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Trisodium bis-{1-[iminio-(morpholino)meth-yl]guanidinium} bis-[hexa-hydrogen-hexa-molybdoaluminate(III)] chloride icosa-hydrate.

ABSTRACT: In the title compound, Na(3)(C(6)H(15)N(5)O)(2)[Al(OH)(6)Mo(6)O(18)](2)Cl·20H(2)O, the [Al(OH)(6)Mo(6)O(18)](3-) polyoxo-anion has a B-type Anderson structure exhibiting approximate D(3d) symmetry. There are two types of sodium cations: the Na(+) cations of type I have a distorted octa-hedral coordination geometry formed by six O atoms and are statistically distributed over two positions with equal occupancies, while the coordination polyhedra of the two Na(+) cations of type II share one Cl anion located on an inversion center. The latter fragment, containing a Cl anion and two sodium cations, links two polyoxoanions into centrosymmetric blocks. The diprotonated 1-[imino-(morpholino)meth-yl]guanidinium cations and uncordinated water mol-ecules contribute to extensive N-H⋯O and O-H⋯O hydrogen bonding, resulting in the formation a three-dimensional supra-molecular structure.

SUBMITTER: Wang F

PROVIDER: S-EPMC2961980 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of hepta-guanidinium nona-hydrogen bis-[α-hexa-molybdoplatinate(IV)] hepta-hydrate.

Project description:The title compound, (CH6N3)7H9[PtMo6O24]2·7H2O, containing the well-known Anderson-type heteropolyoxomolybdate, was obtained by recrystallization of its powdered guanidinium salt. The protonated O atoms in the polyanion were confirmed by electron-density maps, inter-polyanion hydrogen bonds and bond-valance sums (BVS). The {[H4.5PtMo6O24]2}(7-) polyanion is the same as that already characterized in K7[H4.5PtMo6O24]2·11H2O [space group P-1; Lee & Joo (2010 ▶). Acta Cryst. E66, i8-i9]. The heteropolyanions form inversion-generated dimers, {[H4.5PtMo6O24]2}(7-), held together by each of the four μ3-O-H⋯μ1-O, two μ2-O-H⋯μ2-O hydrogen bonds and one centrosymmetric μ3-O-H-μ3-O hydrogen bond. The H atom of the centrosymmetric hydrogen bond is located on an inversion centre. One guanidinium ion and one water mol-ecule are equally disordered about a twofold rotation axis.

| S-EPMC4350731 | biostudies-literature

Tris[hexa-amminecobalt(III)] bis-[tri-oxalato-cobaltate(II)] chloride dodeca-hydrate.

Project description:The title compound, [Co(III)(NH₃)₆]₃[Co(II)(C₂O₄)₃]₂Cl·12H₂O, was synthesized under hydro-thermal conditions. The asymmetric unit comprises two [Co(NH₃)₆]³⁺ cations, one located on a threefold axis and the other on a site of symmetry -3, a [Co(C₂O₄)₃]⁴⁺ anion, located on a threefold axis, one sixth of a chloride anion [disordered over two sites, one threefold (site occupancy = 0.5) and the other -3 (site occupancy (0.25)] and two water molecules. Both Co(III) centers are six-coordinated by NH₃ mol-ecules, forming [Co(NH₃)₆]³⁺ octa-hedra, with Co-N distances in the range 1.958 (2)-1.977 (3) Å. The title structure gives the first example of the [Co(C₂O₄)₃]⁴⁻ anion, with the distorted octa-hedral environment of Co(II) center formed by six O atoms from three oxalate residues. The Co-O bond lengths are 2.0817 (18) to 2.0979 (18) Å. Multiple N-H⋯O, N-H⋯Cl and O-H⋯O hydrogen bonds link the cations, anions and water mol-ecules into a three-dimensional network.

| S-EPMC3393183 | biostudies-literature

Hexaaqua-hexa-kis(μ(2)-3,5-diamino-4H-1,2,4-triazole)trinickel(II) tris-(hexa-fluoridosilicate) icosa-hydrate.

Project description:The trinuclear cation of the title compound, [Ni(3)(C(2)H(5)N(5))(6)(H(2)O)(6)][SiF(6)](3)·20H(2)O, has the six 3,5-diamino-1,2,4-triazole ligands each bridging two metal atoms; the metal atom in the middle, which lies on a special position (of 32 site symmetry), is connected to six N atoms in an octa-hedral geometry. The other metal atom, which lies on a special position (of 3 site symmetry), is connected to three N atoms and three O atoms. One hexa-fluroridosilicate anion lies on a site of 3 symmetry and the other lies on a site of symmetry. The hexa-cation, dianions and uncoordinated water mol-ecules inter-act through hydrogen bonds to form a three-dimensional network. One uncoordinated water molecule is disordered, with site occupancy 0.3.

| S-EPMC2961398 | biostudies-literature

Crystal structure of tetra-guanidinium [hexa-hydrogen hexa-arsenato(V)tetra-vanadate(V)] tetra-hydrate.

Project description:The complete polyoxidometallate anion in the title compound, (CH6N3)4[H6V4As6O30]·4H2O, is generated by crystallographic inversion symmetry. The polyhedral building units are distorted VO6 octa-hedra and AsO3OH tetra-hedra. The VO6 units feature a short formal V=O double bond and are linked by a common edge. Two such V2O6 double octahedral units are linked by four isolated AsO3OH tetra-hedra to complete the anion, which features two inter-nal O-H⋯O hydrogen bonds. In the crystal, O-H⋯O hydrogen bonds between the polyoxidometallate anions generate (01-1) sheets. The sheets are connected by cation-to-cluster N-H⋯O hydrogen bonds, and cation-to-water N-H⋯O links also occur. The O atom of one of the water mol-ecules is disordered over two sites in a 0.703 (17):0.297 (17) ratio.

| S-EPMC4186164 | biostudies-literature

Hexaaqua-cobalt(II) bis-{[N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinato]nickel(II)} hexa-hydrate.

Project description:In the title compound, [Co(H(2)O)(6)][Ni(C(12)H(11)N(2)O(5))](2)·6H(2)O, the Ni(II) atom has a nearly square-planar coordination with two N and two O atoms of the N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinate Schiff base ligand (L(3-)). The Co(II) atom sits on an inversion center and is coordinated to six aqua ligands in a slightly distorted octa-hedral geometry. The [Co(H(2)O)(6)](2+) cations and [NiL](-) anions form columns along the a axis by O-H?O hydrogen bonds. Additional hydrogen bonds between the uncoordinated and coordinated water molecules help to consolidate the crystal packing.

| S-EPMC2977345 | biostudies-literature

Hexaaqua-manganese(II) bis-{[N-(3-meth-oxy-2-oxidobenzyl-idene)glycylglycinato]copper(II)} hexa-hydrate.

Project description:The ligand N-(2-hydr-oxy-3-methoxy-benzyl-idene)glycylglycine (H(3)L), a Schiff base derived from glycylglycine and 3-methoxy-salicylaldehyde, was used in the synthesis of a new organic-inorganic coordination complex, [Mn(H(2)O)(6)][Cu(C(12)H(11)N(2)O(5))](2)·6H(2)O. The Mn(II) atom is located on an inversion center and is coordinated to six water mol-ecules in a slightly distorted octa-hedral geometry. The Cu(II) atom is chelated by the tetra-dentate Schiff base ligand in a distorted CuN(2)O(2) square-planar coordination. In the crystal structure, the complex [Mn(H(2)O)(6)](2+) cations and the [CuL](-) anions are arranged in columns parallel to the a axis and are held together by O-H⋯O hydrogen bonding. Additional hydrogen bonds of the same type further link the columns into a three-dimensional network.

| S-EPMC2979099 | biostudies-literature

Hexaaqua-cobalt(II) bis-{[N-(4-meth-oxy-2-oxidobenzyl-idene)glycyl-glycinato]copper(II)} hexa-hydrate.

Project description:In the crystal structure of the title compound, [Co(H(2)O)(6)][Cu(C(12)H(11)N(2)O(5))](2)·6H(2)O, the Co(II) atom is located on an inversion center and coordinated by six water mol-ecules in a slightly distorted octa-hedral geometry. The Cu(II) atom is chelated by the Schiff base ligand in a distorted CuN(2)O(2) square-planar geometry. An extensive O-H?O hydrogen-bonding network is present in the crystal structure.

| S-EPMC2971010 | biostudies-literature

Diaqua-bis-{1-[(1H-benzimidazol-2-yl)meth-yl]-1H-imidazole-κN(3)}dichlorido-cadmium hexa-hydrate.

Project description:In the title complex, [CdCl(2)(C(11)H(10)N(4))(2)(H(2)O)(2)]·6H(2)O, the Cd(II) atom is located on a twofold rotation axis and is coordinated by two N atoms from two 1-[(1H-benzimidazol-2-yl)meth-yl]-1H-imidazole ligands and two water O atoms in equatorial positions and by two Cl atoms in axial positions, leading to an elongated octa-hedral environment. The two coordinating and two of the lattice water mol-ecules are also located on twofold rotation axes. In the crystal, complex mol-ecules and solvent water mol-ecules are linked through a complex inter-molecular N-H⋯O, O-H⋯N, O-H⋯O and O-H⋯Cl hydrogen-bonding scheme into a three-dimensional network.

| S-EPMC3379093 | biostudies-literature

Hexaaqua-magnesium(II) bis-{[N-(4-meth-oxy-2-oxidobenzyl-idene)glycyl-glycinato(3-)]cuprate(II)} hexa-hydrate.

Project description:In the title complex, [Mg(H(2)O)(6)][Cu(C(12)H(11)N(2)O(5))](2)·6H(2)O, the Cu(II) atoms lie at the center of the square plane of triple negatively charged O,N,N',O'-tetra-dentate Schiff base ligands, which are coordinated by one phenolate O atom, one imine N atom, one deprotonated amide N atom and one carboxyl-ate O atom. The Mg(II) center, which sits on an inversion center, is coordinated by six aqua ligands and exhibits a slightly distorted octa-hedral conformation. The asymmetric unit consists of an [N-(4-meth-oxy-2-oxidobenzyl-idene)glycyl-glycinato]cuprate(II) anion, one half of an [Mg(H(2)O)(6)](2+) cation and three free water mol-ecules. The cations and anions form columns by O-H?O hydrogen bonds.

| S-EPMC2971438 | biostudies-literature

Bis[hexa-amminecobalt(III)] penta-chloride nitrate.

Project description:The title compound, [Co(NH(3))(6)](2)Cl(5)(NO(3)), was obtained under hydro-thermal conditions. The asymmetric unit contains three Co(3+) ions, one lying on an inversion center and the other two located at 2/m positions. All Co(3+) ions are six-coordinated by NH(3) mol-ecules, forming [Co(NH(3))(6)](3+) octahedra, with Co-N distances in the range 1.945?(4)-1.967?(3)?Å. The nitrate N atom and one of the O atoms lie at a mirror plane. Among the Cl(-) anions, one lies in a general position, one on a twofold axis and two on a mirror plane. N-H?O and N-H?Cl hydrogen bonds link the cations and anions into a three-dimensional network.

| S-EPMC3379055 | biostudies-literature

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