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Diammonium aqua-(ethyl-ene-diamine-tetra-acetato)iron(II) trihydrate.

ABSTRACT: In the title compound, (NH(4))(2)[Fe(C(10)H(12)N(2)O(8))(H(2)O)]·3H(2)O, the Fe(II) center is in a distorted penta-gonal-bipyramidal geometry. Two carboxyl-ate O and two N atoms from the ethyl-enediaminetetra-acetate (EDTA) ion and one O atom from coordinated water comprise the equatorial plane. Two other carboxyl-ate O atoms from the EDTA ion occupy the apical sites. Both ammonium cations and all water mol-ecules function as hydrogen-bond donors, and ten N-H⋯O and nine O-H⋯O hydrogen bonds form a three-dimensional network between the complex anions, cations and the water mol-ecules.

SUBMITTER: Huang HM

PROVIDER: S-EPMC2967920 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of di-aqua-(?2-tri-ethyl-ene-tetra-minehexa-acetato)-dizinc tetra-hydrate.

Project description:The reaction of ZnO and tri-ethyl-ene-tetra-minehexaacetic acid (H6TTHA) in aqueous solution after refluxing yields the binuclear title compound, [Zn2(C18H26N4O12)(H2O)2]·4H2O. There is a centre of symmetry in the [Zn2(H2TTHA)(H2O)2] mol-ecule in the crystalline state. Both Zn(II) ions are octahedrally surrounded and bound by an N2O3 donor set from the H2TTHA(4-) anion and a water mol-ecule; the N atoms are cis and the water mol-ecule is trans to an N atom. The Zn?Zn separation is 7.562?(1)?Å. An intra-molecular C-H?O inter-action is observed and both carboxyl-ate H atoms are disordered over two adjacent sites. In the crystal, the components are linked by O-H?O and C-H?O hydrogen bonds generating a three-dimensonal network.

| S-EPMC4350722 | biostudies-literature

Redetermination of aqua-(dihydrogen ethyl-enediamine-tetra-acetato-?O,O',N,N',O'')nickel(II).

Project description:The crystal structure of the title compound, [Ni(C(10)H(14)N(2)O(8))(H(2)O)] or [Ni(H(2)edta)(H(2)O)] (H(4)edta is ethyl-ene-diamine-tetra-acetic acid), originally determined by Smith & Hoard [J. Am. Chem. Soc. (1959), 81, 556-561] has been redetermined to a significantly higher precision. The Ni(II) atom is coordinated in a distorted octa-hedral geometry by two N atoms and three O atoms from three carboxyl-ate groups of the H(2)edta(2-) ligand and by an O atom of a water mol-ecule. The complex mol-ecules are linked by inter-molecular O-H?O hydrogen bonds into layers perpendicular to [100].

| S-EPMC2979777 | biostudies-literature

?-Pyrazine-bis-[tetra-aqua-cadmium(II)] ?-pyrazine-bis-[tetra-acetato-cadmium(II)].

Project description:In the title dinuclear ionic complex, [Cd(2)(C(4)H(4)N(2))(H(2)O)(8)][Cd(2)(CH(3)CO(2))(8)(C(4)H(4)N(2))], the cation and anion are disordered equally over a site with symmetry mmm. The Cd(II) ions and the N atoms of the bridging pyrazine ligand lie on the inter-section of two crystallographic mirror planes. The C atoms of the bridging pyrazine ligand lie on one of these mirror planes, and the acetate groups and water mol-ecules lie across the inter-secting mirror planes. Each Cd(II) atom in the cation is five-coordinated by four O atoms from four water mol-ecules and one N atom from the bridging pyrazine ligand, whereas each Cd(II) in the anion is nine-coordinated by four pairs of O atoms from the bidentate acetate ligands and one N atom from the bridging pyrazine ligand. In the crystal structure, each anion is surrounded by eight nearest-neighbour cations and vice versa. The crystal structure is stabilized by ionic inter-actions as well as by C-H?O inter-actions.

| S-EPMC2961302 | biostudies-literature

N,N'-Bis(2-hydroxy-ethyl)-N,N'-[ethyl-ene-dioxy-bis(o-phenyl-enemethyl-ene)]-diammonium fumarate tetra-hydrate.

Project description:The reaction of 1,2-bis-{2-[(2-hydroxy-ethyl)amino-methyl]-phen-oxy}ethane and fumaric acid in a mixed solution in ethanol-water (1:1 v/v) yields the title compound, C(20)H(30)N(2)O(4) (2+)·C(4)H(2)O(4) (2-)·4H(2)O. In the crystal structure, the anions, cations and water mol-ecules are connected via O-H?O and N-H?O hydrogen bonds into a three-dimensional network. The fumarate anion and the N,N'-bis-(2-hydroxy-ethyl)-N,N'-[ethyl-enedioxy-bis(o-phenyl-enemethylene)]diammonium cation are located on centers of inversion, whereas the two crystallographically independent water mol-ecules occupy general positions.

| S-EPMC2959538 | biostudies-literature

[?-N,N'-Bis(2-pyridylmethyl-ene)ethane-1,2-diamine]bis-{aqua-[N,N'-bis-(2-pyridyl-methyl-ene)ethane-1,2-diamine]manganese(II)} tetra-kis(perchlorate).

Project description:The cation of the salt, [Mn(2)(C(14)H(14)N(4))(3)(H(2)O)(2)](ClO(4))(4), lies on a center of inversion, the center lying midway along the ethyl-ene chain of the bridging N,N'-bis-(2-pyridylmethyl-ene)ethane-1,2-diamine ligand. The Mn atom is chelated by two atoms N atoms of this bridging ligand, and is also coordinated by four N atoms of another ligand. The Mn atom is seven-coordinated in a penta-gonal-bipyramidal environment. The crystal structure displays inter-molecular ?-? inter-actions between adjacent pyridine rings, with a shortest centroid-centroid distance of 3.784?(3)?Å. The perchlorate is linked to the dinuclear cation by O-H?O hydrogen bonds.

| S-EPMC2983616 | biostudies-literature

(?-Methylenediphosphonato-?4 O,O':O'',O''')bis[(ethyl-ene-diamine-?2 N,N')palladium(II)] tetra-hydrate.

Project description:The title compound, [Pd2(C2H8N2)2(CH2O6P2)]·4H2O, comprises of a binuclear mol-ecule (point group symmetry 2), with a twofold rotation axis running through the central C atom of the methyl-enedi-phospho-nate (MDP) anion. The PdII atom has a square-planar coordination environment defined by the N atoms of a bidentate ethyl-enedi-amine (en) ligand and two O atoms of the bridging MDP anion. In the crystal structure, metal complexes are arranged in layers parallel (001) and are sandwiched between layers containing disordered water mol-ecules of crystallization. Extensive intra-layer hydrogen bonds of the type N-H?O in the metal complex layer and O-H?O in the water layer, as well as O-H?O hydrogen bonds between the two types of layers, lead to the formation a three-dimensional network structure. The two lattice water mol-ecules are each equally disordered over two positions.

| S-EPMC6281122 | biostudies-literature

Aqua-dipicrato(tetra-ethyl-ene glycol)gadolinium(III) picrate methanol hemisolvate.

Project description:THE ASYMMETRIC UNIT OF THE TITLE COMPOUND [SYSTEMATIC NAME: aqua-bis(2,4,6-trinitro-phenolato)(3,6,9-trioxaundecane-1,11-diol)gadolinium(III) 2,4,6-trinitro-phenolate methanol hemi-solvate], [Gd(C(6)H(2)N(3)O(7))(2)(C(8)H(18)O(5))(H(2)O)](C(6)H(2)N(3)O(7))·0.5CH(4)O, contains two crystallographically independent Gd(III) complex cations with two uncoordinated picrate anions and one methanol mol-ecule. Each Gd(III) atom has nine coordination sites occupied by five O atoms of tetra-ethyl-ene glycol as a penta-dentate ligand, one O atom of a water mol-ecule and three O atoms of the two picrate anions as bidentate and monodentate ligands. The geometry is distorted tricapped trigonal prismatic. The mean planes of the two coordinated mono- and bidentate picrate ligands to the Gd(III) center are almost perpendicular to each other, as indicated by the dihedral angles of 89.92?(8) and 86.60?(8)° in the two complex cations. The ions are arranged in a two-dimensional network parallel to the ac plane. Short O?O and N?O contacts between the nitro groups, intra-molecular C-H?O hydrogen bonds, inter-molecular O-H?O, O-H?N and C-H?O hydrogen bonds, and two ?-? inter-actions between benzene rings [centroid-centroid distances = 3.8073?(10)-3.9831?(10)?Å] are observed. The methanol solvent mol-ecule is disordered over two positions, with site-occupancy factors of ca 0.6 and 0.4.

| S-EPMC2960575 | biostudies-literature

?(3)-Dodeca-tungsto(V,VI)aluminato-?O:O':O''-tris-[aqua-bis-(ethyl-ene-diamine-?N,N')copper(II)].

Project description:The title compound, [AlCu(3)W(12)O(40)(C(2)H(8)N(2))(6)(H(2)O)(3)], was prepared under hydro-thermal conditions. The Cu(2+) ion displays an elongated octa-hedral geometry defined by one bridging O atom from the polyoxidoanion and a coordinated water mol-ecule in axial positions and four N atoms of the two chelating ethyl-enediamine (en) ligands in equatorial positions. The one-electron reduced [AlW(12)O(40)](6-) anion coordinates three [Cu(en)(H(2)O)](2+) fragments, generating a neutral tri-supported Keggin-type polyoxidometalate (POM). This tri-supported POM is located in a special position of [Formula: see text] symmetry and therefore O atoms from the central AlO(4) tetra-hedron are disordered over two sets of sites. Disorder is also observed for three other bridging O atoms of the POM. In the crystal, mol-ecules are connected via N-H?O and O-H?O hydrogen bonds, forming a three-dimensional framework.

| S-EPMC3238692 | biostudies-literature

Tetra-ethyl-ammonium bicarbonate trihydrate.

Project description:In the title compound, C(8)H(20)N(+)·CHO(3) (-)·3H(2)O, the bicarbon-ate anion, which has a small mean deviation from the plane of 0.0014?Å, fully utilises its three O and one H atom to form various O-H?O hydrogen bonds with the three water mol-ecules in the asymmetric unit, generating a hydrogen-bonded layer, which extends along (10[Formula: see text]). The tetra-ethyl-ammonium cations, as the guest species, are accommodated between every two neighboring layers, constructing a sandwich-like structure with an inter-layer distance of 7.28?Å.

| S-EPMC3213447 | biostudies-literature

Crystal structure of a two-dimensional grid-type iron(II) coordination polymer: poly[[di-aqua-tetra-?-cyanido-diargentate(I)iron(II)] trans-1,2-bis(pyridin-2-yl)ethyl-ene disolvate].

Project description:In the title compound, {[Ag2Fe(CN)4(H2O)2]·2C12H10N2} n , the asymmetric unit contains one Fe(II) cation, two water mol-ecules, two di-cyanido-argentate(I) anions and two uncoordinating 1,2-bis-(pyridin-2-yl)ethyl-ene (2,2'-bpe) mol-ecules. Each Fe(II) atom is six-coordinated in a nearly regular octa-hedral geometry by four N atoms from di-cyanido-argentate(I) bridges and two coordinating water mol-ecules. The Fe(II) atoms are bridged by di-cyanido-argentate(I) units to give a two-dimensional layer with square-grid spaces. The inter-grid spaces with inter-layer distance of 6.550?(2)?Å are occupied by 2,2'-bpe guest mol-ecules which form O-H?N hydrogen bonds to the host layers. This leads to an extended three-dimensional supra-molecular architecture. The structure of the title compound is compared with some related compounds containing di-cyanido-argentate(I) ligands and N-donor organic co-ligands.

| S-EPMC4158491 | biostudies-literature

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