scholarly journals (Ethanolato-κO)[N′-(3-methoxy-2-oxidobenzylidene-κO2)benzohydrazidato-κ2N′,O]oxidovanadium(V)

2012 ◽  
Vol 68 (8) ◽  
pp. m1101-m1102
Author(s):  
Xiao-Hua Chen ◽  
Qiong-Jie Wu ◽  
Li-Juan Chen ◽  
Ming-Xing Yang
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Basal Plane ◽  
Title Complex ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry

In the title complex, [V(C15H12N2O4)(C2H5O)O], the VVion is coordinated by an oxide O atom, an ethanolate anion and two O atoms and one N atom from the tridentate benzohydrazidate dianion in a distorted square-pyramidal geometry; the V atom is displaced by 0.4748 (8) Å from the basal plane towards the axial oxide O atom. An intramolecular O—H...N hydrogen bond occurs in the benzohydrazidate ligand. Weak intermolecular C—H...O hydrogen bonding is present in the crystal.

[Bis(2-pyridylmethyl)amine]dichloridozinc(II) chloroform solvate

2007 ◽  
Vol 63 (11) ◽  
pp. m2810-m2811 ◽  
Author(s):  
Young-Inn Kim ◽  
You-Soon Lee ◽  
Hoe-Joo Seo ◽  
Jin-Young Lee ◽  
Sung Kwon Kang
Keyword(s):  
Hydrogen Bonding ◽  
Title Complex ◽  
Pyramidal Geometry ◽  
Hydrogen Bonding Interactions ◽  
Square Pyramidal Geometry ◽  
Cl Atoms ◽  
Centrosymmetric Dimers

The Zn atom in the title complex, [ZnCl2(C12H13N3)]·CHCl3, adopts a distorted square-pyramidal geometry, being coordinated by three N atoms of the tridentate dipicolylamine ligand and two Cl atoms. Intermolecular N—H...Cl hydrogen-bonding interactions link the molecules into centrosymmetric dimers.

(Benzoylacetonato)chloro[3-(dimethylamino)propylamine]copper(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m843-m845
Author(s):  
Juan-Lan Huang ◽  
Yun-Long Feng
Keyword(s):  
Molecular Structure ◽  
Basal Plane ◽  
Title Complex ◽  
Apical Position ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry ◽  
Cl Atom

In the molecular structure of the title complex, [Cu(C10H9O2)Cl(C5H14N2)], the CuII atom is in a distorted square-pyramidal geometry, coordinated by two O atoms of a benzoylacetonate ligand and two N atoms of a 3-(dimethylamino)propylamine ligand in the basal plane, while a Cl atom occupies the apical position.

scholarly journals Crystal structure of chlorido(5,10,15,20-tetraphenylporphyrinato-κ4N)manganese(III) 2-aminopyridine disolvate

2015 ◽  
Vol 71 (2) ◽  
pp. 165-167 ◽  
Author(s):  
Wafa Harhouri ◽  
Salma Dhifaoui ◽  
Shabir Najmudin ◽  
Cecilia Bonifácio ◽  
Habib Nasri
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Axial Ligand ◽  
Pyramidal Geometry ◽  
Porphyrin Macrocycle ◽  
Planar Conformation ◽  
Solvent Molecules ◽  
Square Pyramidal Geometry

In the title compound, [Mn(C44H28N4)Cl]·2C5H6N2, the MnIIIcentre is coordinated by four pyrrole N atoms [averaged Mn—N = 2.012 (4) Å] of the tetraphenylporphyrin molecule and one chloride axial ligand [Mn—Cl = 2.4315 (7) Å] in a square-pyramidal geometry. The porphyrin macrocycle exhibits a non-planar conformation with majorrufflingandsaddlingdistortions. In the crystal, two independent solvent molecules form dimers through N—H...N hydrogen bonding. In these dimers, one amino N atom has a short Mn...N contact of 2.642 (1) Å thus completing the Mn environment in the form of a distorted octahedron, and another amino atom generates weak N—H...Cl hydrogen bonds, which link further all molecules into chains along theaaxis.

Di-μ-2-sulfonatobenzoato-bis[aqua(1,10-phenanthroline)copper(II)] trihydrate

2006 ◽  
Vol 62 (4) ◽  
pp. m875-m877
Author(s):  
Wei-Bing Zhang ◽  
Shuang-Di Ruan ◽  
Shu-Juan Zhu ◽  
Hong-Ping Xiao ◽  
Sai-Ya Ye
Keyword(s):  
Hydrogen Bond ◽  
Network Structure ◽  
Title Compound ◽  
Intermolecular Hydrogen Bond ◽  
Two Dimensional ◽  
Bridging Ligands ◽  
Pyramidal Geometry ◽  
Hydrogen Bond Interactions ◽  
Dimensional Network ◽  
Square Pyramidal Geometry

In the title compound, [Cu2(C7H4O5S)2(C12H8N2)2(H2O)2]·3H2O, each copper(II) atom is coordinated by two N atoms from one 1,10-phenanthroline molecule, two carboxylate O atoms from two 2-sulfonatobenzoato dianions and one aqua O atom in a distorted square pyramidal geometry. The 2-sulfonatobenzoato dianions function as μ2-bridging ligands in the formation of a dinuclear complex. Intermolecular hydrogen-bond interactions link the dinuclear units into a two-dimensional network structure.

catena-Poly[[(N,N-dimethylpropane-1,3-diamine)thiocyanatocopper(II)]-μ-thiocyanato]

2007 ◽  
Vol 63 (3) ◽  
pp. m832-m834 ◽  
Author(s):  
Chen-Yi Wang
Keyword(s):  
Title Compound ◽  
Basal Plane ◽  
Apical Position ◽  
Pyramidal Geometry ◽  
Thiocyanate Ligand ◽  
Square Pyramidal Geometry

In the title compound, [Cu(NCS)2(C5H14N2)] n , the CuII atom is five-coordinated in a square-pyramidal geometry, with two N atoms of the N,N-dimethylpropane-1,3-diamine ligand and two N atoms from two thiocyanate ligands defining the basal plane, and one S atom of another thiocyanate ligand occupying the apical position. The [Cu(NCS)2(C5H14N2)] units are linked by bridging thiocyanate ligands, forming chains running along the b axis.

Dichloro[tris(3-methyl-5-phenylpyrazol-1-yl)methane]copper(II) acetonitrile hemisolvate

2007 ◽  
Vol 63 (3) ◽  
pp. m685-m686
Author(s):  
Hong-Shan He ◽  
Seik Weng Ng
Keyword(s):  
Title Complex ◽  
Tripodal Ligand ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry

In the title complex, [CuCl2(C31H28N6)]·0.5C2H3N, the Cu2+ atom is coordinated in a distorted square-pyramidal geometry by three N atoms from the pyrazolyl groups of the tripodal ligand, and by two chloride anions.

scholarly journals Syntheses and crystal structures of a new pyrazine dicarboxamide ligand, N 2,N 3-bis(quinolin-8-yl)pyrazine-2,3-dicarboxamide, and of a copper perchlorate binuclear complex

2020 ◽  
Vol 76 (3) ◽  
pp. 332-338
Author(s):  
Dilovan S. Cati ◽  
Helen Stoeckli-Evans
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Copper Atom ◽  
Binuclear Complex ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Pyramidal Geometry ◽  
Difference Fourier ◽  
Square Pyramidal Geometry

The title pyrazine dicarboxamide ligand, N 2,N 3-bis(quinolin-8-yl)pyrazine-2,3-dicarboxamide (H2L1), C24H16N6O2, has a twisted conformation with the outer quinoline groups being inclined to the central pyrazine ring by 9.00 (6) and 78.67 (5)°, and by 79.94 (4)° to each other. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming layers parallel to the (10\overline{1}) plane, which are in turn linked by offset π–π interactions [intercentroid distances 3.4779 (9) and 3.6526 (8) Å], forming a supramolecular three-dimensional structure. Reaction of the ligand H2L1 with Cu(ClO4)2 in acetonitrile leads to the formation of the binuclear complex, [μ-(3-{hydroxy[(quinolin-8-yl)imino]methyl}pyrazin-2-yl)[(quinolin-8-yl)imino]methanolato]bis[diacetonitrilecopper(II)] tris(perchlorate) acetonitrile disolvate, [Cu2(C24H15N6O2)(CH3CN)4](ClO4)3·2CH3CN or [Cu2(HL1−)(CH3CN)4](ClO4)3·2CH3CN (I). In the cation of complex I, the ligand coordinates to the copper(II) atoms in a bis-tridentate fashion. A resonance-assisted O—H...O hydrogen bond is present in the ligand; the position of this H atom was located in a difference-Fourier map. Both copper(II) atoms are fivefold coordinate, being ligated by three N atoms of the ligand and by the N atoms of two acetonitrile molecules. The first copper atom has a perfect square-pyramidal geometry while the second copper atom has a distorted shape. In the crystal, the cation and perchlorate anions are linked by a number of C—H...O hydrogen bonds, forming a supramolecular three-dimensional structure.

scholarly journals Crystal structure of a mononuclear copper(II) complex with 2-methoxy-N,N-bis(quinolin-2-ylmethyl)ethylamine (DQMEA)

2018 ◽  
Vol 74 (8) ◽  
pp. 1138-1141
Author(s):  
Steven T. Frey ◽  
Jason Li ◽  
Manpreet Kaur ◽  
Jerry P. Jasinski
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Packing ◽  
Complex Cation ◽  
Axial Position ◽  
Charge Balance ◽  
X Ray Diffraction ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry ◽  
Monodentate Coordination

Structural characterization of the compound [Cu(C2H3N)(C23H23N3O)](ClO4)2] or [Cu(C2H3N)(DQMEA)](ClO4)2] [DQMEA = 2-methoxy-N,N-bis(quinolin-2-ylmethyl)ethylamine] {systematic name: (acetonitrile)[2-methoxy-N,N-bis(quinolin-2-ylmethyl)ethylamine]copper(II) diperchlorate} by single-crystal X-ray diffraction reveals a complex cation with a tetradentate coordination of the DQMEA ligand along with monodentate coordination of a CH3CN ligand to a single CuII center, with two perchlorate anions providing charge balance. The CuII center has a distorted square-pyramidal geometry in which the nitrogen atoms of the DQMEA and CH3CN ligands occupy the equatorial positions, while the oxygen atom of the DQMEA ligand resides in the axial position with an elongated Cu—O bond. The quinoline ring systems are nearly co-planar in the structure, while the linear CH3CN ligand is tilted significantly below this plane, and the central nitrogen of DQMEA is above it. Within the complex, weak C—H...N hydrogen bonding takes place between the nitrogen of CH3CN and a neighboring quinolyl group. The perchlorate ions are disordered within the structure, but undergo a number of weak intermolecular C—H...O hydrogen-bonding interactions. Additional weak π-stacking interactions between the quinolyl groups of neighboring complexes further stabilize the crystal packing.

scholarly journals Bis{μ4-N-[phenyl(pyridin-2-ylazanidyl)methyl]pyridin-2-aminido}tetrakis(tetrahydrofuran)tetralithium

2013 ◽  
Vol 69 (12) ◽  
pp. m683-m683 ◽  
Author(s):  
Juan Chen
Keyword(s):  
Complex Molecule ◽  
Title Complex ◽  
Coordination Modes ◽  
Bond Lengths ◽  
Pyramidal Geometry ◽  
Metal Atoms ◽  
Square Pyramidal Geometry

The title complex, [Li4(C17H14N4)2(C4H8O)4], bears a novel tetradentate diamido ligand. In the tetranuclear centrosymmetric complex molecule, the metal atoms exhibit two kinds of coordination modes. The middle two Li+cations are coordinated by four N (ligand) and one O (tetrahydrofuran, THF) atoms, resulting in a distorted square-pyramidal geometry. The outer two Li+cations are in distorted tetrahedral environments consisting of three N (ligand) and one O (THF) atoms. The Li—N bond lengths vary from 2.020 (7) to 2.441 (6)Å.

Bis(2-nitrophenyl) selenide, bis(2-aminophenyl) selenide and bis(2-aminophenyl) telluride: structural and theoretical analysis

2021 ◽  
Vol 77 (6) ◽  
Author(s):  
Raju Saravanan ◽  
Harkesh B. Singh ◽  
Ray J. Butcher
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Weak Interactions ◽  
Intermolecular Hydrogen Bond ◽  
Three Dimensional ◽  
Molecular Structures ◽  
Aim Analysis ◽  
Hydrogen Bond Interaction ◽  
Dimensional Array ◽  
Pyramidal Geometry

Three organoselenium and organotellurium compounds containing ortho substitutents, namely, bis(2-nitrophenyl) selenide, C12H8N2O4Se, 2, bis(2-aminophenyl) selenide, C12H12N2Se, 3, and bis(2-aminophenyl) telluride, C12H12N2Te, 7, have been investigated by both structural and theoretical methods. In the structures of all three compounds, there are intramolecular contacts between both Se and Te with the ortho substituents. In the case of 2, this is achieved by rotation of the nitro group from the arene plane. For 3, both amino groups exhibit pyramidal geometry and are involved in intramolecular N—H...Se interactions, with one also participating in intermolecular N—H...N hydrogen bonding. While 3 and 7 are structurally similar, there are some significant differences. In addition to both intramolecular N—H...Te interactions and intermolecular N—H...N hydrogen bonding, 7 also exhibits intramolecular N—H...N hydrogen bonding. In the packing of these molecules, for 2, there are weak intermolecular C—H...O contacts and these, along with the O...N interactions mentioned above, link the molecules into a three-dimensional array. For 3, in addition to the N—H...N and N—H...Se interactions, there are also weak intermolecular C—H...Se interactions, which also link the molecules into a three-dimensional array. On the other hand, 7 shows intermolecular N—H...N interactions linking the molecules into R 2 2(16) centrosymmetric dimers. In the theoretical studies, for compound 2, AIM (atoms in molecules) analysis revealed critical points in the Se...O interactions with values of 0.017 and 0.026 a.u. These values are suggestive of weak interactions present between Se and O atoms. For 3 and 7, the molecular structures displayed intramolecular, as well as intermolecular, hydrogen-bond interactions of the N—H...N type. The strength of this hydrogen-bond interaction was calculated by AIM analysis. Here, the intermolecular (N—H...N) hydrogen bond is stronger than the intramolecular hydrogen bond. This was confirmed by the electron densities for 3 and 7 [ρ(r) = 0.015 and 0.011, respectively].

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