Diaquabis(5-n-butylpyridine-2-carboxylato-κ2 N,O)nickel(II) dihydrate

2007 ◽  
Vol 63 (11) ◽  
pp. m2853-m2853 ◽  
Author(s):  
Liang Qin ◽  
Hai-Fu Guo ◽  
Xiang Li ◽  
De-Yun Ma ◽  
Wen-Dong Song

The metal atom of the title compound, [Ni(C10H13NO2)2(H2O)2]·2H2O, lies on an inversion center; it is N,O-chelated by the alkyl-substituted 2-pyridylcarboxylate group, and two water molecules complete the octahedral environment. The coordinated and solvent water molecules engage in hydrogen bonding with the acceptor O atom of the carboxylate group to furnish a two-dimensional network motif. Three atoms of the butyl group are disordered, with refined site occupancies of 0.681 (8):0.319 (8).

2006 ◽  
Vol 62 (4) ◽  
pp. m796-m798 ◽  
Author(s):  
Zerrin Heren ◽  
Cem Cüneyt Ersanlı ◽  
Cem Keser ◽  
Nazan Ocak Ískeleli

The crystal structure of the title compound, [Co(C6H4NO2)2(H2O)2]·2H2O, has been reinvestigated with improved precision [previous reports: Chang et al. (1972). J. Coord. Chem. 2, 31–34; Lumme et al. (1969). Suom. Kemistil. B, 42, 270]. In the title compound, the Co atom is located on an inversion center and its coordination can be described as slightly distorted octahedral, equatorially trans-coordinated by two N and O atoms of two picolinate ligands and axially coordinated by two O atoms of the water molecules. Intermolecular O—H...O and C—H...O hydrogen-bonding interactions result in the formation of an intricate three-dimensional network.


2014 ◽  
Vol 70 (3) ◽  
pp. m98-m99
Author(s):  
Olga Kovalchukova ◽  
Ali Sheikh Bostanabad ◽  
Adam Stash ◽  
Svetlana Strashnova ◽  
Igor Zyuzin

In the centrosymmetric title compound, [Ni(C7H6FN2O2)2(H2O)2], the NiIIcation is in a slightly distorted octahedral environment and is surrounded by four O atoms from the N—O groups of the organic ligands [Ni—O = 2.0179 (13) and 2.0283 (12) Å], and two water molecules [Ni—O = 2.0967 (14) Å]. TheN-(2-fluorobenzyl)-N-nitrosohydroxylaminate monoanions act as bidentate chelating ligands. In the crystal, the Ni cations in the columns are shifted in such a way that the coordinated water molecules are involved in the formation of hydrogen bonds with the O atoms of the organic species of neighbouring molecules. Thus, a two-dimensional network parallel to (100) is built up by hydrogen-bonded molecules.


2015 ◽  
Vol 71 (4) ◽  
pp. 258-261 ◽  
Author(s):  
Zu-Ping Xiao ◽  
Meng Wen ◽  
Chun-Ya Wang ◽  
Xi-He Huang

The title compound, {[Ag(C6H7AsNO3)(C18H15P)]·H2O}n, has been synthesized from the reaction of 4-aminophenylarsonic acid with silver nitrate, in aqueous ammonia, with the addition of triphenylphosphane (PPh3). The AgIcentre is four-coordinated by one amino N atom, one PPh3P atom and two arsonate O atoms, forming a severely distorted [AgNPO2] tetrahedron. Two AgI-centred tetrahedra are held together to produce a dinuclear [Ag2O2N2P2] unit by sharing an O–O edge. 4-Aminophenylarsonate (Hapa−) adopts a μ3-κ3N:O:O-tridentate coordination mode connecting two dinuclear units, resulting in a neutral [Ag(Hapa)(PPh3)]nlayer lying parallel to the (10\overline{1}) plane. The PPh3ligands are suspended on both sides of the [Ag(Hapa)(PPh3)]nlayer, displaying up and down orientations. There is anR22(8) hydrogen-bonded dimer involving two arsonate groups from two Hapa−ligands related by a centre of inversion. Additionally, there are hydrogen-bonding interactions involving the solvent water molecules and the arsonate and amine groups of the Hapa−ligands, and weak π–π stacking interactions within the [Ag(Hapa)(PPh3)]nlayer. These two-dimensional layers are further assembled by weak van der Waals interactions to form the final architecture.


2012 ◽  
Vol 68 (4) ◽  
pp. m402-m403
Author(s):  
Yun-Xia Hu ◽  
Yan Zhou ◽  
Fang-Ming Wang ◽  
Wen-Wei Zhang

The polymeric title compound, {[Co(C15H9NO4S)(H2O)3]·H2O}n, consists of chains along [001] made up from Co2+ions bridged by 10-methylphenothiazine-3,7-dicarboxylate anions. The Co2+ion, coordinated by three O atoms from two different carboxylate groups and three water molecules, displays a distorted octahedral environment. In the crystal, π–π interchain interactions, with centroid–centroid distances of 3.656 (2) and 3.669 (2) Å between the benzene rings of the ligands, assemble the chains into sheets parallel to (100). O—H...O hydrogen-bonding interactions between the coordinating water molecules and carboxylate O atoms link the sheets into a three-dimensional network.


2014 ◽  
Vol 70 (4) ◽  
pp. 396-399 ◽  
Author(s):  
Christian Neis ◽  
Kaspar Hegetschweiler

In the title monohydrated cocrystal, namely 1,3-diamino-5-azaniumyl-1,3,5-trideoxy-cis-inositol iodide–1,3,5-triamino-1,3,5-trideoxy-cis-inositol–water (1/1/1), C6H16N3O3+·I−·C6H15N3O3·H2O, the neutral 1,3,5-triamino-1,3,5-trideoxy-cis-inositol (taci) molecule and the monoprotonated 1,3-diamino-5-azaniumyl-1,3,5-trideoxy-cis-inositol cation (Htaci+) both adopt a chair conformation, with the three O atoms in axial and the three N atoms in equatorial positions. The cation, but not the neutral taci unit, exhibits intramolecular O—H...O hydrogen bonding. The entire structure is stabilized by a complex three-dimensional network of intermolecular hydrogen bonds. The neutral taci entities and the Htaci+cations are each aligned into chains along [001]. In these chains, two O—H...N interactions generate a ten-membered ring as the predominant structural motif. The rings consist of vicinal 2-amino-1-hydroxyethylene units of neighbouring molecules, which are pairedviacentres of inversion. The chains are interconnected into undulating layers parallel to theacplane, and the layers are further held together by O—H...N hydrogen bonds and additional interactions with the iodide counter-anions and solvent water molecules.


2013 ◽  
Vol 69 (11) ◽  
pp. 1311-1313
Author(s):  
Yong-Qian Lei ◽  
Guan-Hua Wang

In the title compound, [Mn(C10H6O7)(C12H10N2)(H2O)2]nor [Mn(HOABDC)(bpe)(H2O)2]n[H3OABDC is 5-(carboxymethoxy)isophthalic acid and bpe is 1,2-bis(pyridin-4-yl)ethylene], each MnIIcation is at the centre of a distorted octahedron formed by three carboxylate O atoms from three different HOABDC2−ligands, one pyridyl N atom from the terminal bpe ligand and two water molecules. The flexible oxyacetate group bound to a methylene C atom of the HOABDC2−ligand links the MnIIcentres into –Mn—O—C—O—Mn– chains, and the carboxylate group bound directly to the benzene ring extends the chains into two-dimensional layers which lie parallel to the (010) plane and present herringbone patterns. Intermolecular O—H...N and C—H...O hydrogen bonds connect the layers into a three-dimensional supramolecular structure.


2016 ◽  
Vol 72 (10) ◽  
pp. 1453-1455 ◽  
Author(s):  
Suk-Hee Moon ◽  
Donghyun Kang ◽  
Ki-Min Park

Treatment ofN,N-bis(pyridin-4-ylmethyl)cyclohexane-1,4-diamine with hydrochloric acid in ethanol led to the formation of the title salt, C18H26N42+·2Cl−·2H2O, which lies about a crystallographic inversion center at the center of the cyclohexyl ring. The asymmetric unit therefore comprises one half of theN,N-bis(pyridin-4-ylmethyl)cyclohexane-1,4-diammonium dication, a chloride anion, and a solvent water molecule. In the dication, the twotrans-(4-pyridine)–CH2–NH2– moieties occupy equatorial sites at the 1- and 4-positions of the central cyclohexyl ring, which is in a chair conformation. The terminal pyridine ring is tilted by 27.98 (5)° with respect to the mean plane of the central cyclohexyl moiety (r.m.s. deviation = 0.2379 Å). In the crystal, dications, anions, and solvent water molecules are connectedviaN/C/O—H...Cl and N—H...O hydrogen bonds together with C—H...π interactions, forming a three-dimensional network.


1996 ◽  
Vol 49 (7) ◽  
pp. 835 ◽  
Author(s):  
XM Chen ◽  
ML Tong ◽  
YJ Luo ◽  
ZN Chen

An example of a 4,4'-bipyridine ( γbpy ) clathrate in its copper(II) complex has been established. The compound, [Cu( γbpy )(H2O)2(ClO4)2]n.( γbpy )n, crystallizes in the monoclinic space group C2/c with a 16.651(3), b 11.089(2), c 14.360(3) Ǻ, β 116.45(3)°, V 2373.9(8)Ǻ3. The crystal structure comprises γbpy -bridged linear polymeric [Cu( γbpy )(H2O)2(ClO4)2]n chains, where the copper atom, located on a crystallographic twofold axis, is coordinated in an elongated octahedral environment by two nitrogen atoms of the bridging γbpy ligands (Cu-N 1.998(4)Ǻ) and two water molecules (Cu-O 1.968(3)Ǻ) at the equatorial positions, and two perchlorate oxygen atoms at the axial positions (Cu-O 2.414(4)Ǻ). The chains are interconnected by hydrogen bonds between the aqua ligands and the uncoordinated perchlorate oxygen atoms to form two-dimensional layers with cavities each enclosing a γbpy molecule. Hydrogen bonding between the aqua ligands and the nitrogen atoms of the solvate γbpy molecules further extends the structure into a three-dimensional network in the solid.


2012 ◽  
Vol 68 (8) ◽  
pp. o2456-o2456 ◽  
Author(s):  
Charles D. Swor ◽  
Bryan P. Nell ◽  
Lev N. Zakharov ◽  
David R. Tyler

The title compound, C14H16O4P2·2H2O, possesses a crystallographic inversion center where two –P(=O)(OH)(C6H5) groups are joined togetherviatwo –CH2groups. In the crystal, the acid molecules are linked by the water moleculesviaO—H...O hydrogen bonds, leading to the formation of a two-dimensional network lying parallel to (101).


Author(s):  
Olga M. Nazarenko ◽  
Eduard B. Rusanov ◽  
Alexander N. Chernega ◽  
Konstantin V. Domasevitch

In poly[[bis(μ-4,4′-bi-1H-pyrazole-κ2N2:N2′)bis(3-carboxyadamantane-1-carboxylato-κO1)cobalt(II)] dihydrate], {[Co(C12H15O4)2(C6H6N4)2]·2H2O}n, (I), the Co2+cation lies on an inversion centre and the 4,4′-bipyrazole (4,4′-bpz) ligands are also situated across centres of inversion. In its non-isomorphous cadmium analogue, {[Cd(C12H15O4)2(C6H6N4)2]·2H2O}n, (II), the Cd2+cation lies on a twofold axis. In both compounds, the metal cations adopt an octahedral coordination, with four pyrazole N atoms in the equatorial plane [Co—N = 2.156 (2) and 2.162 (2) Å; Cd—N = 2.298 (2) and 2.321 (2) Å] and two axial carboxylate O atoms [Co—O = 2.1547 (18) Å and Cd—O = 2.347 (2) Å]. In both structures, interligand hydrogen bonding [N...O = 2.682 (3)–2.819 (3) Å] is essential for stabilization of theMN4O2environment with its unusually high (for bulky adamantanecarboxylates) number of coordinatedN-donor co-ligands. The compounds adopt two-dimensional coordination connectivities and exist as square-grid [M(4,4′-bpz)2]nnetworks accommodating monodentate carboxylate ligands. The interlayer linkage is provided by hydrogen bonds from the carboxylic acid groupsviathe solvent water molecules [O...O = 2.565 (3) and 2.616 (3) Å] to the carboxylate groups in the next layer [O...O = 2.717 (3)–2.841 (3) Å], thereby extending the structures in the third dimension.


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