scholarly journals Redetermination of (2,2′-bipyridine-κ2N,N′)dichloridopalladium(II) dichloromethane solvate

2009 ◽  
Vol 65 (6) ◽  
pp. m615-m616 ◽  
Author(s):  
Nam-Ho Kim ◽  
In-Chul Hwang ◽  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Structure Refinement ◽  
Chloride Ions ◽  
Fourier Synthesis ◽  
Complex Molecules ◽  
Bipy Ligand ◽  
Π Interactions ◽  
Centroid Distance ◽  
Square Planar ◽  
Difference Fourier

In the title compound, [PdCl2(C10H8N2)]·CH2Cl2, the Pd2+ion is four-coordinated in a slightly distorted square-planar environment by two N atoms of the 2,2′-bipyridine (bipy) ligand and two chloride ions. The compound displays intramolecular C—H...Cl hydrogen bonds and pairs of complex molecules are connected by intermolecular C—H...Cl hydrogen bonds. Intermolecular π–π interactions are present between the pyridine rings of the ligand, the shortest centroid–centroid distance being 4.096 (3) Å. As a result of the electronic nature of the chelate ring, it is possible to create π–π interactions to its symmetry-related counterpart [3.720 (2) Å] and also with a pyridine ring [3.570 (3) Å] of the bipy unit. The present structure is a redetermination of a previous structure [Vicenteet al.(1997). Private communication (refcode PYCXMN02). CCDC, Cambridge, England]. In the new structure refinement all H atoms were located in a difference Fourier synthesis. Their coordinates were refined freely, together with isotropic displacement parameters.

scholarly journals (Di-2-pyridylamine-κ2N2,N2′)diiodidoplatinum(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m479-m479 ◽  
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Type Species ◽  
Title Complex ◽  
Complex Molecules ◽  
Π Interactions ◽  
Centroid Distance ◽  
Square Planar ◽  
Ring Centroid ◽  
Planar Environment

The PtIIion in the title complex, [PtI2(C10H9N3)], is four-coordinated in a distorted square-planar environment defined by the two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and by two I−anions. The dpa ligand is not planar, the dihedral angle between the pyridine rings being 52.8 (3)°. Pairs of complex molecules are assembled through intermolecular N—H...I hydrogen bonds, forming a dimer-type species. The complexes are stacked in columns along thebaxis and display several intermolecular π–π interactions between the pyridine rings, with a shortest ring centroid–centroid distance of 3.997 (5) Å.

scholarly journals (2,2′-Bipyridine-κ2N,N′)dichloridopalladium(II) 1,4-dioxane hemisolvate

2014 ◽  
Vol 70 (6) ◽  
pp. m218-m218 ◽  
Author(s):  
Ricardo Alfredo Gutiérrez Márquez ◽  
Carmela Crisóstomo-Lucas ◽  
David Morales-Morales ◽  
Simón Hernández-Ortega
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Complex Molecule ◽  
Inversion Symmetry ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Centroid Distance ◽  
Square Planar ◽  
Chloride Ligands ◽  
Bipyridine Ligand

The asymmetric unit of the title compound, [PdCl2(C10H8N2)]·0.5C4H8O2, consists of one PdIIcomplex molecule and a half-molecule of 1,4-dioxane, the complete molecule being generated by inversion symmetry. The PdIIatom has an almost square-planar coordination formed by the 2,2′-bipyridine ligand and two chloride ligands. Two intramolecular C—H...Cl hydrogen bonds occur. In the crystal, the PdIIcomplex and 1,4-dioxane molecules are connected by C—H...O hydrogen bonds, forming a layer parallel to (10-1). Within the layer, weak π–π interactions [centroid–centroid distance = 3.817 (4) Å] are observed between the pyridine rings.

scholarly journals {4,4′-Dichloro-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethanylylidene)]diphenolato}copper(II)

2012 ◽  
Vol 68 (8) ◽  
pp. m1135-m1135 ◽  
Author(s):  
Hadi Kargar ◽  
Reza Kia ◽  
Fatemeh Ganji ◽  
Valiollah Mirkhani
Keyword(s):  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Schiff Base Complex ◽  
Tetradentate Ligand ◽  
Base Complex ◽  
Π Interactions ◽  
Centroid Distance ◽  
Square Planar ◽  
Benzene Rings

In the title Schiff base complex, [Cu(C19H18Cl2N2O2)], the CuIIion is coordinated in a distorted square-planar environment by two N atoms and two O atoms of the tetradentate ligand. The dihedral angle between the benzene rings is 36.86 (14)°. In the crystal, molecules are linked into inversion dimers by pairs of weak C—H...O hydrogen bonds. In addition, π–π [centroid–centroid distance = 3.7279 (16) Å] and weak C—H...π interactions are observed.

catena-Poly[[[(pyrazino[2,3-f][1,10]phenanthroline)copper(II)]-μ-4,4′-oxydibenzoato] monohydrate]

2007 ◽  
Vol 63 (11) ◽  
pp. m2823-m2823
Author(s):  
Chun-Bo Liu ◽  
Yang Liu ◽  
Lu Lu ◽  
Jun Sun
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Supramolecular Structure ◽  
Helical Chain ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
Π Interactions ◽  
Centroid Distance ◽  
Square Planar ◽  
Phenanthroline Ligands

In the title compound, {[Cu(C14H8O5)(C14H8N4)]·H2O} n , the CuII atom adopts a distorted cis-CuN2O2 square-planar coordination geometry. 4,4′-Oxydibenzoate (L) ligands link the CuII atoms, generating a helical chain. Neighbouring chains are linked through π–π interactions between pyrazino[2,3-f][1,10]phenanthroline ligands with a centroid–centroid distance of ca 3.44 Å, resulting in a two-dimensional supramolecular structure. The structure is completed by O—H...O hydrogen bonds.

scholarly journals Diaquadichloridobis[quinazolin-4(1H)-one-κN 3]nickel(II)

2012 ◽  
Vol 68 (6) ◽  
pp. m724-m724
Author(s):  
Shirin Shomurotova ◽  
Kambarali K. Turgunov ◽  
Nasir Mukhamedov ◽  
Bakhodir Tashkhodjaev
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Chloride Ions ◽  
Water Molecules ◽  
Supramolecular Network ◽  
Inversion Center ◽  
Intermolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Centroid Distance ◽  
Benzene Rings

In the title complex, [NiCl2(C8H6N2O)2(H2O)2], the NiII ion is located on an inversion center and is six-coordinated by two N atoms of 1H-quinazolin-4-one ligands, two chloride ions and two water molecules. The water molecules are involved in intra- and intermolecular O—H...O and O—H...Cl hydrogen bonding. Intermolecular N—H...O and N—H...Cl hydrogen bonds are formed between ligands. In addition, weak π–π interactions are observed between the benzene rings of the ligands [centroid–centroid distance = 3.580 (3) Å]. The intermolecular hydrogen bonds and π–π interactions lead to the formation of a three-dimensional supramolecular network.

scholarly journals Dibromido(di-2-pyridylamine-κ2N2,N2′)platinum(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m453-m453 ◽  
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Complex Molecules ◽  
Π Interactions ◽  
Square Planar ◽  
Planar Environment

The PtIIion in the title complex, [PtBr2(C10H9N3)], is four-coordinated in an essentially square-planar environment by two N atoms from a chelating di-2-pyridylamine (dpa) ligand and two Br−anions. The dpa ligand is not planar, with the dihedral angle between the pyridine rings being 40.8 (2)°. The complex molecules are stacked in columns along [001] through π–π interactions between the pyridine rings [centroid–centroid distances = 3.437 (3) and 3.520 (3) Å]. Intermolecular N—H...Br hydrogen bonds connect the molecules into chains running along [010]. Intramolecular C—H...Br interactions are also observed.

scholarly journals Crystal structure of diaquatris(1-ethyl-1H-imidazole-κN3)(sulfato-κO)nickel(II)

2016 ◽  
Vol 72 (3) ◽  
pp. 374-377 ◽  
Author(s):  
Tamas Holczbauer ◽  
Attila Domjan ◽  
Csaba Fodor
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Complex Molecules ◽  
Coordination Environment ◽  
Π Interactions ◽  
Dimeric Unit ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Distorted Octahedral ◽  
Imidazole Ligands

In the title complex, [Ni(SO4)(C5H8N2)3(H2O)2], the NiIIion is coordinated by three facial 1-ethyl-1H-imidazole ligands, one monodentate sulfate ligand and two water molecules in a slightly distorted octahedral coordination environment. In the crystal, two pairs of O—H...O hydrogen bonds link complex molecules, forming inversion dimers incorporatingR24(8),R22(8) andR22(12) rings. The dimeric unit also contains two symmetry-unique intramolecular O—H...O hydrogen bonds. In addition, weak C—H...O hydrogen bonds, weak C—H...π interactions and π–π interactions with a centroid–centroid distance of 3.560 (2) Å combine to form a three-dimensional network. One of the ethyl groups is disordered over two sets of sites with occupancies in the ratio 0.586 (7):0.414 (7).

scholarly journals Dichlorido(ethanol-κO)[2-(1,3-thiazol-4-yl-κN)-1H-benzimidazole-κN3]copper(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m508-m508
Author(s):  
Long Li ◽  
Kai-Sheng Diao ◽  
Yu-Qiu Ding ◽  
Jin-Niu Tang ◽  
Dai-Yin Wang
Keyword(s):  
Hydrogen Bonds ◽  
Title Complex ◽  
Complex Molecules ◽  
Ethanol Molecule ◽  
Π Interactions ◽  
Pyramidal Geometry ◽  
Centroid Distance ◽  
Square Pyramidal Geometry ◽  
Cl Atoms

In the title complex, [CuCl2(C10H7N3S)(C2H5OH)], the CuIIion is five-coordinated in a distorted square-pyramidal geometry by two N atoms from a 2-(1,3-thiazol-4-yl)-1H-benzimidazole ligand, one O atom from an ethanol molecule and two Cl atoms. In the crystal, O—H...Cl and N—H...Cl hydrogen bonds link the complex molecules into a layer parallel to (100). π–π interactions between the thiazole rings are observed [centroid–centroid distance = 3.749 (3) Å].

scholarly journals [1,4-Bis(diphenylphosphanyl)butane-κ2P,P′]dibromidopalladium(II)

2014 ◽  
Vol 70 (2) ◽  
pp. m41-m41
Author(s):  
Kwang Ha ◽  
Yo Soon Song
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Title Complex ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Coordination Geometry ◽  
Complex Molecules ◽  
Centroid Distance ◽  
Square Planar ◽  
Phenyl Rings

In the title complex, [PdBr2(C28H28P2)], the PdIIion has a distortedcis-Br2P2square-planar coordination geometry defined by two P atoms from the chelating 1,4-bis(diphenylphosphanyl)butane ligand and two Br−anions. The four phenyl rings are inclined to the least-squares plane of the PdBr2P2unit [maximum deviation = 0.1294 (7) Å], making dihedral angles of 66.3 (2), 87.2 (2), 68.8 (2) and 86.8 (2)°. The butylene chain is in agaucheconformation, with a C—C—C—C torsion angle of 57.0 (8)°. Intermolecular C—H...Br hydrogen bonds link the complex molecules into supramolecular layers in theabplane. Weak π–π interactions, both intra- and intermolecular [shortest inter-centroid distance = 4.598 (5) Å], are also noted in the three-dimensional architecture.

scholarly journals N′-(3-Hydroxybenzylidene)-4-methylbenzohydrazide

2012 ◽  
Vol 68 (6) ◽  
pp. o1816-o1816
Author(s):  
Ji-Lai Liu ◽  
Ming-Hui Sun ◽  
Jing-Jun Ma
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Aromatic Rings ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

The title compound, C15H14N2O2, was obtained from the reaction of 3-hydroxybenzaldhyde and 4-methylbenzohydrazide in methanol. In the molecule, the benzene rings form a dihedral angle of 2.9 (3)°. In the crystal, N—H...O and O—H...O hydrogen bonds link the molecules into layers parallel to (101). The crystal packing also exhibits π–π interactions between the aromatic rings [centroid–centroid distance = 3.686 (4) Å].

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