scholarly journals Lithium diaquanickel(II)catena-borodiphosphate(V) monohydrate

2009 ◽  
Vol 65 (6) ◽  
pp. i42-i42 ◽  
Author(s):  
Juan Zheng ◽  
Aiyun Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecules ◽  
Hydrothermal Conditions ◽  
Rotation Axes ◽  
Oxygen Coordination ◽  
Distorted Octahedral ◽  
Octahedral Oxygen

The title borophosphate LiNi(H2O)2[BP2O8]·H2O was synthesized under hydrothermal conditions. The crystal structure is isotypic with the Mg analogue and features helical [BP2O8]3−borophosphate ribbons, constructed by BO4(2 symmetry) and PO4tetrahedra. The borate groups share all their oxygen apices with adjacent phosphate tetrahedra. The ribbons are connectedviaNi2+cations that are located on twofold rotation axes. The cations have a slightly distorted octahedral oxygen coordination by four O atoms from the anion and by two water molecules. The voids within the helices are occupied by Li+cations, likewise located on twofold rotation axes, in an irregular environment of five O atoms. The structure is stabilized by O—H...O hydrogen bonds between coordinated or uncoordinated water molecules and O atoms that are part of the helices.

scholarly journals Crystal structure ofcatena-poly[[[tetraaquairon(II)]-trans-μ-1,2-bis(pyridin-4-yl)ethene-κ2N:N′] bis(p-toluenesulfonate) methanol disolvate]

2017 ◽  
Vol 73 (12) ◽  
pp. 1977-1980
Author(s):  
Volodymyr M. Hiiuk ◽  
Diana D. Barakhty ◽  
Sergiu Shova ◽  
Ruslan A. Polunin ◽  
Il'ya A. Gural'skiy
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Supramolecular Network ◽  
Polymeric Complex ◽  
Distorted Octahedral ◽  
Polymeric Chains ◽  
Coordinated Water

In the title polymeric complex, {[Fe(C12H10N2)2(H2O)4](CH3C6H4SO3)2·2CH3OH}n, the FeIIcation, located on an inversion centre, is coordinated by four water molecules in the equatorial positions and two 1,2-bis(pyridin-4-yl)ethene molecules in the axial positions. This results in a distorted octahedral geometry for the [N2O4] coordination polyhedron. The 1,2-bis(pyridin-4-yl)ethene molecules bridge the FeIIcations, forming polymeric chains running along thea-axis direction. Stabilization of the crystal structure is provided by O—H...O hydrogen bonds; these are formed by coordinated water molecules as donors towards the O atoms of the methanol molecules and tosylate anions as acceptors of protons, leading to the formation of a three-dimensional supramolecular network. Weak C—H...O hydrogen bonds are also observed in the crystal.

Multianvil High-Pressure Synthesis And Crystal Structure Of β-YbBO3

2001 ◽  
Vol 56 (8) ◽  
pp. 697-703 ◽  
Author(s):  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Title Compound ◽  
Variable Parameters ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Oxygen Coordination ◽  
Distorted Octahedral ◽  
Pressure Synthesis ◽  
Octahedral Oxygen

β-Ytterbium borate (β-YbBO3) was synthesized under high-pressure in a Walker-type multianvil apparatus at 2.2 GPa and 1400 °C. The title-compound crystallizes in the trigonal calcite structure, space group R3̄̄c. Single crystal X-ray data yielded a = 492.1(2), c = 1630.5(9) pm, wR2 = 0.0344 for 165 F2 values and 11 variable parameters. Within the trigonal planar BO3 groups the B-O distance is 137.8(4) pm. The ytterbium atoms have a slightly distorted octahedral oxygen coordination (Yb-O: 224.4(2) pm)

scholarly journals Crystal structure of dimanganese(II) zinc bis[orthophosphate(V)] monohydrate

2015 ◽  
Vol 71 (2) ◽  
pp. 154-156 ◽  
Author(s):  
Ghaleb Alhakmi ◽  
Abderrazzak Assani ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
The Other ◽  
Water Molecules ◽  
Framework Structure ◽  
Hydrothermal Conditions ◽  
Metal Phosphates

The title compound, Mn2Zn(PO4)2·H2O, was obtained under hydrothermal conditions. The structure is isotypic with other transition metal phosphates of the typeM3−xM′x(PO4)2·H2O, but shows no statistical disorder of the three metallic sites. The principal building units are distorted [MnO6] and [MnO5(H2O)] octahedra, a distorted [ZnO5] square pyramid and two regular PO4tetrahedra. The connection of the polyhedra leads to a framework structure. Two types of layers parallel to (-101) can be distinguished in this framework. One layer contains [Zn2O8] dimers linked to PO4tetrahedraviacommon edges. The other layer is more corrugated and contains [Mn2O8(H2O)2] dimers and [MnO6] octahedra linked together by common edges. The PO4tetrahedra link the two types of layers into a framework structure with channels parallel to [101]. The H atoms of the water molecules point into the channels and form O—H...O hydrogen bonds (one of which is bifurcated) with framework O atoms across the channels.

scholarly journals Crystal structure of dichlorido{2-[(2-hydroxyethyl)(pyridin-2-ylmethyl)amino]ethanolato-κ4N,N′,O,O′}iron(III) dihydrate from synchrotron data

2014 ◽  
Vol 70 (11) ◽  
pp. 334-336
Author(s):  
Jong Won Shin ◽  
Dae-Woong Kim ◽  
Dohyun Moon
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Sphere ◽  
Title Compound ◽  
Water Molecules ◽  
Bond Lengths ◽  
Distorted Octahedral Coordination ◽  
Lattice Water ◽  
Dimeric Unit ◽  
Distorted Octahedral

In the title compound, [Fe(C10H15N2O2)Cl2]·2H2O, the FeIIIion is coordinated by two N and two O atoms of the tetradentate 2-{(2-hydroxyethyl)(pyridin-2-ylmethyl)amino}ethanolate ligand and by two chloride anions, resulting in a distorted octahedral coordination sphere. The average Fe—X(X= ligand N and O atoms) and Fe—Cl bond lengths are 2.10 and 2.32 Å, respectively. In the crystal, duplex O—H...O hydrogen bonds between the hydroxyl and ethoxy groups of two neighbouring complexes give rise to a dimeric unit. The dimers are connected to the lattice water molecules (one of which is equally disordered over two sets of sites) through O—H...Cl hydrogen bonds, forming undulating sheets parallel to (010). Weak C—H...Cl hydrogen bonds are also observed.

High-pressure Synthesis and Crystal Structure of the Vanadium Orthoborate VBO3

2008 ◽  
Vol 63 (6) ◽  
pp. 713-717 ◽  
Author(s):  
Almut Haberer ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Oxygen Coordination ◽  
High Pressure High Temperature ◽  
Distorted Octahedral ◽  
Pressure Synthesis ◽  
Octahedral Oxygen

The vanadium orthoborate VBO3 was synthesized under high-pressure / high-temperature conditions of 7.5 GPa and 1250 °C in a Walker-type multianvil apparatus. The crystal structure was determined on the basis of single crystal X-ray diffraction data, collected at r. t. The title compound crystallizes in the trigonal calcite structure, space group R3̄c, with the lattice parameters a = 462.0(1) and c = 1450.9(3) pm. Within the trigonal planar BO3 groups, the B-O distance is 138.8(3) pm. The vanadium atoms have a slightly distorted octahedral oxygen coordination (V-O: 202.3(2) pm).

scholarly journals Crystal structure ofcatena-poly[[[trans-bis(acetonitrile-κN)diaquacobalt(II)]-μ-pyrazine-κ2N:N′] dinitrate]

2016 ◽  
Vol 72 (2) ◽  
pp. 151-154
Author(s):  
Chen Liu ◽  
Ashley C. Felts ◽  
Annaliese E. Thuijs ◽  
Aaron Useche ◽  
Khalil A. Abboud
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Structural Motif ◽  
Water Molecules ◽  
Inversion Center ◽  
Dimensional Network ◽  
Distorted Octahedral ◽  
A Chain ◽  
Nitrate Anions

The central structural motif of the title coordination polymer, [Co(NO3)2(C4H4N2)(CH3CN)2(H2O)2]n, is a chain composed of CoIIions linked by bis-monodentate bridging pyrazine ligands through their N atoms. The CoIIion is located on an inversion center and is additionally coordinated by two O atoms of water molecules and two N atoms of acetonitrile molecules. The resultant N4O2coordination sphere is distorted octahedral. The linear cationic chains extend parallel to theaaxis and are aligned into layers parallel to theacplane. Nitrate anions are situated in the space between the CoIIchains and form O—H...O hydrogen bonds with the coordinating water molecules, leading to a three-dimensional network structure. Weak C—H...O hydrogen bonds are also present between pyrazine or acetonitrile molecules and the nitrate anions.

scholarly journals Crystal structure of triaqua(4-cyanobenzoato-κ2O,O′)(nicotinamide-κN1)zinc 4-cyanobenzoate

2015 ◽  
Vol 71 (6) ◽  
pp. 684-686 ◽  
Author(s):  
Gülçin Şefiye Aşkın ◽  
Hacali Necefoğlu ◽  
Gamze Yılmaz Nayir ◽  
Raziye Çatak Çelik ◽  
Tuncer Hökelek
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Complex Cation ◽  
Water Molecules ◽  
Carboxylate Groups ◽  
Square Planar ◽  
Distorted Octahedral ◽  
Benzene Rings ◽  
Additional Water ◽  
Molecular Components

The asymmetric unit of the title salt, [Zn(C8H4NO2)(C6H6N2O)(H2O)3](C8H4NO2), contains one complex cation and one 4-cyanobenzoate (CNB) counter-anion. The ZnIIatom in the cation is coordinated by one 4-cyanobenzoate ligand, one nicotinamide (NA) ligand and three water molecules, the CNB anion thereby coordinating in a bidentateO,O′-mode through the carboxylate group. The latter, together with one water O atom and the N atom of the NA ligand, form a distorted square-planar arrangement, while the considerably distorted octahedral coordination sphere of the ZnIIatom is completed by the two O atoms of additional water molecules in the axial positions. The dihedral angles between the planar carboxylate groups and the adjacent benzene rings in the two anions are 10.25 (10) and 5.89 (14)°. Intermolecular O—H...O hydrogen bonds link two of the coordinating water molecules to two free CNB anions. In the crystal, further hydrogen-bonding interactions are present, namely N—H...O, O—H...O and C—H...O hydrogen bonds that link the molecular components, enclosingR22(12),R33(8) andR33(9) ring motifs and forming layers parallel to (001). π–π contacts between benzene rings [centroid-to-centroid distances = 3.791 (1) and 3.882 (1) Å] may further stabilize the crystal structure.

Diaqua(2,9-dimethyl-1,10-phenanthroline-κ2 N,N′)(3-hydroxybenzoato-κ2 O,O′)nickel(II) nitrate

2007 ◽  
Vol 63 (11) ◽  
pp. m2856-m2856 ◽  
Author(s):  
Xiao-peng Xuan ◽  
Pei-zheng Zhao
Keyword(s):  
Hydrogen Bonds ◽  
Network Structure ◽  
Complex Cation ◽  
Water Molecules ◽  
Supramolecular Network ◽  
Nitrate Anion ◽  
Asymmetric Unit ◽  
Rotation Axes ◽  
Octahedral Environment ◽  
Distorted Octahedral

The asymmetric unit of the title compound, [Ni(C7H5O3)(C14H12N2)(H2O)2]NO3, comprises one half of the NiII complex cation and one half of the non-coordinated nitrate anion, as both the Ni atom and the N and one O atoms of the anion lie on twofold rotation axes. The Ni2+ cation is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand, two water molecules and a bidentate 3-hydroxybenzoate anion in a distorted octahedral environment. The OH group of the benzoate is disordered over two positions with equal occupancy. An extensive series of O—H...O hydrogen bonds leads to a supramolecular network structure.

Triaquachloridobis[4-(dimethylamino)benzaldehyde-κO]nickel(II) chloride

2007 ◽  
Vol 63 (11) ◽  
pp. m2819-m2819 ◽  
Author(s):  
Qiang Wang ◽  
Da-Qi Wang ◽  
Yu-Ying Sun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Two Dimensional ◽  
Distorted Octahedral ◽  
The Mean ◽  
Cl Atom

In the title complex, [NiCl(C9H11NO)2(H2O)3]Cl, the NiII ion is six-coordinated by one Cl atom [Ni—Cl = 2.3712 (11) Å], two O atoms from two 4-(dimethylamino)benzaldehyde (L) ligands and three water molecules in a distorted octahedral geometry [Ni—O = 2.076 (3)–2.094 (3) Å]. The mean planes of the two L ligands make a dihedral angle of 65.8 (1)°. In the crystal structure, intermolecular O—H...Cl hydrogen bonds link cations and anions into two-dimensional sheets parallel to the ab plane, with the L ligands protruding above and below.

scholarly journals Crystal structure of poly[[hexaqua-1κ4O,2κ2O-bis(μ3-pyridine-2,4-dicarboxylato-1κO2:2κ2N,O2′;1′κO4)cobalt(II)strontium(II)] dihydrate]

2015 ◽  
Vol 71 (9) ◽  
pp. m167-m168
Author(s):  
Zhaojun Yu ◽  
Peng Jiang ◽  
Yanmei Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Polymeric Complex ◽  
Solvent Water ◽  
Dimensional Network ◽  
Distorted Octahedral

In the title polymeric complex, {[CoSr(C7H3NO4)2(H2O)6]·2H2O}n, the CoIIion, which is situated on a crystallographic centre of inversion, is six-coordinated by two O atoms and two N atoms from two pyridine-2,4-dicarboxylate (pydc2−) ligands and two terminal water molecules in a slightly distorted octahedral geometry, to form atrans-[Co(pydc)2(H2O)2]2−unit. The SrIIion, situated on aC2axis, is coordinated by four O atoms from four pydc2−ligands and four water molecules. The coordination geometry of the SrIIatom can be best described as a distorted dodecahedron. Each SrIIion bridges four [Co(pydc)2(H2O)2]2−units by four COO−groups of four pydc2−ligands to form a three-dimensional network structure. Two additional solvent water molecules are observed in the crystal structure and are connected to the three-dimensional coordination polymer by O—H...O hydrogen bonds. Further intra- and intermolecular O—H...O hydrogen bonds consolidate the overall structure.

Sign in / Sign up

Export Citation Format

Share Document