scholarly journals Crystal Structure of [Bis(L-Alaninato)Diaqua]Nickel(II) Dihydrate

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Awni Khatib ◽  
Fathi Aqra ◽  
David Deamer ◽  
Allen Oliver
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Potassium Hydroxide ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Gauche Conformation ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The title complex, [Ni, has been prepared from nickel(II) chloride in aqueous solution by adding L-alanine and potassium hydroxide. It has been crystallized from aqueous solution, and its structure was determined by X-ray structure analysis. The nickel(II) ion adopts distorted octahedral coordination geometry with two bidentate L-alanine molecules and two water molecules. The complex is neutral and dihydrated. The crystal structure shows the hydrogen bonding between water and amide hydrogens within the lattice, and each fragment of the complex contains two water molecules as hydrated water. The L-alaninato ligand skeleton of the compound adopts the most stable trans-III configuration in the solid state. The alternating two five-membered chelate rings are in the stable gauche conformation.

scholarly journals [BIS(D-ALANINATO)DIAQUA)NICKEL(II) DIHYDRATE: PREPARATION AND CRYSTAL STRUCTURE

2008 ◽  
Vol 16 (16) ◽  
pp. 23-39
Author(s):  
Khatib Awni ◽  
Fatbi Aqrn ◽  
David Deamer ◽  
Allen Oliver
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Potassium Hydroxide ◽  
Title Complex ◽  
Water Molecules ◽  
Coordination Geometry ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The title complex of formula [Ni(NH2CH3CHCOO)2(H20)2].2H2O has been prepared from nickel(II) chloride in an aqueous solution by adding D-alanine and potassium hydroxide. It has beett crystallized from an aqueous solution and its structure was determined by X-ray structure analysis. The nickel(II) atom adopts distorted octahedral coordination geometry with two bidentate alanine molecules and two water molecules. The complex is neutral and dihydrated. The network crystal structure shows hydrogen bonding between water and amide hydrogens within the lattice, and each fragment of the complex contains two water molecules as hydrated water.

scholarly journals Crystal structure of (2-amino-7-methyl-4-oxidopteridine-6-carboxylato-κ3O4,N5,O6)aqua(1,10-phenanthroline-κ2N,N′)zinc trihydrate

2015 ◽  
Vol 71 (9) ◽  
pp. m162-m163
Author(s):  
Siddhartha S. Baisya ◽  
Baidyanath Ghosh ◽  
Parag S. Roy
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Carboxylate Ligand ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Complex Molecules ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

In the title compound, [Zn(C8H5N5O3)(C12H8N2)(H2O)]·3H2O, a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxylate ligand, a bidentate ancillary 1,10-phenanthroline (phen) ligand and a water molecule complete a distorted octahedral coordination geometry around the ZnIIatom. The pterin ligand forms two chelate rings. The phen and pterin ring systems are nearly perpendicular [dihedral angle = 85.16 (5)°]. Classical N—H...O, O—H...N and O—H...O hydrogen bonds and weak C—H...O hydrogen bonds link the complex molecules and lattice water molecules into a three-dimensional network. π–π stacking contacts are observed as well, with centroid-to-centroid distances of 3.5679 (14), 3.7004 (14), 3.6641 (15), 3.6974 (13) and 3.3412 (12) Å.

scholarly journals Diaquabis[4-(dimethylamino)pyridine-κN 1]bis[2-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)acetato-κO 1]cobalt(II)

IUCrData ◽  
2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Naouel Makouf ◽  
Aziza Chouiter ◽  
Henia Bouzidi Mousser ◽  
Amel Djedouani ◽  
Solenne Fleutot ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Supramolecular Structure ◽  
Title Complex ◽  
Water Molecules ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Coordination Water

In the mononuclear title complex, [Co(C10H6NO4)2(C7H10N2)2(H2O)2], the CoII ion is located on an inversion centre and has a distorted octahedral coordination geometry of type CoN2O4 by two N atoms from the two 4-(dimethylamino)pyridine (DMAP) ligands, two carboxylate O atoms from the two deprotonated N-phthaloylglycine (Nphgly) ligands [systematic name: 2-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)acetate] and two coordination water molecules. In the crystal, O—H...O, C—H...O hydrogen bonds and π–π stacking interactions link the molecules into the supramolecular structure.

scholarly journals [2,6-Difluoro-3-(pyridin-2-yl-κN)pyridin-4-yl-κC4](pentane-2,4-dionato-κ2O,O′)iridium(III)

2013 ◽  
Vol 69 (11) ◽  
pp. m590-m590
Author(s):  
Kaijun Luo ◽  
Chenyang Zhang ◽  
Juan Jia ◽  
Daibing Luo
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bond ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Distorted Octahedral Coordination ◽  
Hydrogen Bond Interactions ◽  
Centroid Distance ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The title compound, [Ir(C10H5F2N2)2(C5H7O2)], has a distorted octahedral coordination geometry around the IrIIIatom, retaining thecis-C,C/trans-N,Nchelate disposition in two 2,6-difluoro-3-(pyridin-2-yl-κN)pyridin-4-yl ligands which are nearly mutually perpendicular [dihedral angle = 82.75 (15)°]. The molecular structure is stabilized by weak C—H...O and C—H...F hydrogen-bond interactions. The crystal structure is stabilized by π–π stacking interactions (centroid–centroid distance = 3.951 Å).

scholarly journals Crystal structure of poly[μ-acetato-bis[μ-2-oxo-2-(quinolin-8-yl)ethanoato]trisodium]

2014 ◽  
Vol 70 (11) ◽  
pp. m385-m386
Author(s):  
Rachel L. Nicholls ◽  
Christopher M. Pask ◽  
Bao Nguyen
Keyword(s):  
Crystal Structure ◽  
Diethyl Ether ◽  
Title Compound ◽  
Octahedral Coordination ◽  
Coordination Geometry ◽  
Axis Direction ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Through Diffusion

The title compound [Na3(C11H6NO3)2(C2H3O2)]n, crystallized through diffusion of diethyl ether into methanol as needles. There are three crystallographically independent Na+cations present, each exhibiting a distorted octahedral coordination geometry, two through coordination by five O atoms and one N atom, and one through coordination by six O atoms. A series of intermolecular O...Na and N...Na contacts leads to the formation of chains along thea-axis direction.

scholarly journals Bis(4′-chloro-2,2′:6′,2′′-terpyridine-κ3 N,N′,N′′)ruthenium(II) dichloride dihydrate

2012 ◽  
Vol 68 (6) ◽  
pp. m777-m778 ◽  
Author(s):  
Ying Wang ◽  
Rui Jiao ◽  
Xiang-Lei Qiu ◽  
Jian Wang ◽  
Wei Huang
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Maximum Deviation ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Terpyridine Ligands

In the cation of the title compound, [Ru(C15H10ClN3)2]Cl2·2H2O, the metal atom exhibits a distorted octahedral coordination geometry provided by the N atoms of two tridentate terpyridine ligands. The ligands are approximately planar [maximum deviation = 0.156 (5) Å] and form a dihedral angle of 87.0 (3)°. In the crystal, the cations, anions and water molecules are linked into a three-dimensional network by C—H...Cl, C—H...O and O—H...Cl hydrogen bonds.

scholarly journals Crystal structure of bis{μ2-3-(pyridin-2-yl)-5-[(1,2,4-triazol-1-yl)methyl]-1,2,4-triazolato}bis[aquanitratocopper(II)] dihydrate

2016 ◽  
Vol 72 (4) ◽  
pp. 486-488
Author(s):  
Roman Doroschuk
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Title Complex ◽  
Coordination Geometry ◽  
Π Interactions ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The structure of the dinuclear title complex, [Cu2(C10H8N7)2(NO3)2(H2O)2]·2H2O, consists of centrosymmetric dimeric units with a copper–copper separation of 4.0408 (3) Å. The CuIIions in the dimer display a distorted octahedral coordination geometry and are bridged by two triazole rings, forming an approximately planar Cu2N4core (r.m.s. deviation = 0.049 Å). In the crystal, O—H...O, O—H...N and C—H...O hydrogen bonds and π–π interactions link the molecules into a three-dimensional network.

Das Hydrogendiarsenit-Anion HAs2O53- Darstellung und Struktur von K3HAs2O5 • 6 H2O / The Hydrogendiarsenite Anion HAs2O53- Preparation and Structure of K3HAs2O5-6 H2O

1985 ◽  
Vol 40 (12) ◽  
pp. 1622-1625 ◽  
Author(s):  
W. S. Sheldrick ◽  
H.-J. Häusler
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Hydrogen Bonds ◽  
Crystal Lattice ◽  
Water Molecules ◽  
Coordination Geometry ◽  
X Ray ◽  
Lone Pairs

Abstract K3HAs2O5-6H2O 1 has been crystallised from aqueous solution and its crystal structure established by X-ray analysis. 1 contains isolated hydrogendiarsenite anions HAs2O53-, composed of two corner-sharing ψ -AsO3-tetrahedra. The anion displays the semi-eclipsed conformation in which the lone-pairs on the As atoms take up a syn-position with respect to an As-O bond on the opposite As atom. As a result the pyramidal coordination geometry of the As atoms is considerably distorted. The HAs2O53- anions in the crystal lattice are linked via O - H ··· O hydrogen bonds into infinite chains parallel to the b-axis, which are surrounded by water molecules of crystallisation

scholarly journals Crystal structure of {2,2′-[N,N′-bis(pyridin-2-ylmethyl)cyclohexane-trans-1,2-diyldi(nitrilo)]diacetato}cobalt(III) hexafluoridophosphate

2015 ◽  
Vol 71 (4) ◽  
pp. 380-384 ◽  
Author(s):  
Craig C. McLauchlan ◽  
Daniel S. Kissel ◽  
Albert W. Herlinger
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Acetonitrile Solution ◽  
Coordination Geometry ◽  
Donor Atom ◽  
Slow Evaporation ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Monodentate Coordination

The title compound [Co(C22H26N4O4)]PF6, commonly known as [Co(bpcd)]PF6, where bpcd2−is derived from the historical ligand nameN,N′-bis(2-pyridylmethyl)-trans-1,2-diaminocyclohexane-N,N′-diacetate, crystallized by slow evaporation of a saturated acetonitrile solution in air. The cation of the hexafluoridophosphate salt has the CoIIIatom in a distorted octahedral coordination geometry provided by an N4O2donor atom set. The acetate groups, which are oriented trans with respect to each other, exhibit monodentate coordination whereas the pyridyl N atoms are coordinating in a cis configuration. The geometry of the cation is compared to the geometries of other diamino diacetate complexes with CoIII.

scholarly journals Crystal structure of poly[{μ-N,N′-bis[(pyridin-4-yl)methyl]oxalamide}-μ-oxalato-cobalt(II)]

2014 ◽  
Vol 70 (9) ◽  
pp. m307-m308
Author(s):  
Hengye Zou ◽  
Yanjuan Qi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Coordination Geometry ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
A Chain

In the polymeric title compound, [Co(C2O4)(C14H14N4O2)]n, the CoIIatom is six-coordinated by two N atoms from symmetry-related bis[(pyridin-4-yl)methyl]oxalamide (BPMO) ligands and four O atoms from two centrosymmetric oxalate anions in a distorted octahedral coordination geometry. The CoIIatoms are linked by the oxalate anions into a chain running parallel to [100]. The chains are linked by the BPMO ligands into a three-dimensional architecture. In addition, N—H...O hydrogen bonds stabilize the crystal packing.

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