Structure and Fluorescence Properties of a Novel Supramolecular Zinc Complex

2008 ◽  
Vol 63 (12) ◽  
pp. 1357-1360 ◽  
Author(s):  
Gang Chen
Keyword(s):  
Hydrothermal Reaction ◽  
Three Dimensional ◽  
Free Ligand ◽  
Distorted Octahedral Geometry ◽  
Monoclinic Space Group ◽  
Ligand Complex ◽  
Complex Molecules ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Cell Dimensions

Hydrothermal reaction of Zn(NO3)2 · 6H2O and 2-hydroxypyridine-3-carboxylic acid afforded a novel supramolecular complex, [Zn(C6H4NO3)2(H2O)2] (1). The complex has been characterized by macroanalysis, IR spectra, and thermogravimetric and differential thermal analysis (TG/DTA). Single crystal X-ray analysis shows that complex 1 crystallizes in the monoclinic space group P21/c with the cell dimensions a = 7.534(6), b = 12.289(1), c = 7.534(6) Å, β = 100.51°, V = 685.85(1) Å3, and Z = 2. The six-coordinated Zn atom is in a severely distorted octahedral geometry. The complex molecules are assembled via strong O-H· · ·O and N-H· · ·O hydrogen bonding interactions into a three-dimensional supramolecular framework. Compared with the free ligand, complex 1 exhibits strong fluorescence in the solid state at room temperature.

scholarly journals 2-Amino-5-chloropyridinium cis-diaquadioxalatochromate(III) sesquihydrate

2012 ◽  
Vol 68 (6) ◽  
pp. m824-m825 ◽  
Author(s):  
Ichraf Chérif ◽  
Jawher Abdelhak ◽  
Mohamed Faouzi Zid ◽  
Ahmed Driss
Keyword(s):  
Rotation Axis ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Lattice Water ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Independent Lattice

In the crystal structure of the title compound, (C5H6ClN2)[Cr(C2O4)2(H2O)2]·1.5H2O, the CrIII atom adopts a distorted octahedral geometry being coordinated by two O atoms of two cis water molecules and four O atoms from two chelating oxalate dianions. The cis-diaquadioxalatochromate(III) anions, 2-amino-5-chloropyridinium cations and uncoordinated water molecules are linked into a three-dimensional supramolecular array by O—H...O and N—H...O hydrogen-bonding interactions. One of the two independent lattice water molecules is situated on a twofold rotation axis.

scholarly journals Crystal structure and Hirshfeld surface analysis of bis(benzoato-κ2 O,O′)[bis(pyridin-2-yl-κN)amine]nickel(II)

2019 ◽  
Vol 75 (9) ◽  
pp. 1301-1305
Author(s):  
Phichitra Phiokliang ◽  
Phakamat Promwit ◽  
Kittipong Chainok ◽  
Nanthawat Wannarit
Keyword(s):  
Surface Analysis ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Distorted Octahedral Geometry ◽  
Monoclinic Space Group ◽  
Complex Molecules ◽  
One Dimensional ◽  
Centroid Distance ◽  
Distorted Octahedral

A new mononuclear NiII complex with bis(pyridin-2-yl)amine (dpyam) and benzoate (benz), [Ni(C7H5O2)2(C10H9N3)], crystallizes in the monoclinic space group P21/c. The NiII ion adopts a cis-distorted octahedral geometry with an [NiN2O4] chromophore. In the crystal, the complex molecules are linked together into a one-dimensional chain by symmetry-related π–π stacking interactions [centroid-to-centroid distance = 3.7257 (17) Å], along with N—H...O and C—H...O hydrogen bonds. The crystal packing is further stabilized by C—H...π interactions, which were investigated by Hirshfeld surface analysis.

Synthesis and Structure of cis-Dioxobis(pyrimidine-2-thiolato-N,S)molybdenum(VI)

1992 ◽  
Vol 45 (11) ◽  
pp. 1933 ◽  
Author(s):  
PR Traill ◽  
AG Wedd ◽  
ERT Tiekink
Keyword(s):  
Least Squares ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Monoclinic Space Group ◽  
Full Matrix ◽  
X Ray ◽  
Distorted Octahedral ◽  
Cell Dimensions ◽  
Unit Cell Dimensions

The characterization of two MoVI complexes, cis -[MoO2(2-pymS)2] and cis -[MoO2(2-pyS)2] (where 2-pymSH is pyrimidine-2-thiol and 2-pySH is pyridine-2-thiol), and their reaction with Ph3P are reported. The X-ray structure of cis -[MoO2(2-pymS)2] shows the molybdenum atom to exist in a distorted octahedral geometry defined by two mutually cis oxygen atoms and two chelating 2-pymS ligands so that the two sulfur atoms occupy approximate trans positions. Crystals of cis -[MoO2(2-pymS)2] are monoclinic, space group P 21/n, with unit cell dimensions: a 9.301(3), b 12.121(2), c 11.303(3) �, β 112.62(3)�, V 1176.3 �3, Z 4. The structure was refined by a full-matrix least-squares procedure to R 0.067 for 1858 reflections with I ≥ 2.5 (I).

Crystal structure and photophysical properties of a novel polyoxomolybdate porphyrin

2020 ◽  
Vol 76 (12) ◽  
pp. 1062-1067
Author(s):  
Wen-Tong Chen
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Reaction ◽  
Photophysical Properties ◽  
Three Dimensional ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
Covalent Bonds ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Counter Cation

A novel polyoxomolybdate with a diprotonated porphyrin as counter-cation, namely, 5,10,15,20-tetrakis(4-carboxyphenyl)-21H,22H,23H,24H-porphine(2+) hexamolybdate(VI) pentahydrate, (C48H32N4O8)[Mo6O19]·5H2O or (H2TCPP)[Mo6O19]·5H2O, I, was prepared via the hydrothermal reaction of MoCl5, 5,10,15,20-tetrakis(4-carboxyphenyl)-21H,23H-porphine (TCPP) and distilled water. The crystal structure of hydrated polyoxometalate (POM) salt I was characterized by single-crystal X-ray diffraction. The compound is characterized by an isolated (zero-dimensional, 0D) structure, because it cannot extend via covalent bonds. The structure contains one [Mo6O19]2− anion, one (H2TCPP)2+ cation and five lattice water molecules. Each of the Mo6+ ions is six-coordinated and displays a distorted octahedral motif. The (H2TCPP)2+ cation displays a distorted saddle motif. A three-dimensional (3D) supramolecular framework is formed via hydrogen-bonding interactions. The compound shows a red photoluminescence emission.

Bis[1,3-bis(1H-benzimidazol-2-yl)benzene-κN 3]bis(nitrato-κ2 O,O′)cadmium(II) dihydrate

2007 ◽  
Vol 63 (11) ◽  
pp. m2752-m2752 ◽  
Author(s):  
Fa-Yan Meng ◽  
Yi-Ming Zhang ◽  
Seik Weng Ng
Keyword(s):  
Crystal Structure ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Complex Molecules ◽  
Solvent Water ◽  
Dimensional Network ◽  
Distorted Octahedral

In the title complex, [Cd(NO3)2(C20H14N4)2]·2H2O, the CdII ion, which lies on a crystallographic twofold axis, is bis-chelated by two nitrate ligands and is coordinated by one tertiary N atom from each of two 1,3-bis(1H-benzimidazol-2-ylmethyl)benzene ligands in a distorted octahedral geometry. In the crystal structure, complex molecules and solvent water molecules are connected via hydrogen bonds to form a three-dimensional network.

scholarly journals Crystal structure of tetraaquabis(thiocyanato-κN)nickel(II)–2,5-dimethylpyrazine (1/4)

2015 ◽  
Vol 71 (2) ◽  
pp. m18-m18 ◽  
Author(s):  
Stefan Suckert ◽  
Mario Wriedt ◽  
Inke Jess ◽  
Christian Näther
Keyword(s):  
Crystal Structure ◽  
Three Dimensional ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Complex Molecules ◽  
Dimensional Network ◽  
Distorted Octahedral ◽  
Thiocyanate Ligand ◽  
Water Ligands ◽  
Discrete Complex

In the crystal structure of the title compound, [Ni(NCS)2(H2O)4]·4C6H8N2, the NiIIcations are coordinated by four water ligands and twotrans-coordinated terminallyN-bonded thiocyanate anions in a slightly distorted octahedral geometry. The asymmetric unit consists of a Ni2+cation located on a centre of inversion, two water molecules and one thiocyanate ligand, as well as two uncoordinated 2,5-dimethylpyrazine ligands in general positions. In the crystal, discrete complex molecules are linked into a three-dimensional network by O—H...N hydrogen bonding between the water H atoms and the 2,5-dimethylpyrazine N atoms.

Preparation and structure of mer-trichloro(acetonitrile)bis-(triphenylphosphine)osmium(III)

1980 ◽  
Vol 58 (10) ◽  
pp. 1042-1045 ◽  
Author(s):  
R. L. Parkes ◽  
N. C. Payne ◽  
E. O. Sherman
Keyword(s):  
Three Dimensional ◽  
Phosphine Ligands ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
X Ray ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Cell Dimensions ◽  
The Mean ◽  
Bond Trans

An air-stable, red, crystalline, N-bonded acetonitrile complex of Os(III), OsCl3(NCCH3)(P(C6H5)3)2, has been prepared and characterized by elemental analysis, magnetic susceptibility, and a single crystal X-ray structure determination. Crystals are monoclinic, space group P21/c, cell dimensions a = 10.029(2), b = 15.233(2), c = 25.246(4) Å, β = 113.65(1)°, and Z = 4. Three dimensional X-ray diffraction intensity data were collected on an automatic four circle diffractometer using Cu radiation. Full-matrix least-squares refinement on F converged at R = 0.038 for 4384 unique observations. The Os atom has a slightly distorted octahedral coordination geometry, with trans phosphine ligands, mean Os—P 2.406(2) Å. The acetonitrile ligand is σ-bonded through the N atom, Os—N 2.038(6) Å. The bond trans to the acetonitrile ligand. Os—Cl(1) 2.364(2) Å, is not significantly different from the mean of the cisOs—Cl bonds, 2.361(2) Å.

scholarly journals Crystal structure of bis(acetato-κO)bis(pyridine-2-carboxamide oxime-κ2N,N′)cadmium ethanol disolvate

2014 ◽  
Vol 70 (9) ◽  
pp. 142-144 ◽  
Author(s):  
Jiyong Liu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Mononuclear Complex ◽  
Complex Molecules ◽  
Distorted Octahedral Coordination ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Solvent Molecules

In the title compound, [Cd(CH3COO)2(C6H7N3O)2]·2C2H5OH, the CdIIatom, which lies on a twofold rotation axis, is coordinated by two monodentate acetate groups and twoN,N′-chelating pyridine-2-carboxamide oxime ligands, leading to a distorted octahedral coordination sphere. The mononuclear complex molecules are assembled into chains along thec-axis directionviaN—H...O hydrogen-bonding interactions. These chains are further assembled by O—H...O hydrogen bonds involving the ethanol solvent molecules into a three-dimensional supramolecular structure.

scholarly journals (2-Amino-7-methyl-4-oxidopteridine-6-carboxylato-κ3O4,N5,O6)aqua(ethane-1,2-diamine-κ2N,N′)nickel(II) dihydrate

2013 ◽  
Vol 69 (2) ◽  
pp. m99-m100 ◽  
Author(s):  
Siddhartha S. Baisya ◽  
Parag S. Roy
Keyword(s):  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Complex Molecules ◽  
Lattice Water ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Distorted Octahedral ◽  
The Mean

The NiIIatom in the title complex, [Ni(C8H5N5O3)(C2H8N2)(H2O)]·2H2O, is six-coordinated in a distorted octahedral geometry by a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxylate (pterin) ligand, a bidentate ancillary ethane-1,2-diamine (en) ligand and a water molecule. The pterin ligand forms two chelate rings. The en and pterin ligands are arranged nearly orthogonally [dihedral angle between the mean plane of the en molecule and the pterin ring = 77.1 (1)°]. N—H...O, O—H...N and O—H...O hydrogen bonds link the complex molecules and lattice water molecules into a three-dimensional network. π–π interactions are observed between the pyrazine and pyrimidine rings [centroid–centroid distance = 3.437 (2) Å].

scholarly journals Bis{μ-N-[(E)-4-benzyloxy-2-oxidobenzylidene]-4-nitrobenzenecarbohydrazidato}bis[diaquanickel(II)] dimethylformamide tetrasolvate

2014 ◽  
Vol 70 (6) ◽  
pp. m211-m212 ◽  
Author(s):  
Bibitha Joseph ◽  
M. Sithambaresan ◽  
M. R. Prathapachandra Kurup ◽  
Seik Weng Ng
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Free Ligand ◽  
Title Complex ◽  
Tridentate Ligand ◽  
Coordination Geometry ◽  
Π Interactions ◽  
Hydrogen Bonding Interactions ◽  
Centroid Distance ◽  
Distorted Octahedral

The molecule of the title complex, [Ni2(C21H15N3O5)2(H2O)4]·4C3H7NO, is located on an inversion centre. This results in a dimeric NiIIcomplex, with the two NiIIatoms bridged by phenolate O atoms. The tridentate ligand is chelated to each NiIIatomviaone N and two O atoms of the iminolate form of the hydrazide moiety, which has the same conformation as the free ligand. The coordination geometry around each NiIIion is slightly distorted octahedral. A supramolecular three-dimensional architecture is created by dominant intermolecular O—H...N, O—H...O and C—H...O hydrogen-bonding interactions. These are augmented by two C—H...π interactions and a π–π interaction with a centroid–centroid distance of 3.681 (2) Å.

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