scholarly journals Poly[diaquadi-μ-hydroxido-κ4O:O-dinitrato-κ4O:O′-bis[3-(pyridin-4-yl-κN)-5-(pyridin-3-yl)-1,2,4-oxadiazole]dicopper(II)]

2012 ◽  
Vol 68 (4) ◽  
pp. m422-m423 ◽  
Author(s):  
Longfei Wu ◽  
Linxia Huang ◽  
Mouhai Shu

The title compound, [Cu2(NO3)2(OH)2(C12H8N4O)2(H2O)2]n, consists of a neutral polymeric CuIIcomplex in which each CuIIatom has a distorted octahedral geometry defined by a pyridyl N atom from a 3-(pyridin-3-yl)-5-(pyridin-4-yl)-1,2,4-oxadiazole ligand and five O atoms from a water molecule, two nitrates and two hydroxides. Two CuIIions are bridged by two hydroxide anions resulting in a Cu2O2loop, located across an inversion center and connected by the nitrate anions into a broad two-dimensional polymeric structure parallel to (100). In the crystal, there are O—H...O hydrogen bonds between the coodinated water molecule and the nitrate and hydroxide, and between the hydroxide and the nitrate. Intermolecular π–π interactions are present between pyridine rings in adjacent two-dimensional structures, with a centroid–centroid distance of 3.582 (2) Å.

2013 ◽  
Vol 69 (2) ◽  
pp. m89-m89 ◽  
Author(s):  
Xiao-Hui Deng ◽  
Qi-Jun Nie ◽  
Feng-Juan Zhu

In the title compound, [Ni(C6H12N4O3)2](NO3)2·4H2O, the NiIIcation is located on an inversion center and isN,O,O′-chelated by two nitrilotris(acetamide) molecules in a distorted octahedral geometry. The complex cations, nitrate anions and lattice water molecules are connected by O—H...O and N—H...O hydrogen bonds, forming a three-dimensional supramolecular structure.


2012 ◽  
Vol 68 (4) ◽  
pp. m411-m412
Author(s):  
Huimin Wang ◽  
Xiaojun Gu ◽  
Bingbing Zhang ◽  
Haiquan Su

The CoIIIatom in the title compound, [Co(C12H6N2O4)(C12H7N2O4)], is six-coordinated in a distorted octahedral geometry by four N atoms and two O atoms of the chelating 2,2′-bipyridine-6,6′-dicarboxylate and 6′-carboxy-2,2′-bipyridine-6-carboxylate ligands. Intermolecular O—H...O hydrogen bonds and face-to-face π-stacking interactions [centroid–centroid distance = 3.6352 (16) Å] between inversion-related pyridine rings link adjacent mononuclear units into a two-dimensional supramolecular structure, and several intermolecular C—H...O interactions are also observed.


2014 ◽  
Vol 70 (2) ◽  
pp. m63-m64 ◽  
Author(s):  
Akiko Himegi ◽  
Satoshi Kawata

In the title compound, (C12H25NH3)2[Cu(C6Cl2O4)2(C2H5OH)2], the CuIIatom lies on a crystallographic inversion center and is coordinated in a distorted octahedral geometry by four O atoms of two chloranilate ligands and two O atoms of two ethanol molecules which aretransto each other in the axial positions. In the crystal, the CuIImononuclear dianions are linked by O—H...O hydrogen bonds into a tape along thea-axis direction. The tapes are linked through N—H...O hydrogen bonds between the dianion and then-dodecylammonium cation, forming a two-dimensional network parallel to theabplane.


2012 ◽  
Vol 68 (8) ◽  
pp. m1132-m1132
Author(s):  
Jun Wang ◽  
Chuntao Dai ◽  
Jianhua Nie

In the title compound, [Cu(C11H8NO3)(CH3COO)(C10H8N2)]n, the CuIIion is six-coordinated by two N atoms from two 4,4′-bipyridine ligands, four O atoms from one acetate ligand, one 2-(4-oxo-1,4-dihydroquinolin-1-yl)acetate ligand and one water molecule in a distorted octahedral geometry. The 4,4′-bipyridine ligands interconnect [Cu(C11H8NO3)(CH3COO)] units, giving rise to a chain along [010]. These chains are further linked to each other by O—H...O hydrogen bonds, leading to a two-dimensional supramolecular network parallel to (100).


2012 ◽  
Vol 68 (6) ◽  
pp. m829-m829
Author(s):  
Lining Yang ◽  
Yanxiang Zhi ◽  
Jiahui Hei ◽  
Yanqing Miao

The asymmetric unit of the title compound, [Mn(C6H6N4)2(H2O)2](C8H4O4), contains one-half each of the centrosymmetric cation and anion. The MnII atom is coordinated by four N atoms [Mn—N = 2.2168 (14) and 2.2407 (14) Å] from two 2,2′-biimidazole ligands and two water molecules [Mn—O = 2.2521 (14) Å] in a distorted octahedral geometry. Intermolecular N—H...O and O—H...O hydrogen bonds consolidate the crystal packing, which also exhibits π–π interactions between five-membered rings, with a centroid–centroid distance of 3.409 (2) Å.


2009 ◽  
Vol 65 (6) ◽  
pp. m633-m633 ◽  
Author(s):  
Jian-Hong Bi

In the title compound, [Co(C10H12N2O)2(H2O)2](NO3)2·2H2O, the CoIIion, located on an inversion center, istrans-coordinated by twoN,O-bidentate chelating (E)-3-(dimethylamino)-1-(2-pyridyl)prop-2-en-1-one ligands and by two water molecules in a slightly distorted octahedral geometry. Intermolecular O—H...O hydrogen bonds link the cations, anions and water molecules into layers parallel to theacplane. The crystal packing also exhibits weak intermolecular C—H...O hydrogen bonds.


Author(s):  
Muzzaffar A. Bhat ◽  
Shalini Jain ◽  
Sanjay K. Srivastava ◽  
Ray J. Butcher ◽  
Jan Wikaira

In the title compound, [Na(C7H14NOS2)(H2O)2]n, the NaIcation is coordinated by five O atoms [Na—O = 2.3142 (11)–2.4677 (10) Å] from three aqua and twoN-butyl-N-(2-hydroxyethyl)dithiocarbamate (L) ligands and one S atom [Na—S = 3.0074 (6) Å] from a thirdLligand in a highly distorted octahedral geometry. Two aqua ligands related by an inversion center bridge two NaIcations, and eachLligand coordinates three NaIcations, leading to a layered arrangement aligned parallel to thebcplane. Intermolecular O—H...S hydrogen bonds are observed in the inner part of each polymeric layer; these are packed along theaaxis and held together by weak van der Waals forces.


2014 ◽  
Vol 70 (9) ◽  
pp. m324-m325
Author(s):  
Hengye Zou ◽  
Yanjuan Qi

In the title compound, [Ni(C12H6O4)(C21H18N4)(H2O)]n, the NiIIcation is coordinated by three carboxylate O atoms of two naphthalene-1,4-dicarboxylate anions, one water molecule and two N atoms of two 1,1′-(9,9-dimethyl-9H-fluoren-2,7-diyl)di-1H-imidazole (DFDI) ligands, giving rise to a slightly distorted octahedral geometry. The NiIIions are linked by the DFDI ligands into chains, which are further connected by the carboxylate anions into double chains that elongate in the theb-axis direction. These double chains are linked by centrosymmetric pairs of O—H...O hydrogen bonds into layers parallel to (10-1). The asymmetric unit consists of one crystallographically independent NiIIcation, one carboxylate and one DFDI ligand, as well as of one water molecule, all of them located in general positions.


2007 ◽  
Vol 63 (11) ◽  
pp. m2639-m2639 ◽  
Author(s):  
Jordan O. Lerach ◽  
Matthias Zeller ◽  
Brian D. Leskiw

The Co atom of the title compound, [Co(C8H10F3O2)2(CH3OH)2], which is located on a crystallographic inversion center, exhibits a distorted octahedral geometry. The bidentate acetylacetonate-like ligands are in a trans arrangement. The plane through the acetylacetonate unit is tilted with respect to the CoO4 plane by 17.41 (7)°, which is in the same range as observed for similar Co(acac)2OR 2 derivatives. Via the methanol hydroxy groups, each molecule participates in two pairs of intermolecular hydrogen bonds that create a network of hydrogen-bonded chains along the direction of the a axis.


2014 ◽  
Vol 70 (2) ◽  
pp. m30-m31
Author(s):  
Ruthairat Nimthong ◽  
Nattakunya Thepsena ◽  
Walailak Puetpaiboon ◽  
Yupa Wattanakanjana

The dinuclear title compound, [Ag2(C14H22N4O2)(C18H15P)2(H2O)2](NO3)2, lies across an inversion center and consists of two [Ag(H2O)(PPh3)] units bridged by a bis(cyclohexanone)oxalydihydrazone ligand. The charge-balance is supplied by two nitrate anions. The symmetry-unique AgIion is in a distorted tetrahedral geometry coordinated by a P atom from a triphenylphosphane ligand, an O atom from a water molecule and a bis(cyclohexanone)oxalydihydrazone ligand bidentate chelating through the O atom and one of N atoms. In the crystal, O—H...O and N—H...O hydrogen bonds link the components, forming chains along theb-axis direction. These chains are connected through weak C—H...O hydrogen bonds, leading to the formation of a two-dimensional supramolecular network parallel to (001).


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