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Bis{μ-4,4',6,6'-tetra-bromo-2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]-diphenol-ato}-bis-[(dimethyl-formamide)cadmium(II)].

ABSTRACT: The Schiff base ligand derived from the condensation of 3,5-dibromo-salicylaldehyde and 1,2-phenyl-enediamine, in the presence of dimethyl-formamide, forms the centrosymmetric title neutral binuclear distorted complex, [Cd(2)(C(20)H(10)Br(4)N(2)O(2))(2)(C(3)H(7)NO)(2)], with the two octa-hedral Cd atoms linked by two O atoms. All bond lengths and angles show normal values.

SUBMITTER: Shi S

PROVIDER: S-EPMC2914924 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4,4',6,6'-Tetra-tert-butyl-2,2'-[1,2-phenyl-enebis(nitrilo-methyl-idyne)]diphenol acetone solvate.

Project description:In the Schiff base mol-ecule of the title compound, C(36)H(48)N(2)O(2)·C(3)H(6)O, the central benzene ring makes dihedral angles of 46.64?(10) and 49.34?(10)° with the two outer benzene rings, and the two outer benzene rings form an angle of 39.13?(8)°. There are two intra-molecular O-H?N hydrogen bonds involving the two hydr-oxy groups, which generate S(6) ring motifs. In the crystal structure, the Schiff base mol-ecules are linked into a chain along the a axis by C-H?? inter-actions. The acetone solvent mol-ecules are attached to the chain via C-H?O hydrogen bonds.

| S-EPMC2960780 | biostudies-literature

6,6'-Dimeth-oxy-2,2'-[4,5-dimethyl-o-phenyl-enebis(nitrilo-methyl-idyne)]diphenol monohydrate.

Project description:In the title compound, C(24)H(24)N(2)O(4)·H(2)O, the dihedral angles between the central benzene ring and the two outer benzene rings of the Schiff base are 65.06?(9) and 3.02?(9)°. Strong intra-molecular O-H?N hydrogen bonds generate S(6) ring motifs. The H atoms of the water mol-ecule act as donors in the formation of bifurcated O-H?(O,O) inter-molecular hydrogen bonds with the O atoms of the hydr-oxy and meth-oxy groups with R(1) (2)(5) ring motifs; these may influence the mol-ecular conformation.

| S-EPMC2983671 | biostudies-literature

Bis{?-4,4'-dibromo-2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}bis-[chloridomanganese(III)] N,N-dimethyl-formamide disolvate.

Project description:The asymmetric unit of the title compound, [Mn(2)(C(20)H(12)Br(2)N(2)O(2))(2)Cl(2)]·2C(3)H(7)NO, contains one half of a centrosymmetric dinuclear Mn(III) complex and an N,N-dimethyl-formamide solvent mol-ecule. In the complex, the two Mn(III) ions are bridged by two O atoms from two symmetry-related N,N'-bis-(5-bromo-salicyl-idene)-1,2-diimino-benzene dianionic ligands with the longer Mn-O distance of 2.703?(3)?Å, thus each Mn ion is six-coordinated by two N and three O atoms from the two dianionic ligands and one capping Cl atom in a distorted octa-hedral environment. The crystal structure displays inter-molecular ?-? inter-actions between adjacent benzene rings, with a shortest centroid-centroid distance of 3.673?(2)?Å, and inter-molecular C-H?O, C-H? Cl and C-H? Br hydrogen bonds.

| S-EPMC2979766 | biostudies-literature

6,6'-Dieth-oxy-2,2'-[propane-1,2-diyl-bis(nitrilo-methyl-idyne)]diphenol.

Project description:In the title mol-ecule, C(21)H(26)N(2)O(4), the dihedral angle between the two benzene rings is 88.4?(3)°. Two fairly strong intra-molecular O-H?N hydrogen bonds may, in part, influence the mol-ecular conformation.

| S-EPMC2968515 | biostudies-literature

(Dimethyl-formamide-?O){4,4',6,6'-tetra-bromo-2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato-?O,N,N',O'}copper(II) dimethyl-formamide solvate.

Project description:In the title compound, [Cu(C(20)H(10)Br(4)N(2)O(2))(C(3)H(7)NO)]·C(3)H(7)NO, the Cu(II) ion is coordinated by two N atoms and two O atoms from a tetra-dentate Schiff base ligand and the O atom of one dimethyl-formamide ligand in an almost square-pyramidal geometry. The uncoordinated dimethyl-formamide solvent mol-ecule is disordered over two sets of positions with occupancies of 0.741?(4) and 0.259?(4). The crystal packing is stabilized by C-H?O inter-actions.

| S-EPMC2969304 | biostudies-literature

4,4'-Dimethyl-2,2'-[1,2-phenyl-enebis(nitrilo-methyl-idyne)]diphenol.

Project description:In the title Schiff base, C(22)H(20)N(2)O(2), the benzene ring forms dihedral angles of 53.92?(1) and 3.62?(1)° with the two salicylaldimine groups. There are two strong O-H?N intra-molecular hydrogen bonds. The crystal packing is stabilized by weak inter-molecular C-H?O hydrogen bonds and ?-? stacking inter-actions (average distance 3.39?Å).

| S-EPMC2915229 | biostudies-other

6,6'-Di-tert-butyl-2,2'-[1,2-phenyl-ene-bis(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title Schiff base compound, C(28)H(32)N(2)O(2), has a twisted geometry, the dihedral angles between the central benzene ring and the other two benzene rings being 29.12?(14) and 26.01?(14)°. Four intra-molecular C-H?O hydrogen bonds and two intra-molecular O-H?N hydrogen bonds stabilize the mol-ecular structure. In the crystal packing, mol-ecules are stacked along the a axis and stabilized by ?-? inter-actions [centroid-centroid distance = 3.6724?(17)?Å]. The crystal studied was found to be a non-merohedral twin, the refined ratio of twin components being 0.374?(5):0.626?(5).

| S-EPMC2972107 | biostudies-literature

6,6'-Dihydr-oxy-2,2'-[(pentane-1,5-diyl-dioxy)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title compound, C(19)H(22)N(2)O(6), assumes a W-shaped configuration with the dihedral angle between the two halves of the mol-ecule being 82.48?(5)°. There is one half-mol-ecule in the asymmetric unit with a crystallographic twofold rotation axis passing through the central C atom of the five methylene groups in the [-CH=N-O-(CH(2))(5)-O-N=CH-] bridge. The dihedral angle formed by the two benzene rings in each mol-ecule of the title compound is 84.18?(4)°. There are strong intra-molecular O-H?N and O-H?O hydrogen bonds and weak inter-molecular ?-? stacking inter-actions between neighbouring benzene rings, and the inter-molecular plane-to-plane distances are 3.488?(2) and 3.841?(3)?Å along the b and c axes, respectively. In the crystal structure, inter-molecular O-H?O hydrogen bonds link each mol-ecule to two others, forming an infinite three-dimensional supra-molecular structure.

| S-EPMC2962213 | biostudies-literature

6,6'-Dihydr-oxy-2,2'-[(butane-1,4-diyldi-oxy)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the centrosymmetric title compound, C(18)H(20)N(2)O(6), assumes an E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. Intra-molecular O-H?O and O-H?N bonds are found between the hydroxyl groups and adjacent O (or N) atoms. In the crystal structure, inter-molecular O-H?O bonds link each mol-ecule to two others, forming a layered network.

| S-EPMC2959278 | biostudies-literature

6,6'-Dieth-oxy-2,2'-[propane-1,3-diyl-dioxy-bis(nitrilo-methyl-idyne)]diphenol.

Project description:The complete mol-ecule of the title compound, C(21)H(26)N(2)O(6), is generated by a crystallographic twofold axis and adopts a trans configuration with respect to the azomethine group. The two benzene rings are almost perpendicular to one another, making a dihedral angle of 89.53?(3)°. In the mol-ecular structure, pairs of intra-molecular O-H?N hydrogen bonds generate two six-membered rings. The crystal structure is further stabilized by inter-molecular C-H?O hydrogen bonds, which link four adjacent mol-ecules into a network structure.

| S-EPMC2983666 | biostudies-literature

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