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 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 cis-(Di-2-pyridylamine-κ2N2,N2′)bis(thiocyanato-κS)platinum(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m440-m440
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Complex Molecules ◽  
Square Planar ◽  
Supramolecular Chains ◽  
Planar Environment

In the title complex, [Pt(NCS)2(C10H9N3)], the PtIIion is four-coordinated in a distorted square-planar environment by the two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and two mutuallycisS atoms from two linear thiocyanate anions. The dpa ligand is not planar, the dihedral angle between the pyridine rings being 30.8 (4)°. In the crystal, the complex molecules are stacked in columns along theaaxis and are connected by intermolecular N—H...N hydrogen bonds, forming supramolecular chains along thebaxis.

scholarly journals Tetrakis(azido-κN)(di-2-pyridylamine-κ2N2,N2′)platinum(IV)

2012 ◽  
Vol 68 (4) ◽  
pp. m447-m447 ◽  
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Complex Molecules ◽  
Distorted Octahedral Environment ◽  
Octahedral Environment ◽  
Centroid Distance ◽  
Distorted Octahedral ◽  
A Chain ◽  
Ring Centroid

In the title complex, [Pt(N3)4(C10H9N3)], the PtIVion is six-coordinated in a slightly distorted octahedral environment by the two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and four N atoms from four azide anions. The dpa ligand is not planar, the dihedral angle between the pyridine rings being 20.0 (3)°. The azide ligands are slightly bent [N—N—N = 173.5 (8)–175.1 (8)°]. In the crystal, the complex molecules are connected by N—H...N hydrogen bonds, forming a chain along thebaxis. An intermolecular π–π interaction between the chains is also present, the ring centroid–centroid distance being 3.713 (4) Å.

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 {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.

scholarly journals Bis(acetato-κO)(di-2-pyridylamine-κ2N2,N2′)palladium(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m502-m502
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Type Species ◽  
Chelate Ring ◽  
Title Complex ◽  
Boat Conformation ◽  
Complex Molecules ◽  
Carboxylate Groups ◽  
Square Planar ◽  
Anionic Ligands ◽  
Monodentate Ligands

In the title complex, [Pd(CH3COO)2(C10H9N3)], the PdIIion is four-coordinated in a slightly distorted square-planar environment by two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and two O atoms from two anionic acetate ligands. The dpa ligand coordinates the PdIIatom in a boat conformation of the resulting chelate ring; the dihedral angle between the pyridine rings is 39.3 (2)°. The two acetate anions coordinate the PdIIatom as monodentate ligands and are located on the same sides of the PdN2O2unit plane. The carboxylate groups of the anionic ligands appear to be delocalized on the basis of the C—O bond lengths. Two complex molecules are assembled through intermolecular N—H...O hydrogen bonds, forming a dimer-type species. Intermolecular C—H...O hydrogen bonds further stabilize the crystal structure.

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 (2,2′-Bipyridine-κ2N,N′)bis(nitrato-κ2O,O′)copper(II)

2013 ◽  
Vol 69 (11) ◽  
pp. m609-m609 ◽  
Author(s):  
Feng-Yi Liu ◽  
Ming-Hui Zhang ◽  
Jun-Feng Kou
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Supramolecular Architecture ◽  
Complex Molecules ◽  
Centroid Distance ◽  
Bipyridine Ligand ◽  
Nitrate Anions

In the title complex, [Cu(NO3)2(C10H8N2)], the CuIIcation is chelated by two nitrate anions and by one 2,2′-bipyridine ligand in a distorted N2O4octahedral geometry. The dihedral angle between the pyridine rings is 1.92 (11)°. In the crystal, π–π stacking between parallel pyridine rings of adjacent complex molecules is observed, the centroid–centroid distance being 3.6788 (19) Å. Weak C—H...O hydrogen bonds further link the molecules into a three-dimensional supramolecular 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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