scholarly journals Crystal structure and thermal properties of a square-planar NiIIcomplex of cyanide and a tricyclic bis-amidine ligand formedin situunder solvothermal conditions

2013 ◽  
Vol 69 (6) ◽  
pp. 565-568 ◽  
Author(s):  
Monika Stolárová ◽  
Juraj Černák ◽  
Milagros Tomás ◽  
Larry R. Falvello
Keyword(s):  
Crystal Structure ◽  
Thermal Properties ◽  
Complex I ◽  
Structural Unit ◽  
Planar Geometry ◽  
Water Molecules ◽  
Two Dimensional ◽  
Square Planar ◽  
Cyanide Ligands ◽  
Solvothermal Conditions

The reaction ofN1,N1′-(ethane-1,2-diyl)bis(propane-1,3-diamine) (bapen), K2[Ni(CN)4]·H2O and dimethylformamide in the presence of Gd(NO3)3·6H2O under solvothermal conditions yielded yellow crystals of dicyanido(2,3,4,6,7,9,10,11-octahydropyrimido[2′,1′:3,4]pyrazino[1,2-a]pyrimidine)nickel(II) hemihydrate, [Ni(CN)2(C10H16N4)]·0.5H2O, (I), the crystal structure of which is composed of [Ni(CN)2(pdpm)] molecules (pdpm is 2,3,4,6,7,9,10,11-octahydropyrimido[2′,1′:3,4]pyrazino[1,2-a]pyrimidine) on general positions linked by O—H...N hydrogen bonds to water molecules located on twofold axes. This structural unit is further linked by nonclassical C—H...N interactions to form a warped two-dimensional net perpendicular to the unit-cellbaxis. The nets are stacked, with C—H...O contacts joining successive units. The NiIIcation is coordinated with square-planar geometry by a chelating pdpm ligand and two cyanide ligands in mutuallycispositions. Complex (I) is stable up to 360 K, at which point dehydration takes place; the ligands start to decompose at 558 K.

scholarly journals Crystal structure of poly[[diaquatetra-μ2-cyanido-iron(II)platinum(II)] acetone disolvate]

2019 ◽  
Vol 75 (10) ◽  
pp. 1536-1539
Author(s):  
Iryna S. Kuzevanova ◽  
Dina D. Naumova ◽  
Kateryna V. Terebilenko ◽  
Sergiu Shova ◽  
Il'ya A. Gural'skiy
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecules ◽  
Two Dimensional ◽  
Polymeric Complex ◽  
Guest Molecules ◽  
Coordination Environment ◽  
Square Planar ◽  
Coordinated Water

In the title polymeric complex, {[FePt(CN)4(H2O)2]·2C3H6O} n , the FeII cation has an octahedral [FeN4O2] geometry being coordinated by two water molecules and four cyanide anions. The Pt cation is located on an inversion centre and has a square-planar coordination environment formed by four cyanide groups. The tetracyanoplatinate anions bridge the FeII cations to form infinite two-dimensional layers that propagate in the bc plane. Two guest molecules of acetone per FeII are located between the layers. These guest acetone molecules interact with the coordinated water molecules by O—H...O hydrogen bonds.

scholarly journals The crystal structure of ((cyclohexylamino){(Z)-2-[(E)-5-methoxy-3-nitro-2-oxidobenzylidene-κO]hydrazin-1-ylidene-κN 2}methanethiolato-κS)(dimethyl sulfoxide-κS)platinum(II): a supramolecular two-dimensional network

2019 ◽  
Vol 75 (10) ◽  
pp. 1486-1489
Author(s):  
Md. Azharul Arafath ◽  
Huey Chong Kwong ◽  
Farook Adam
Keyword(s):  
Crystal Structure ◽  
Dimethyl Sulfoxide ◽  
Chelate Ring ◽  
Title Complex ◽  
Planar Geometry ◽  
Maximum Deviation ◽  
Two Dimensional ◽  
Bite Angle ◽  
Dimensional Network ◽  
Square Planar

The PtII atom in the title complex, [Pt(C15H18N4O4S)(C2H6OS)], exists within a square-planar NS2O donor set provided by the N, S, O atoms of the di-anionic tridentate thiosemicarbazo ligand and a dimethyl sulfoxide S atom. The two chelate rings are coplanar, subtending a dihedral angle of 1.51 (7)°. The maximum deviation from an ideal square-planar geometry is seen in the five-membered chelate ring with an S—Pt—S bite angle of 96.45 (2)°. In the crystal, molecules are linked via N—H...O, C—H...O, C—H...N and C—H...π interactions into two-dimensional networks lying parallel to the ab plane. The conformations of related cyclohexylhydrazine-1-carbothioamide ligands are compared to that of the title compound.

Two-dimensional lanthanide(III) coordination polymers: solvothermal synthesis, crystal structure, and stability

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Runmei Ding ◽  
Zixin He ◽  
Meilin Wang ◽  
Danian Tian ◽  
Peipei Cen
Keyword(s):  
Crystal Structure ◽  
Coordination Polymers ◽  
Solvothermal Synthesis ◽  
Analysis Data ◽  
Water Stability ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
X Ray ◽  
Solvothermal Conditions

AbstractBased on 2-(4-pyridyl)-terephthalate (H2pta) and oxalate ligands, two new lanthanide-containing coordination polymers (CPs), [Tb(pta)(C2O4)0.5(H2O)2)]·2H2O (1) and [Sm(pta)(C2O4)0.5(H2O)2)]·2H2O (2), have been synthesized under solvothermal conditions. The structures of both 1 and 2 have been determined by single-crystal X-ray diffraction. Infrared, elemental analysis, powder X-ray diffraction and thermogravimetric analysis data are also presented. The crystals of 1 and 2 exhibit isostructural layer-like networks, crystallizing in the triclinic space group P$‾{1}$. The layers are further stabilized and associated into 3D architectures through hydrogen bonding. Remarkably, the CPs 1 and 2 exhibit excellent water stability and remarkable thermostability with thermal decomposition temperatures of more than 420 °C.

scholarly journals Crystal structure of the new hybrid material bis(1,4-diazoniabicyclo[2.2.2]octane) di-μ-chlorido-bis[tetrachloridobismuthate(III)] dihydrate

2015 ◽  
Vol 71 (11) ◽  
pp. 1384-1387
Author(s):  
Marwen Chouri ◽  
Habib Boughzala
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Molar Ratio ◽  
Water Molecules ◽  
Site Symmetry ◽  
Two Dimensional ◽  
Slow Evaporation ◽  
Solution Ph

The title compound bis(1,4-diazoniabicyclo[2.2.2]octane) di-μ-chlorido-bis[tetrachloridobismuthate(III)] dihydrate, (C6H14N2)2[Bi2Cl10]·2H2O, was obtained by slow evaporation at room temperature of a hydrochloric aqueous solution (pH = 1) containing bismuth(III) nitrate and 1,4-diazabicyclo[2.2.2]octane (DABCO) in a 1:2 molar ratio. The structure displays a two-dimensional arrangement parallel to (100) of isolated [Bi2Cl10]4−bioctahedra (site symmetry -1) separated by layers of organic 1,4-diazoniabicyclo[2.2.2]octane dications [(DABCOH2)2+] and water molecules. O—H...Cl, N—H...O and N—H...Cl hydrogen bonds lead to additional cohesion of the structure.

scholarly journals trans-Dichloridobis(4-methoxyaniline-κN)palladium(II)

2009 ◽  
Vol 65 (6) ◽  
pp. m673-m673 ◽  
Author(s):  
Volodimir Bon ◽  
Svitlana Orysyk ◽  
Vasyl Pekhnyo
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Planar Geometry ◽  
Coordination Environment ◽  
Square Planar ◽  
A Chain

In the title compound, [PdCl2(C7H9NO)2], the Pd atom is situated on a crystallographic centre of inversion. The coordination environment of the Pd atom shows a slightly distorted square-planar geometry. The crystal structure exhibits weak intermolecular Pd...Cl interactions, with Pd...Cl distances of 3.6912 (6) Å. A chain-like arrangement of molecules realized by intermolecular N—H...Cl hydrogen bonds is observed along [010].

scholarly journals Crystal structure ofN′′-benzyl-N′′-[3-(benzyldimethylazaniumyl)propyl]-N,N,N′,N′-tetramethylguanidinium bis(tetraphenylborate)

2015 ◽  
Vol 71 (12) ◽  
pp. o1086-o1087
Author(s):  
Ioannis Tiritiris ◽  
Willi Kantlehner
Keyword(s):  
Crystal Structure ◽  
Double Bond ◽  
Positive Charge ◽  
Planar Geometry ◽  
Methyl Groups ◽  
Two Dimensional ◽  
Single Bond ◽  
Double Bond Character ◽  
Bond Lengths ◽  
Bond Character

In the crystal structure of the title salt, C24H38N42+·2C24H20B−, the C—N bond lengths in the central CN3unit of the guanidinium ion are 1.3364 (13), 1.3407 (13) and 1.3539 (13) Å, indicating partial double-bond character. The central C atom is bonded to the three N atoms in a nearly ideal trigonal–planar geometry and the positive charge is delocalized in the CN3plane. The bonds between the N atoms and the terminal methyl groups of the guanidinium moiety and the four C—N bonds to the central N atom of the (benzyldimethylazaniumyl)propyl group have single-bond character. In the crystal, C—H...π interactions between the guanidinium H atoms and the phenyl C atoms of the tetraphenylborate ions are present, leading to the formation of a two-dimensional supramolecular pattern parallel to theacplane.

(NH4)[B3PO6(OH)3]·0.5H2O

2007 ◽  
Vol 63 (11) ◽  
pp. i185-i185 ◽  
Author(s):  
Wei Liu ◽  
Jingtai Zhao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Water Molecules ◽  
Hydrogen Bond Network ◽  
Ammonium Ions ◽  
One Dimensional ◽  
Bond Network ◽  
Solvothermal Conditions

The title compound, ammonium catena-[monoboro-monodihydrogendiborate-monohydrogenphosphate] hemihydrate, was obtained under solvothermal conditions using glycol as the solvent. The crystal structure is constructed of one-dimensional infinite borophosphate chains, which are interconnected by ammonium ions and water molecules via a complex hydrogen-bond network to form a three-dimensional structure. The water molecules of crystallization are disordered over inversion centres, and their H atoms were not located.

scholarly journals V2O2F4(H2O)2·H2O: a new V4+layer structure related to VOF3

2016 ◽  
Vol 72 (1) ◽  
pp. 80-83 ◽  
Author(s):  
Cameron Black ◽  
Philip Lightfoot
Keyword(s):  
Ionic Liquids ◽  
Title Compound ◽  
Solvothermal Synthesis ◽  
Layer Structure ◽  
Three Dimensional ◽  
Water Molecules ◽  
Frustrated Magnets ◽  
Two Dimensional ◽  
Triangular Lattices ◽  
Solvothermal Conditions

VIVoxyfluorides are of interest as frustrated magnets. The successful synthesis of two-dimensionally connected vanadium(IV) oxyfluoride structures generally requires the use of ionic liquids as solvents. During solvothermal synthesis experiments aimed at producing two- and three-dimensional vanadium(IV) selenites with triangular lattices, the title compound, diaquatetra-μ-fluorido-dioxidodivanadium(IV) monohydrate, V2O2F4(H2O)2·H2O, was discovered and features a new infinite V4+-containing two-dimensional layer comprised of fluorine-bridged corner- and edge-sharing VOF4(H2O) octahedral building units. The synthesis was carried out under solvothermal conditions. The V4+centre exhibits a typical off-centring, with a short V=O bond and an elongatedtrans-V—F bond. Hydrogen-bonded water molecules occur between the layers. The structure is related to previously reported vanadium oxyfluoride structures, in particular, the same layer topology is seen in VOF3.

scholarly journals Dynamics of Water in Crystal Hydrates

1967 ◽  
Vol 22 (9) ◽  
pp. 1440-1451 ◽  
Author(s):  
Ingo Berthold ◽  
Alarich Weiss
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Dynamical Behaviour ◽  
Water Molecules ◽  
Intensity Data ◽  
Two Dimensional ◽  
Fourier Synthesis ◽  
Hydrogen Atoms ◽  
X Ray ◽  
H Nmr

The crystal structure of Na2S2O6·2 H2O has been refined by means of single crystal X-ray intensity data. The structure of the isotypic Li2S2O6·2 H20 was also determined by single crystal studies. Two dimensional differential FOURIER synthesis revealed the approximate positions of the hydrogen atoms. From 1H-NMR investigations, the crystal structure, and information gained by IR spectroscopy the complete atomic arrangement in these two substances was obtained. The influence of the dynamical behaviour of the water molecules is taken into account in determining the hydrogen positions.

scholarly journals Crystal structure of the coordination polymer [FeIII2{PtII(CN)4}3]

2015 ◽  
Vol 71 (1) ◽  
pp. i1-i2
Author(s):  
Maksym Seredyuk ◽  
M. Carmen Muñoz ◽  
José A. Real ◽  
Turganbay S. Iskenderov
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Point Group ◽  
Three Dimensional ◽  
Title Complex ◽  
Group Symmetry ◽  
Point Group Symmetry ◽  
Rotation Axes ◽  
Square Planar ◽  
Cyanide Ligands

The title complex, poly[dodeca-μ-cyanido-diiron(III)triplatinum(II)], [FeIII2{PtII(CN)4}3], has a three-dimensional polymeric structure. It is built-up from square-planar [PtII(CN)4]2−anions (point group symmetry 2/m) bridging cationic [FeIIIPtII(CN)4]+∞layers extending in thebcplane. The FeIIatoms of the layers are located on inversion centres and exhibit an octahedral coordination sphere defined by six N atoms of cyanide ligands, while the PtIIatoms are located on twofold rotation axes and are surrounded by four C atoms of the cyanide ligands in a square-planar coordination. The geometrical preferences of the two cations for octahedral and square-planar coordination, respectively, lead to a corrugated organisation of the layers. The distance between neighbouring [FeIIIPtII(CN)4]+∞layers corresponds to the lengtha/2 = 8.0070 (3) Å, and the separation between two neighbouring PtIIatoms of the bridging [PtII(CN)4]2−groups corresponds to the length of thecaxis [7.5720 (2) Å]. The structure is porous with accessible voids of 390 Å3per unit cell.

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