced by an intra-molecular hydr-oxy-carbonyl O-H⋯O hydrogen bond.
The two aromatic rings in the title compound, C(10)H(9)N(3), are aligned at 23.4 (1)° and the bridging C-N-C angle is 128.9 (1)°. In the crystal structure, intermolecular N-H⋯N hydrogen bonds result in a chain motif, the repeat distance of which is half the b axial length of 8.8851 (3) Å.
The Sn(IV) atom in the title carboxyl-ate-bridged polymer, [Sn(C(7)H(7))(3)(C(9)H(7)O(2))](n), exists in a trans-C(3)SnO(2) trigonal-bipyramidal geometry (average covalent Sn-O = 2.167 Å, average dative Sn-O = 2.361 Å and average O-Sn-O = 169.6°). The polymer propagates as a helical chain along the b axis with a repeat distance that is half the b-axial length. There are four independent formula units in the asymmetric unit; two are disposed about a false center of inversion with respect to the other two so that the space group emulates a centric space group.
In the title hydrated molecular salt, C(12)H(9)N(2) (+)·C(4)H(5)O(6) (-)·2H(2)O, the cation is almost planar (r.m.s. deviation = 0.014 Å); the carbon skeleton of the anion assumes a trans conformation [C-C-C-C torsion angle = -179.86 (14)°]. The carboxyl end of one hydrogen tartrate anion forms a short hydrogen bond to the carboxyl-ate end of another anion [O⋯O = 2.508 (2) Å] in a head-to-tail manner, forming a chain; the chains and water mol-ecules inter-act, generating an O-H⋯O hydrogen-bonded layer. The cation binds to the layer by an N-H⋯O hydrogen bond.
In the title tribenzyl-chloridotin-triphenyl-phosphine adduct, [Sn(C(7)H(7))(3)Cl(C(18)H(15)OP)], the Sn(IV) atom is in a trans-C(3)SnClO trigonal-bipyramidal geometry and is displaced out of the C(3)Sn girdle in the direction of the axial Cl atom by 0.112 (1) in one independent mol-ecule and by 0.167 (1) Å in the other. The phenyl ring of one of the six benzyl units was refined as equally disordered over two sets of sites.
In the title compound, C(10)H(12)ClN(3)OS, the -C=N-N-C- chain bridging the ethyl-imino group and the benzene ring adopts an extended conformation with a C-N-N-C torsion angle of -171.98 (11)°. The imino H atom of the chain is a hydrogen-bond donor to the S atom of an inversion-related mol-ecule, forming a supra-molecular dimer. The hy-droxy H atom is intra-molecularly hydrogen bonded to the azomethine N atom.
In the title Schiff base mol-ecule, C(13)H(11)ClN(2)O, the non-H atoms are approximately coplanar (r.m.s. deviation = 0.115 Å) and the two benzene rings are twisted by 9.36 (3)° with respect to each other. The hy-droxy group is hydrogen bonded to the azomethine N atom. In the crystal, an N-H⋯π inter-action is observed between the imino group and the hy-droxy-benzene ring of an adjacent mol-ecule.
Mol-ecules of the title compound, [Sn(C(7)H(6)Cl)(2)Cl(2)], lie on a twofold rotation axis which passes through the Sn atom. The Sn(IV) atom exists in a distorted tetra-hedral geometry. Adjacent mol-ecules are linked by weak Sn⋯Cl contacts [3.703 (1) Å], forming a linear chain motif extending along the b axis.
The crystal structure of the title compound, (C(9)H(14)N)(2)[CuBr(4)], consists of two quarternary ammonium cations and a tetra-hedral cuprate anions. Weak C-H⋯Br hydrogen bonding is present between the cation and anion in the crystal structure.
In the title salt, (C(9)H(14)N)[CdBr(2)Cl], the Cd(II) atom is five-coordinated in a trigonal-bipyramidal coordination environment. All three of the halogen sites show disorder as a result of substitution of Cl for Br or Br for Cl. Two of the three halogen atoms are involved in bridging a pair of Cd(II) atoms, generating a linear polyanionic chain motif.
In the crystal structure of the zinc(II) complex of bicine, [Zn(C(6)H(12)NO(4))(2)], the deprotonated amino acid O,N,O'-chelates to the metal atom through a carboxyl-ate O atom, a hy-droxy O atom and the N atom, the three atoms occupying fac positions of the distorted octa-hedron surrounding the metal atom. The metal atom lies on a center of inversion. The uncoordinated carboxyl-ate O atom is hydrogen bonded to the hy-droxy groups of adjacent mol-ecules, these two hydrogen bonds leading to the formation of a three-dimensional network.
In the title mol-ecular salt, [C(6)H(5)(CH(3))(3)N](2)[SnBr(4.75)Cl(1.25)], the Sn(IV) atom (site symmetry ) adopts an octa-hedral coordination geometry. The Br and Cl atoms are disordered over three sites in 0.7415 (13):0.2585 (14), 0.8514 (14):0.1486 (14) and 0.7821 (14):0.2179 (14) ratios.
The asymmetric unit of the title compound, C(7)H(11)NO(3)S(2), contains two independent mol-ecules with similar mol-ecular structures. The morpholine ring adopts a chair conformation, and the C(2)N-C(=S)-S fragment is planar in the two independent mol-ecules (r.m.s. deviations = 0.01 and 0.02 Å). The two mol-ecules are disposed about a false center of inversion and are held together by a pair of O-H⋯O hydrogen bonds. The crystal studied was a racemic twin; the minor twin component refined to 17%.
The two independent mol-ecules in the title compound (systematic name: 4-amino-4-oxobut-2-enoic acid), C(10)H(9)NO(3), are both essentially planar (r.m.s. deviations = 0.05 and 0.06 Å). In both mol-ecules, the -OH group forms an intra-molecular hydrogen bond to the amide O atom. Adjacent mol-ecules are linked by N-H⋯O hydrogen bonds into a flat ribbon that runs along the a axis of the monoclinic unit cell.
The Mn(II) atom in the two independent ion-pairs of the title salt, [Mn(C(2)F(3)O(2))(C(18)H(12)N(6))(H(2)O)(2)]C(2)F(3)O(2), is N,N',N''-chelated by the neutral N-heterocycle and O,O'-chelated by the carboxyl-ate ion, the five atoms involved in chelation comprising a penta-gon around it. The apical sites of the trans-penta-gonal bipyramidal coordination geometry are occupied by two water mol-ecules. The cations and lattice anions are linked by O-H⋯O and O-H⋯N hydrogen bonds into a three-dimensional network.
The Cd atom in the hydrated title salt, (C(7)H(11)N(2))(2)[CdBr(4)]·H(2)O, exists in an approximately tetra-hedral coordination geometry, with Br-Cd-Br angles in the range 105.52 (3)-111.50 (3)°. The cation, anion and water mol-ecule inter-act by O-H⋯Br, N-H⋯Br and N-H⋯O hydrogen bonds, forming a linear chain structure running along the a axis.
The Sn atom in the title mol-ecule, [Sn(C(6)H(5))(3)(C(16)H(10)NO(3))(C(2)H(6)O)], shows a trans-C(3)SnO(2) trigonal bipyramidal coord-in-ation. Adjacent mol-ecules are linked by O-H⋯O and O-H⋯N hydrogen bonds into a two-dimensional array parallel to (100). The ethanol ligand is disordered, with two sites of equal occupancy being resolved for the ethyl group.