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Catena-Poly[[[dichloridomercury(II)]-?-1,4-bis-(3-pyridyl-amino-meth-yl)benzene-?N:N'] N,N-dimethyl-formamide monosolvate].

ABSTRACT: The crystal structure of the polymeric title compound, {[HgCl(2)(C(18)H(18)N(4))]·C(3)H(7)NO}(n), features an N-heterocyclic ligand which links adjacent HgCl(2) units into a helical chain running along the b axis. The coordination geometry of the Hg(II) atom is a distorted tetra-hedron. The dimethyl-formamide mol-ecule is disordered over two positions in a 1:1 ratio, and is linked to the complex mol-ecules via N-H?O hydrogen bonds.

SUBMITTER: Gao S

PROVIDER: S-EPMC3212137 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature

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catena-Poly[[[dichloridomercury(II)]-μ-1,4-bis-(3-pyridyl-amino-meth-yl)benzene-κN:N'] N,N-dimethyl-formamide monosolvate].

Gao Shan S Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20110709 Pt 8

The crystal structure of the polymeric title compound, {[HgCl(2)(C(18)H(18)N(4))]·C(3)H(7)NO}(n), features an N-heterocyclic ligand which links adjacent HgCl(2) units into a helical chain running along the b axis. The coordination geometry of the Hg(II) atom is a distorted tetra-hedron. The dimethyl-formamide mol-ecule is disordered over two positions in a 1:1 ratio, and is linked to the complex mol-ecules via N-H⋯O hydrogen bonds. ...[more]

PMID: 22090839

Similar Datasets

catena-Poly[[dichloridomercury(II)]-?-1,4-bis-[(pyridin-2-yl)meth-oxy]benzene-?N:N'].

Project description:In the title compound, [HgCl(2)(C(18)H(16)N(2)O(2))](n), the Hg(II) atom is four-coordinated in a distorted tetra-hedral environment defined by two Cl atoms and two N atoms from two 1,4-bis-(pyridin-2-ylmeth-oxy)benzene ligands. The ligand shows a non-coplanar conformation, in which the dihedral angles between the two terminal pyridine rings and the linking benzene ring are 7.275?(17) and 74.020?(14)°. The flexible ligands link the Hg(II) atoms into a chain running along [010], with an Hg?Hg separation of 10.335?(5)?Å, which is equal to the b axis. The chains are connected by C-H?O and C-H?Cl hydrogen bonds.

| S-EPMC3201560 | biostudies-literature

catena-Poly[[(diiodidocadmium)-?-{1-[(1H-benzimidazol-2-yl)meth-yl]-1H-imidazole-?N:N'}] N,N-dimethyl-formamide monosolvate].

Project description:In the title complex, {[CdI(2)(C(11)H(10)N(4))]·C(3)H(7)NO}(n), the Cd(II) ion is four-coordinated by two N atoms from two 1-[(1H-benzimidazol-1-yl)meth-yl]-1H-imidazole (bmi) ligands and by two terminal I(-) anions in a distorted tetra-hedral geometry. One of the two I(-) anions is disordered over two sets of sites, with refined occupancies of 0.66?(5) and 0.34?(5). The Cd(II) ions are bridged by bmi ligands, leading to the formation of a chain along [001]. Dimethyl-formamide solvent mol-ecules are located between these chains. Classical N-H?O hydrogen bonding between the bmi ligands and the solvent mol-ecules leads to a consolidation of the structure.

| S-EPMC3238781 | biostudies-literature

Poly[[(?2-benzene-1,3-di-carboxyl-ato){?2-1,4-bis-[(1H-imidazol-1-yl)meth-yl]benzene}-cadmium] di-methyl-formamide monosolvate].

Project description:The title coordination polymer, {[Cd(C8H4O4)(C14H14N4)]·C3H7NO} n , was synthesized by solvothermal reaction of metallic cadmium with the semi-rigid neutral ligand 1,4-bis-[(1H-imidazol-1-yl)meth-yl]benzene (bix) and the V-shaped benzene-1,3-di-carb-oxy-lic acid (m-H2bdc). The structure exhibits a pseudo-C-centring which is almost fulfilled by the polymeric metal complex but not by the solvent dimethylform-amide (DMF) mol-ecules. The asymmetric unit contains two independent Cd(II) ions, two m-bdc(2-) ligands, one and two half bix ligands, and two solvent DMF mol-ecules. The Cd(II) ions are both five-coordinated by three O atoms from two different m-bdc(2-) ligands and two N atoms from two different bix ligands in a distorted square-pyramidal geometry. The m-bdc(2-) ligands adopt a chelate-monodentate coordination mode, connecting neighboring Cd(II) ions into a zigzag chain parallel to [110]. Adjacent chains are further cross-linked by bix ligands, giving rise to a puckered sheet nearly perpendicular to the chain direction. Thus, each Cd(II) ion is connected to four neighboring Cd(II) ions through two m-bdc(2-) anions and two bix ligands, giving rise to the final non-inter-penetrating uninodal layer with sql (4,4) topology.

| S-EPMC3884267 | biostudies-literature

1,4-Bis(benzimidazol-2-yl)benzene dimethyl-formamide disolvate.

Project description:The aromatic mol-ecule of the title compound, C(20)H(14)N(4)·2C(3)H(7)NO, occupies a special position on an inversion center. The benzimidazole unit (planar to within 0.008?Å) forms a dihedral angle of 9.1?(2)° with the central benzene ring. The benzimidazole H atom participates in a hydrogen bond with the dimethyl-formamide solvent molecule, thus giving rise to the title 1:2 aggregate. These aggregates are further linked in the crystal structure by aromatic ?-? stacking inter-actions [centroid-centroid distance = 6.356?(2)?Å].

| S-EPMC2968526 | biostudies-literature

catena-Poly[[(nitrato-?O,O')silver(I)]-?-N,N'-bis-(3-pyridyl-methyl-idene)benzene-1,4-diamine].

Project description:In the title compound, [Ag(NO(3))(C(18)H(14)N(4))](n), the Ag(I) atom is coordinated by two N atoms from two N,N'-bis-(3-pyridyl-methyl-idene)benzene-1,4-diamine (bpbd) mol-ecules and two O atoms from a bidentate nitrate anion. The bpbd mol-ecules bridge the Ag atoms into a chain. Two adjacent chains are further connected by Ag?Ag inter-actions [3.1631?(8)?Å], forming a double-chain structure. A ?-? inter-action [centroid-centroid distance = 3.758?(3)?Å] occurs between the double chains. Inter-chain C-H?O hydrogen bonds are observed.

| S-EPMC3007296 | biostudies-literature

Poly[tris-(?-2-amino-benzene-1,4-dicarboxyl-ato)tetra-kis-(N,N-dimethyl-formamide)-diyttrium(III)].

Project description:The asymmetric unit of the title coordination polymer, [Y(2)(C(8)H(5)NO(4))(3)(C(3)H(7)NO)(4)](n), contains one Y(3+) ion, three half-mol-ecules of the 2-amino-benzene-1,4-dicarboxyl-ate (abz) dianion and two O-bonded N,N-dimethyl-formamide (DMF) mol-ecules. Each abz half-mol-ecule is completed by crystallographic inversion symmetry and its -NH(2) group is disordered in each case [relative occupancies within the asymmetric unit = 0.462?(18):0.538?(18), 0.93?(2):0.07?(2) and 0.828?(16):0.172?(16)]. The combination of disorder and crystal symmetry means that each of the four C-H atoms of the benzene ring of each of the dianions bears a statistical fraction of an -NH(2) group. The coordination geometry of the yttrium ion is a fairly regular YO(8) square anti-prism arising from its coordination by two DMF mol-ecules, four monodentate abz dianions and one O,O-bidentate abz dianion. The polymeric building unit is a dimeric paddle-wheel with two metal ions linked by four bridging abz dianions. Further bridging linkages connect the dimers into a three-dimensional framework containing voids in which highly disordered DMF mol-ecules are presumed to reside.

| S-EPMC3050248 | biostudies-literature

catena-Poly[[dichloridomercury(II)]-N'-nicotinoylnicotinohydrazide].

Project description:The title complex, [HgCl(2)(C(12)H(10)N(4)O(2))](n), is composed of one Hg(II) ion, one nnh ligand (nnh = N'-nicotinoylnicotinohydrazide) and two coordinated chloride ions. The Hg(II) ion shows a distorted tetra-hedral geometry, being surrounded by two N atoms from two nnh ligands and two chloride ions. Due to the bridging role of nnh, the Hg(II) atoms are connected into polymeric chains along the c axis, which are further inter-linked via N-H?O and C-H?Cl hydrogen-bonding inter-actions, forming a three-dimensional network.

| S-EPMC3343788 | biostudies-literature

catena-Poly[[bis-(nitrato-?O)cadmium]bis-[?-1,4-bis-(pyridin-3-yl-meth-oxy)benzene-?N:N']].

Project description:In the title compound, [Cd(NO(3))(2)(C(18)H(16)N(2)O(2))(2)](n), the six-coordinated Cd(II) ion is located on an inversion center and has a distorted octa-hedral environment defined by four N atoms from four 1,4-bis-(pyridin-3-ylmeth-oxy)benzene ligands and two O atoms from two nitrate anions. The ligands link the Cd(II) ions into a ribbon-like structure running along [201]. One O atom of the nitrate anion is disordered over two positions with site-occupancy factors of 0.59?(2) and 0.41?(2).

| S-EPMC3200741 | biostudies-literature

catena-Poly[[[aqua-tris-(pyridine-?N)nickel(II)]-?-2,3,5,6-tetra-chloro-benzene-1,4-dicarboxyl-ato-?O:O] pyridine monosolvate].

Project description:The asymmetric unit of the title compound, {[Ni(C(8)Cl(4)O(4))(C(5)H(5)N)(3)(H(2)O)]·C(5)H(5)N}(n), contains two independent nickel(II) cations displaying a distorted octa-hedral coordination geometry provided by the N atoms of three pyridine mol-ecules, the O atom of a water mol-ecule, and O atoms of two monodentate ?(2)-bridging tetra-chloro-terephthalate dianions. The metal atoms are linked by the dianions into zigzag chains running parallel to [11]. The crystal packing is stabilized by O-H?N and O-H?O hydrogen bonds.

| S-EPMC3011545 | biostudies-literature

Poly[diaqua-(?(4)-benzene-1,2,4,5-tetra-carboxyl-ato)[?(2)-1,4-bis-(3-pyridyl-meth-yl)piperazine]dizinc(II)].

Project description:In the title compound, [Zn(2)(C(10)H(2)O(8))(C(16)H(20)N(4))(H(2)O)(2)](n), the Zn(II) atom is in a distorted tetra-hedral environment, being coordinated by one N atom from a 1,4-bis-(3-pyridyl-meth-yl)piperazine (3-bpmp) ligand, two O atoms from two carboxyl-ate groups of the pyromellitate anion and one water mol-ecule. The distortion of the tetrahedral coordination may be ascribed to the hydrogen bonds between the carboxyl-ate groups and the adjacent water mol-ecules. Each Zn(II) atom links to three organic ligands and each pyromellitate ligand coordinates to four Zn(II) atoms, forming a (3,4)-connected infinite three-dimensional framework. O-H?N inter-actions also occur.

| S-EPMC3120526 | biostudies-literature

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