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

ABSTRACT: 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.

SUBMITTER: Niu CY

PROVIDER: S-EPMC2959788 | 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

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

Project description:In the title compound, [Ag(C(14)H(10)N(4)O)(2)]CF(3)SO(3), two N atoms from two independent pyridyl rings of two N'-3-cyano-benzyl-ideneisonicotinohydrazide ligands coordinate to the unique Ag(I) ion, forming a nearly linear coordination geometry. Adjacent silver complexes are primarily linked together by Ag?N inter-actions, with Ag?N separations of 2.877?(2) and 3.314?(2)?Å. On the other hand, one CF(3)SO(3) (-) anion inter-acts with hydrazone groups of two neighbouring ligands via N-H?O hydrogen bonds. These weak inter-molecular inter-actions contribute to the formation of supra-molecular chains. In addition, there are Ag?O inter-actions [2.787?(2)?Å] between Ag and O atoms from adjacent chains.

| S-EPMC2971296 | biostudies-literature

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

Project description: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).

| S-EPMC2959965 | 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

(E)-N'-(3,4-Dichloro-benzyl-idene)nicotino-hydrazide monohydrate.

Project description:In the title compound, C(13)H(9)Cl(2)N(3)O·H(2)O, the 3,4-dichloro-benzene ring is nearly coplanar with the pyridine ring, making a dihedral angle of 4.78?(8)°. Inter-molecular O-H?O, O-H?N, N-H?O and weak C-H?O hydrogen bonding is present in the crystal structure.

| S-EPMC2970266 | biostudies-literature

N'-(But-2-enyl-idene)-iso-nicotino-hydrazide.

Project description:In the title Schiff base compound, C(10)H(11)N(3)O, the pyridine ring is twisted with respect to the mean plane containing the hydrazine chain, making a dihedral angle of 31.40?(9)°. The NH group inter-acts with the N atom of the pyridine ring through N-H?N hydrogen bonds to build up a zigzag chain developing parallel to the (01) plane.

| S-EPMC2959776 | biostudies-literature

N'-[1-(2-Pyrid-yl)ethyl-idene]nicotino-hydrazide.

Project description:In the the title compound, C(13)H(12)N(4)O, the dihedral angle between the aromatic ring planes is 21.7?(3)°. In the crystal structure, interm-olecular N-H?O hydrogen bonds lead to C(4) chains.

| S-EPMC2915023 | biostudies-literature

N'-(2-Meth-oxy-1-naphthyl-idene)nicotino-hydrazide.

Project description:The title compound, C(18)H(15)N(3)O(2), was prepared by the reaction of 2-methoxy-naphthaldehyde with nicotinic acid hydrazide in methanol. The dihedral angle between the naphthalene ring system and the pyridine ring is 9.2?(3)°. An intra-molecular C-H?N hydrogen bond is observed. In the crystal structure, mol-ecules are linked into chains running along the c axis by inter-molecular N-H?O hydrogen bonds.

| S-EPMC2983545 | 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

N'-(5-Chloro-2-hydroxy-benzyl-idene)nicotinohydrazide.

Project description:There are two independent Schiff base mol-ecules in the asymmetric unit of the title compound, C(13)H(10)ClN(3)O(2). The dihedral angles between the benzene and pyridine rings are 12.8?(2) and 1.9?(2)° in the two mol-ecules. Intra-molecular O-H?N hydrogen bonds are observed. Mol-ecules are linked into centrosymmetric R(4) (4)(26) motifs by N-H?O and N-H?N inter-actions.

| S-EPMC2969359 | biostudies-literature

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