catena-Poly[[aqua(N,N-dimethylformamide-κO)strontium(II)]-bis[μ-2-(4-carboxyphenoxy)propionato-κ3 O,O′:O′]]

2007 ◽  
Vol 63 (11) ◽  
pp. m2849-m2849 ◽  
Author(s):  
Li-Li Kong ◽  
Shan Gao ◽  
Li-Hua Huo ◽  
Seik Weng Ng

In the crystal structure of the polymeric title compound, [Sr(C10H9O5)2(C3H7NO)(H2O)] n , the SrII atom is O,O′-chelated by the carboxylate end of two 2-(4-carboxyphenoxy)propionate monoanions, and is coordinated by a water molecule and a dimethylformamide (DMF) molecule. It also interacts with the carboxylate O atom of two adjacent monoanions; these bonds give rise to a zigzag chain along the a axis. Meanwhile, the carboxyl –CO2H end of the anion interacts with an acceptor site [O...O = 2.629 (4) Å]; this interaction and hydrogen bonding involving the water molecule [O...O = 3.191 (5) Å] give rise to a three-dimensional network. The eight coordinating O atoms comprise an irregular polyhedron around the metal atom. The Sr atom, the water O atom, and the N and O atoms of the DMF molecule lie on a special position of site symmetry m; the DMF molecule is disordered about the mirror plane.

2007 ◽  
Vol 63 (11) ◽  
pp. m2850-m2850 ◽  
Author(s):  
Li-Li Kong ◽  
Shan Gao ◽  
Li-Hua Huo ◽  
Seik Weng Ng

In the crystal structure of the polymeric title compound, {[Ba(C10H9O5)2(H2O)2]·2H2O} n , the BaII atom is O,O′-chelated by the carboxylate end of two 2-(4-carboxyphenoxy)propionate monoanions, and is coordinated by two water molecules. It also interacts with the carboxylate O atom of two adjacent monoanions; these bonds give rise to a chain structure along the c axis. Meanwhile, the carboxyl –CO2H end of the anion interacts with an acceptor site [O...O = 2.608 (2) Å]; this interaction and hydrogen bonding involving the coordinated and lattice water molecules give rise to a three-dimensional network. The eight coordinating O atoms comprise a square-antiprism around the metal atom, which lies on a special position of site symmetry 2.


Author(s):  
Yukiko Yamaguchi-Terasaki ◽  
Takashi Fujihara ◽  
Akira Nagasawa ◽  
Sumio Kaizaki

In the neutral complex molecule of the title compound,fac-[CrCl3(tpa)] [tpa is tris(pyridin-2-yl)amine; C15H12N4], the CrIIIion is bonded to three N atoms that are constrained to afacialarrangement by the tpa ligand and by three chloride ligands, leading to a distorted octahedral coordination sphere. The average Cr—N and Cr—Cl bond lengths are 2.086 (5) and 2.296 (4) Å, respectively. The complex molecule is located on a mirror plane. In the crystal, a combination of C—H...N and C—H...Cl hydrogen-bonding interactions connect the molecules into a three-dimensional network.


2014 ◽  
Vol 70 (11) ◽  
pp. 1021-1024
Author(s):  
Ljiljana Karanović ◽  
Dejan Poleti ◽  
Tamara Đorđević

A new organic–inorganic hybrid compound,catena-poly[bis(1-ethyl-3-methylimidazolium) [μ5-bromido-tri-μ3-bromido-tri-μ2-bromido-pentacuprate(I)]], {(C6H11N2)2[Cu5Br7]}n, has been obtained under ionothermal conditions from a reaction mixture containing Ba(OH)2·8H2O, Cu(OH)2·2H2O, As2O5, 1-ethyl-3-methylimidazolium bromide and distilled water. The crystal structure consists of complex [Cu5Br7]2−anions arranged in sinusoidal {[Cu5Br7]2−}nchains running along theaaxis, which are surrounded by 1-ethyl-3-methylimidazolium cations. Three of the five unique Br atoms and one of the three CuIatoms occupy special positions with half-occupancy (a mirror plane perpendicular to thebaxis, site symmetrym). The CuIions are in a distorted tetrahedral coordination environment, with four Br atoms at distances ranging from 2.3667 (10) to 2.6197 (13) Å, and an outlier at 3.0283 (12) Å, exceptionally elongated and with a small contribution to the bond-valence sum of only 6.7%. Short C—H...Br contacts build up a three-dimensional network. The Cu...Cu distances within the chain range from 2.8390 (12) to 3.0805 (17) Å, indicating the existence of weak CuI...CuIcuprophilic interactions.


Author(s):  
Dohyun Moon ◽  
Jong-Ha Choi

The asymmetric unit of the hydrated title salt, (C10H28N4)[Cr2O7]2·H2O [C10H28N4= H4(cyclam) = 1,4,8,11-tetraazoniacyclotetradecane], contains two half-cations (both completed by crystallographic inversion symmetry), two dichromate anions and one water molecule. The two [CrO7]2−anions exhibit a nearly staggered conformation, with bridging angles of 133.37 (11) and 136.28 (12)°. The distortions of the dichromate anions are due to their participation in hydrogen-bonding interactions with the water molecule and the cations. Intermolecular hydrogen bonds involving the cyclam N—H groups and water O—H groups as donor groups, and the O atoms of the dichromate anions as acceptor groups give rise to a three-dimensional network.


Author(s):  
Graham Smith ◽  
Urs D. Wermuth

The structures of the alkali metal (K, Rb and Cs) complex salts with 4-aminophenylarsonic acid (p-arsanilic acid) manifest an isotypic series with the general formula [M2(C6H7AsNO3)2(H2O)3], withM= K {poly[di-μ3-4-aminophenylarsonato-tri-μ2-aqua-dipotassium], [K2(C6H7AsNO3)2(H2O)3], (I)}, Rb {poly[di-μ3-4-aminophenylarsonato-tri-μ2-aqua-dirubidium], [Rb2(C6H7AsNO3)2(H2O)3], (II)}, and Cs {poly[di-μ3-4-aminophenylarsonato-tri-μ2-aqua-dirubidium], [Cs2(C6H7AsNO3)2(H2O)3], (III)}, in which the repeating structural units lie across crystallographic mirror planes containing two independent and different metal cations and a bridging water molecule, with the two hydrogenp-arsanilate ligands and the second water molecule lying outside the mirror plane. The bonding about the two metal cations in all complexes is similar, one five-coordinate, the other progressing from five-coordinate in (I) to eight-coordinate in both (II) and (III), with overallM—O bond-length ranges of 2.694 (5)–3.009 (7) (K), 2.818 (4)–3.246 (4) (Rb) and 2.961 (9)–3.400 (10) Å (Cs). The additional three bonds in (II) and (III) are the result of inter-metal bridging through the water ligands. Two-dimensional coordination polymeric structures with the layers lying parallel to (100) are generated through a number of bridging bonds involving the water molecules (including hydrogen-bonding interactions), as well as through the arsanilate O atoms. These layers are linked across [100] through amine N—H...O hydrogen bonds to arsonate and water O-atom acceptors, giving overall three-dimensional network structures.


Author(s):  
Mouhamadou Birame Diop ◽  
Libasse Diop ◽  
Laurent Plasseraud ◽  
Thierry Maris

In the structure of the hydrated title salt, (C4H7N2)2[Sn(C2O4)2(OH)2]·H2O, the asymmetric unit comprises one stannate(IV) dianion, two organic cations and one water molecule of crystallization. The [Sn(C2O4)2(OH)2]2−dianion consists of an SnIVatom chelated by two oxalate anions and coordinated by two OH−ligands in acisoctahedral arrangement. Neighbouring anions are connected through O—H...O hydrogen bonds between hydroxide groups and non-coordinating oxalate O atoms into layers expanding parallel to (100). In addition, cations and anions are linked through N—H...O hydrogen bonds, and the water molecule bridges two anions with two O—H...O hydrogen bonds and is also the acceptor of an N—H...O hydrogen bond with one of the cations. Weak C—H...O hydrogen bonds are also observed. The intricate hydrogen bonding leads to the formation of a three-dimensional network.


2006 ◽  
Vol 62 (7) ◽  
pp. m1719-m1721 ◽  
Author(s):  
Luiz Everson da Silva ◽  
Antonio Carlos Joussef ◽  
Sabine Foro ◽  
Boris Schmidt

In the title compound, [Zn(C15H10FN2O2 S)2]·0.5H2O, the Zn atom has a distorted tetrahedral geometry, formed by the N atoms of the quinoline and the sulfonamide groups. The water molecule occupies a special position on a twofold axis. Intermolecular C—H...O hydrogen bonds to the sulfonyl O atoms link the molecules into a three-dimensional network.


IUCrData ◽  
2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Ioannis Tiritiris ◽  
Thomas Schleid

In the crystal structure of the hydrated double salt, Cs+·[N(CH3)4]+·[B12H12]2−·H2O, the asymmetric unit contains one caesium and one tetramethylammonium cation, one dodecahydrido-closo-dodecaborate anion and one water molecule. The Cs+cation is coordinated tetrahedrally by four [B12H12]2−clusters, with the water molecule completing the coordination sphere. The tetramethylammonium cation is surrounded distorted octahedrally by six [B12H12]2−anions. The crystal structure is stabilized by a three-dimensional network of O—H...H—B and C—H...H—B dihydrogen bonds.


2015 ◽  
Vol 71 (12) ◽  
pp. m275-m276 ◽  
Author(s):  
Waqas Sethi ◽  
Heini V. Johannesen ◽  
Thorbjørn J. Morsing ◽  
Stergios Piligkos ◽  
Høgni Weihe

The title compound, [Co2(L)2]3+·3NO3−[whereL= CH3C(CH2NHCH2CH2OH1/2)3], has been synthesized from the ligand 1,1,1-tris(2-hydroxyethylaminomethyl)ethane. The cobalt(III) dimer has an interesting and uncommon O—H...O hydrogen-bonding motif with the three bridging hydroxy H atoms each being equally disordered over two positions. In the dimeric trication, the octahedrally coordinated CoIIIatoms and the capping C atoms lie on a threefold rotation axis. The N atoms of two crystallographically independent nitrate anions also lie on threefold rotation axes. N—H...O hydrogen bonding between the complex cations and nitrate anions leads to the formation of a three-dimensional network structure. The compound is a racemic conglomerate of crystals containing either D or L molecules. The crystal used for this study is a D crystal.


Author(s):  
Graham Smith ◽  
Urs D. Wermuth

In the structure of the brucinium salt of 4-aminophenylarsonic acid (p-arsanilic acid), systematically 2,3-dimethoxy-10-oxostrychnidinium 4-aminophenylarsonate tetrahydrate, (C23H27N2O4)[As(C6H7N)O2(OH)]·4H2O, the brucinium cations form the characteristic undulating and overlapping head-to-tail layered brucine substructures packed along [010]. The arsanilate anions and the water molecules of solvation are accommodated between the layers and are linked to them through a primary cation N—H...O(anion) hydrogen bond, as well as through water O—H...O hydrogen bonds to brucinium and arsanilate ions as well as bridging water O-atom acceptors, giving an overall three-dimensional network structure.


Sign in / Sign up

Export Citation Format

Share Document