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Catena-Poly[[[N'-(4-cyano-benzyl-idene)nicotinohydrazide)silver(I)]-μ-N'-(4-cyano-benzyl-idene)nicotinohydrazide] hexa-fluorido-phosphate].

ABSTRACT: In the title polymer, {[Ag(C(14)H(10)N(4)O)(2)]PF(6)}(n), each Ag(I) ion is coordinated by two N atoms from two pyridyl rings of independent N'-(4-cyano-benzyl-idene)nicotinohydrazide ligands, and one N atom from one carbonitrile group of a symmetry-related ligand in a distorted T-shaped geometry. The ligands exhibit two modes of coordination. One acts as a bridge connecting Ag atoms to form one-dimensional chains along [01]. The other acts as a terminal monodentate ligand, coordinating to Ag through its pyridyl N atom. Two neighbouring anti-parallel chains in the crystal are connected through N-H⋯O hydrogen bonds. Other adjacent chains are packed via Ag⋯O inter-actions, with Ag⋯O separations of 2.876 (2) Å. In addition, PF(6) (-) counter-anions inter-act with the hydrazone groups through N-H⋯F hydrogen bonds. The PF(6) (-) anion is disordered over two sites, with occupancies of 0.773 (8) and 0.227 (8).

SUBMITTER: Wan XS

PROVIDER: S-EPMC2959965 | biostudies-literature |

REPOSITORIES: biostudies-literature

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catena-Poly[[[[N'-(4-cyano-benzyl-idene)nicotinohydrazide]silver(I)]-?-[N'-4-cyano-benzyl-idene)nicotinohydrazide]] hexa-fluoridoarsenate].

Project description:In the title compound, {[Ag(C(14)H(10)N(4)O)(2)]AsF(6)}(n), the Ag(I) ion is coordinated by two N atoms from two different pyridyl rings and one N atom from one carbonitrile group of three different N'-(4-cyano-benzyl-idene)nicotinohydrazide ligands in a distorted T-shaped geometry. The Ag-N(carbonitrile) bond distance is significant longer than those of Ag-N(pyrid-yl). The bond angles around the Ag(I) atom are also not in line with those in an ideal T-shaped geometry. One type of ligand acts as the bridge that connects Ag(I) atoms into chains along [01]. These chains are linked to each other via N-H?O hydrogen bonds and Ag?O inter-actions with an Ag?O separation of 2.869?(2)?Å. In addition, the [AsF(6)](-) counter-anions are linked to the hydrazone groups through N-H?F hydrogen bonds. Four of the F atoms of the [AsF(6)](-) anion are disordered over two sets of sites with occupancies of 0.732?(9) and 0.268?(9).

| S-EPMC2977146 | biostudies-literature

A one-dimensional Ag coordination polymer: catena-poly[[[[N'-(4-cyano-benzyl-idene)nicotinohydrazide]silver(I)]-μ-N'-(4-cyano-benzyl-idene)nicotino-hydrazide] trifluoro-methane-sulfonate].

Project description:In the title compound, {[Ag(C(14)H(10)N(4)O)(2)]CF(3)SO(3)}(n), the unique Ag(I) ion is coordinated by two N atoms from two pyridine rings of two independent N'-(4-cyano-benzyl-idene)nicotinohydrazide ligands and one N atom of a carbonitrile group of a symmetry-related N'-(4-cyano-benzyl-idene)nicotino-hydrazide ligand, forming a distorted T-shaped coordination environment. One of the independent ligands acts as a bridge connecting Ag(I) ions, forming chains along the a axis. In the crystal structure, two neighbouring anti-parallel chains are connected through N-H⋯O hydrogen bonds. In addition, there are relatively short Ag⋯O contacts of 2.723 (3) Å, which connect the chains into a three-dimensional structure.

| S-EPMC2959788 | biostudies-literature

catena-Poly[[[(2-pyridone-κO)silver(I)]-μ-2-pyridone-κO:O] hexa-fluorido-phosphate].

Project description:The asymmetric unit of the polymeric title salt, {[Ag(C(5)H(5)NO)(2)]PF(6)}(n), comprises an Ag(I) cation (located on a twofold axis), two 2-pyridone ligands (with distinct coordination modes), and half a PF(6) (-) anion (situated on a centre of inversion). The Ag(I) atom is in an approximately octa-hedral AgO(6) coordination geometry, which is stabilized by intra-molecular N-H⋯O hydrogen bonds. The result of the bridging mode of the 2-pyridone ligand is the formation of a supra-molecular chain along the c axis; these are consolidated in the crystal by C-H⋯F inter-actions.

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Bis[1-benzyl-3-(4-methyl-phen-yl)imidazol-2-yl-idene]silver(I) hexa-fluorido-phosphate.

Project description:The title silver N-heterocyclic carbene compound, [Ag(C(17)H(16)N(2))(2)]PF(6), crystallizes as a mononuclear salt. The two imidazole rings, which are almost coplanar [maximum deviation from the least squares plane of 0.05?(2)?Å], are linked by the Ag atom with a C-Ag-C angle of 178.60?(9)°. In the crystal, C-H?F hydrogen bonds, weak ?-? inter-actions [centroid-centroid distances = 3.921?(1) and 3.813?(3)?Å] and C-H?? inter-actions lead to a supermolecular structure.

| S-EPMC3212182 | biostudies-literature

Poly[[{μ(3)-1,2-bis-[(3-cyano-benzyl-idene)-hydrazono]-1,2-diphenyl-ethane}silver(I)] hexa-fluoridoantimonate].

Project description:In the title compound, {[Ag(C(30)H(20)N(6))][SbF(6)]}(n), the Ag(+) cation has a three-coordinate environment completed by three N atoms of the 1,2-bis-[(3-cyano-benzyl-idene)hydrazono]-1,2-diphenyl-ethane ligand. The Ag(+) cation coordination geometry is best described as distorted T-shaped. The crystal structure forms a three-dimensional structural polymer.

| S-EPMC2960300 | biostudies-literature

catena-Poly[[silver(I)-?-N-[(pyridin-2-yl)meth-yl]pyridine-3-amine-?(2) N:N'] hexa-fluorido-phosphate].

Project description:In the title polymeric complex, {[Ag(C11H11N3)]PF6} n , the Ag(I) ion is two-coordinated in a nearly linear coordination geometry [N-Ag-N = 175.98?(9)°] by two pyridine N atoms from two symmetry-related N-[(pyridine-2-yl)meth-yl]pyridine-3-amine ligands. Each Ag(I) ion is bridged by the ligands, forming a helical chain propagating along the b-axis direction. The right- and left-handed helical chains are alternately arranged via Ag?Ag [3.2639?(5)?Å] and ?-? stacking inter-actions [centroid-centroid distance = 3.523?(1)?Å], resulting in the formation of a two-dimensional supra-molecular network extending parallel to (101). Weak Ag?F inter-actions [longest Ag?F inter-action = 3.153?(2)?Å], as well as N-H?F and C-H?F hydrogen-bonding inter-actions, occur between the helical chains and the anions.

| S-EPMC4051042 | biostudies-literature

N'-(2-Methoxy-benzyl-idene)nicotinohydrazide.

Project description:The title compound, C(14)H(13)N(3)O(2), was prepared by the reaction of 2-methoxy-benzyaldehyde with nicotinic acid hydrazide in methanol. The dihedral angle between the benzene and pyridine rings is 5.9?(3)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H?O hydrogen bonds, leading to the formation of chains along the c axis; adjacent chains are linked via C-H?O and C-H?N hydrogen bonds.

| S-EPMC2983706 | biostudies-literature

Crystal structure of 1-benzyl-3-methyl-1H-imidazolium hexa-fluorido-phosphate.

Project description:In the title salt, C11H13N2 (+)·PF6 (-), the dihedral angle between the planes of the imidazole and benzene rings is 84.72?(4)°. In the crystal, C-H?F inter-actions connect the cation and anion pairs into a three-dimensional network. Weak ?-? inter-actions are observed between the imidazolium ring and the aromatic benzene ring of an adjacent mol-ecule with C?C and C?N distances ranging from 3.3714?(16) to 3.4389?(15)?Å.

| S-EPMC4257422 | biostudies-literature

Bis[N'-(3-cyano-benzyl-idene)isonicotino-hydrazide]silver(I) trifluoro-acetate.

Project description:In the title compound, [Ag(C(14)H(10)N(4)O)(2)]CF(3)CO(2), the Ag(I) ion is coordinated by two N atoms of the pyridine rings of two N'-(3-cyano-benzyl-idene)isonicotinohydrazide ligands in a nearly linear geometry. In the crystal structure, a combination of close contacts formed via Ag?N inter-actions [Ag?N = 3.098?(2) and 3.261?(2)?Å] from symmetry-related mol-ecules and inter-molecular N-H?O hydrogen bonds between CF(3)CO(2) (-) anions and the hydrazone groups of two ligands give rise to chains. Furthermore, there are Ag?O inter-actions with a separation of 2.765?(2)?Å between chains. The F atoms of the CF(3)CO(2) (-) anion are disordered over two sites with refined occupancies of 0.593?(5) and 0.407?(5).

| S-EPMC2970130 | biostudies-literature

μ-Oxido-bis-{chlorido[tris-(2-pyridylmethyl)amine]manganese(III)} bis-(hexa-fluorido-phosphate).

Project description:In the title compound, [Mn(2)O(C(18)H(18)ClN(4))(2)](PF(6))(2), the Mn atom is chelated by a tetra-dentate ligand via four N atoms, and further bonded to one chloride ion and one bridging oxide, to give a centrosymmetric cation and distorted octa-hedral coordination geometry.

| S-EPMC2915134 | biostudies-literature

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