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Catena-Poly[[iodidocopper(I)]-μ-4,4',6,6'-tetra-methyl-2,2'-(ethyl-enedithio)dipyrimidine-κN:N'].

ABSTRACT: In the title coordination polymer, [CuI(C(14)H(18)N(4)S(2))](n), the Cu(I) center is trigonally coordinated by two pyrimidine N-atom donors from two distinct dithio-ether ligands and one iodide anion. The Cu and I atoms are located on a twofold axis, whereas the midpoint of the central C-C bond of the dithio-ether ligand is located on an inversion center. Each organic ligand, acting in a bidentate mode, bridges two Cu(I )ions, resulting in the formation of polymeric zigzag chains. The dihedral angle between the two pyrimidine units bonded to the metal center is 88.01 (2)°. The crystal packing is mainly stabilized by van der Waals forces and π-π stacking inter-actions, with an inter-planar distance between the pyrimidine rings of adjacent chains of 3.638 (3) Å.

SUBMITTER: Lu HB

PROVIDER: S-EPMC2969925 | biostudies-literature |

REPOSITORIES: biostudies-literature

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catena-Poly[[(2,2'-bipyrimidine-κN,N)diperchloratocopper(II)]-μ-4,4'-bipyridine-κN:N'].

Project description:The central CuN(4)O(2) motif of the title compound, [Cu(ClO(4))(2)(C(8)H(6)N(4))(C(10)H(8)N(2))](n), exhibits a Jahn-Teller-distorted octa-hedral geometry around the metal centre, showing a considerably long Cu-O bond distance of 2.634 (4) Å towards the second perchlorate group occupying the sixth coordination site, giving a (4+1+1)-type coordination mode. The 4,4'-bipyridine (bipy) ligands are highly twisted with respect to each other, the dihedral angle between the two pyridyl ring planes being 38.9 (2)°. The bipy ligands act as bridging ligands between [Cu(ClO(4))(2)(2,2'-bpym)] (2,2'-bpym is 2,2'-bipyrimidine) units, generating an infinite one-dimensional zigzag chain along [010]. Intra- and intermolecular C-H⋯O hydrogen bonds are present in the crystal structure.

| S-EPMC2961952 | biostudies-literature

2,2',6,6'-Tetra-ethyl-4,4'-methyl-enedibenzonitrile.

Project description:The asymmetric unit of the title compound, C(23)H(26)N(2), contains one half-mol-ecule, which is completed by the operation of a crystallographic twofold axis. In the mol-ecule, the two benzene rings form a dihedral angle of 77.09?(7)°.

| S-EPMC3006736 | biostudies-literature

catena-Poly[{μ-cyanido-bis-[(4,4'-dimethyl-2,2'-bipyridine-κN,N')copper(I)]}-μ-cyanido-copper(I)-μ-cyanido].

Project description:In the title compound, [Cu(3)(CN)(3)(C(12)H(12)N(2))(2)], two 2,2'-bipyridine N,N'-chelated Cu(I) atoms are linked by a cyanide bridge that lies about a center of inversion; the Cu(I) atom exists in a tetra-hedral coordination geometry. This dinuclear entity is linked to another Cu(I) atom that lies on a twofold rotation axis by another cyanide bridge, these bridges giving rise to the formation of a linear chain motif.

| S-EPMC2961986 | biostudies-literature

4,4'-Di-3-pyridyl-2,2'-dithio-dipyrimidine.

Project description:The asymmetric unit of the title compound, C(18)H(12)N(6)S(2), contains one half-mol-ecule situated on a twofold rotational axis that passes through the mid-point of the S-S bond. In the mol-ecule, the C-S-S-C torsion angle is 81.33?(7)°. The crystal packing exhibits no significantly short inter-molecular contacts.

| S-EPMC2969656 | biostudies-literature

catena-Poly[[dimethyl-bis-(thio-cyanato-κN)tin(IV)]-μ-(4,4'-bipyridine-κN:N')].

Project description:The title dimethyl-tin diisothio-cyanate adduct of 4,4'-bipyridine, [Sn(CH(3))(2)(NCS)(2)(C(10)H(8)N(2))](n), adopts a chain motif in which the N-heterocycle functions as a bridge to adjacent all-trans octa-hedrally coordinated tin atoms. The Sn(IV) atom lies on a special position of 2/m site symmetry, the methyl C atom on a special position of 2 site symmetry, and the thio-cyanate and 4,4'-bipyridine on a special position of m site symmetry.

| S-EPMC3052023 | biostudies-literature

catena-Poly[[(2,2'-bipyridine-κN,N')copper(I)]-μ-cyanido-κC:N-[(2,2'-bipyridine-κN,N')copper(I)]-μ-thio-cyanato-κS:N].

Project description:The title compound, [Cu(2)(CN)(SCN)(C(10)H(8)N(2))(2)](n), contains two crystallographically independent Cu(I) atoms, each in a distorted tetra-hedral geometry. Each Cu atom is coordinated by a bidentate chelating 2,2'-bipyridine ligand. A bridging cyanide anion links the two Cu(2,2'-bipyridine) units to form a binuclear unit. Adjacent binuclear units are connected by a thio-cyanate anion into a one-dimensional helical chain along [010]. The cyanide anion is disordered, with each site occupied by both C and N atoms in an occupancy ratio of 0.61 (5):0.39 (5). The S atom of the thio-cyanate anion is also disordered over two sites, with occupancy factors of 0.61 (3) and 0.39 (3). There are π-π inter-actions between the pyridyl rings of neighbouring chains [centroid-centroid distance = 3.82 (1) Å].

| S-EPMC2959861 | biostudies-literature

catena-Poly[[[tetra-aqua-cobalt(II)]-μ-4,4'-bipyridine-κN:N'] bis-(perchlorate) 4,4'-bipyridine disolvate dihydrate].

Project description:In the title compound, {[Co(C(10)H(8)N(2))(H(2)O)(4)](ClO(4))(2)·2C(10)H(8)N(2)·2H(2)O}(n), slightly distorted octa-hedrally coordinated Co(II) ions situated on inversion centers are linked into polycationic chains through 4,4'-bipyridine tethering ligands. These are connected into supra-molecular layers by hydrogen bonding involving aqua ligands, perchlorate anions and uncoordinated water mol-ecules. A twofold inter-penetrated primitive cubic supra-molecular network is formed by the inter-action of pseudo-layers by hydrogen bonding between aqua ligands and unligated 4,4'-bipyridine mol-ecules.

| S-EPMC2959782 | biostudies-literature

catena-Poly[[4',5'-bis-(methyl-sulfan-yl)-4,5-ethyl-enedithio-tetra-thio-fulvalene] [[dichloridomercurate(II)]-μ-dichlorido]].

Project description:The title compound, {(C(10)H(10)S(8))[HgCl(3)]}(n), is a sulfur-rich charge-transfer compound in which C(10)H(10)S(8) (+) cations and HgCl(3) anions are assembled by S⋯S [3.371 (5)-3.588 (5) Å] and S⋯Cl [2.833 (4)-3.488 (4) Å] contacts, and by weak inter-molecular C-H⋯Cl hydrogen bonds, forming a two-dimensional wave-like structure. The two C atoms of the -CH(2)-CH(2)- group in one of the cations are disordered over two sites with relative occupancies of 0.83 (2) and 0.17 (2).

| S-EPMC2968017 | biostudies-literature

catena-Poly[copper(II)-{μ(3)-4,4'-dichloro-2,2'-[butane-1,4-diylbis(nitrilo-methanyl-yl-idene)]diphenolato-κN,O:N',O':O'}].

Project description:The asymmetric unit of the title coordination polymer, [Cu(C(18)H(16)Cl(2)N(2)O(2))](n), consists of a Schiff base complex in which the Cu(II) atom adopts a square-pyramidal coordination geometry, being coordinated by two N and two O atoms of symmetry-related ligands and by a third O atom from a complex related by an inversion center. In the structure, a crystallographic twofold rotation axis bis-ects the central C-C bonds of the n-butyl spacers of the designated Schiff base ligands, making symmetry-related dimeric units, which are twisted around Cu(II) atoms in a bis-bidentate coordination mode. In the crystal, these dimeric units are connected through the third bridging Cu-O bonds [2.3951 (13) Å], forming one-dimensional coordination polymers, which propagate along [001]. Furthermore, inter-molecular π-π inter-actions [centroid-centroid distance = 3.811 (1) Å] stabilize the crystal packing.

| S-EPMC3099832 | biostudies-literature

catena-Poly[copper(II)-{μ(3)-4,4'-dibromo-2,2'-[butane-1,4-diylbis(nitrilo-methanyl-yl-idene)]diphenolato-κN,O:N',O':O'}].

Project description:The asymmetric unit of the title coordination polymer, [Cu(C(18)H(16)Br(2)N(2)O(2))](n), consists of a Schiff base complex in which a crystallographic twofold rotation axis bis-ects the central C-C bonds of the n-butyl spacers of the designated Schiff base ligands, making symmetry-related dimer units, which are twisted around Cu(II) atoms in a bis-bidentate coordination mode. In the crystal, these dimeric units are connected through Cu-O bonds, forming one-dimensional coordination polymers, which propagate along [001]. The Cu(II) atom adopts a square-based pyramidal coordination geometry, being coordinated by two N and two O atoms of symmetry-related ligands and by a third O atom of a neighboring complex. Furthermore, inter-molecular π-π inter-actions [centroid-centroid distance = 3.786 (2) Å] and C-H⋯O inter-actions stabilize the crystal packing.

| S-EPMC3099995 | biostudies-literature

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