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 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 (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 (2,3-Di-2-pyridylpyrazine-κ2 N 2,N 3)diiodidoplatinum(II)

2012 ◽  
Vol 68 (6) ◽  
pp. m834-m834 ◽  
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Dihedral Angle ◽  
Layer Structure ◽  
Title Complex ◽  
Maximum Deviation ◽  
Hydrogen Bond Acceptor ◽  
Pyrazine Ring ◽  
Square Planar

The PtII ion in the title complex, [PtI2(C14H10N4)], exists in a distorted square-planar environment defined by the two pyridine N atoms of the chelating 2,3-di-2-pyridylpyrazine ligand and two iodide anions. The pyridine rings are inclined to the least-squares plane of the PtI2N2 unit [maximum deviation = 0.070 (3) Å] at 66.1 (2) and 65.9 (2)°; the pyrazine ring is perpendicular to this plane [dihedral angle = 89.7 (2)°]. Two intermolecular C—H...I hydrogen bonds, both involving the same I atom as hydrogen-bond acceptor, generate a layer structure extending parallel to (001). Molecules are stacked in columns along the a axis. Along the b axis, successive molecules stack in opposite directions.

scholarly journals Crystal structure of bis(2-{1-[(E)-(4-fluorobenzyl)imino]ethyl}phenolato-κ2N,O)palladium(II)

2015 ◽  
Vol 71 (4) ◽  
pp. 350-353
Author(s):  
Amalina Mohd Tajuddin ◽  
Hadariah Bahron ◽  
Hamizah Mohd Zaki ◽  
Karimah Kassim ◽  
Suchada Chantrapromma
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Schiff Base Ligands ◽  
Bond Lengths ◽  
Square Planar ◽  
Coordination Plane

The asymmetric unit of the title complex, [Pd(C15H13FNO)2], contains one half of the molecule with the PdIIcation lying on an inversion centre and is coordinated by the bidentate Schiff base anion. The geometry around the cationic PdIIcentre is distorted square planar, chelated by the imine N- and phenolate O-donor atoms of the two Schiff base ligands. The N- and O-donor atoms of the two ligands are mutuallytrans, with Pd—N and Pd—O bond lengths of 2.028 (2) and 1.9770 (18) Å, respectively. The fluorophenyl ring is tilted away from the coordination plane and makes a dihedral angle of 66.2 (2)° with the phenolate ring. In the crystal, molecules are linked into chains along the [101] direction by weak C—H...O hydrogen bonds. Weak π–π interactions with centroid–centroid distances of 4.079 (2) Å stack the molecules alongc.

scholarly journals Bis{benzyl 2-[4-(4-methoxyphenyl)butan-2-ylidene]hydrazinecarbodithioato-κ2 N 2,S}nickel(II)

2012 ◽  
Vol 68 (6) ◽  
pp. m725-m726 ◽  
Author(s):  
Ming-Yueh Tan ◽  
Thahira Begum S. A. Ravoof ◽  
Mohamed Ibrahim Mohamed Tahir ◽  
Karen A. Crouse ◽  
Edward R. T. Tiekink
Keyword(s):  
Least Squares ◽  
Dihedral Angle ◽  
Crystal Packing ◽  
Chelate Ring ◽  
Title Complex ◽  
Planar Geometry ◽  
Square Planar ◽  
Supramolecular Chains ◽  
Chelate Rings

The complete molecule of the title complex, [Ni(C19H21N2OS2)2], is generated by the application of twofold symmetry. The NiII atom is N,S-chelated by two hydrazinecarbodithioate ligands, which provide an N2S2 donor set that defines a distorted square-planar geometry, the S atoms being approximately cis. The conformation of the chelate ring is an envelope with the NiII atom being the flap atom. The dihedral angle between the least-squares planes through the chelate rings = 30.10 (6)°. Supramolecular chains propagated by glide symmetry along the c axis and mediated by C—H...N contacts feature in the crystal packing.

A new polymorph of (dimethyl 5,6,7,8,15,16-hexahydro-6,7-dioxo-5,8,14,17-tetraazadibenzo[a,g]cyclotetradecine-13,18-dicarboxylato-κ4 N)nickel(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m870-m872
Author(s):  
Chang-Qing Li ◽  
Li-Na Zhu ◽  
Xiao-Zeng Li ◽  
Rong Li
Keyword(s):  
Hydrogen Bonds ◽  
Macrocyclic Ligand ◽  
Three Dimensional ◽  
Title Complex ◽  
Planar Geometry ◽  
Supramolecular Network ◽  
Stacking Interactions ◽  
Complex Molecules ◽  
Π Stacking ◽  
Square Planar

A new polymorph of the title complex, [Ni(C22H18N4O6)], has been synthesized and structurally characterized. Ni(II) is coordinated by the four nitrogen donors of the macrocyclic ligand with a distorted square-planar geometry. C—H...O hydrogen bonds and π...π stacking interactions link the complex molecules, forming an infinite three-dimensional supramolecular network.

Bis[(1,3-benzothiazol-2-ylsulfanyl)acetato-κO]bis(imidazole-κN 3)copper(II)

2007 ◽  
Vol 63 (11) ◽  
pp. m2821-m2821
Author(s):  
He-Dong Bian ◽  
Fu-Ping Huang ◽  
Qing Yu ◽  
Hong Liang
Keyword(s):  
Hydrogen Bonds ◽  
Layer Structure ◽  
Title Complex ◽  
Intermolecular Hydrogen Bonds ◽  
Complex Molecules ◽  
Square Planar

In the title complex, [Cu(C9H6NO2S2)2(C3H4N2)2], the CuII atom, lying on an inversion centre, is coordinated by two O atoms and two N atoms in a geometry deviating slightly from square planar. Intermolecular hydrogen bonds link the complex molecules into a layer structure.

scholarly journals Bis(azido-κN)(di-2-pyridylamine-κ2N2,N2′)palladium(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m519-m519
Author(s):  
Kwang Ha
Keyword(s):  
Hydrogen Bonds ◽  
Least Squares ◽  
Dihedral Angle ◽  
Title Complex ◽  
Dihedral Angles ◽  
Boat Conformation ◽  
Coordination Environment ◽  
Square Planar

In the title complex, [Pd(N3)2(C10H9N3)], the PdIIion is in a slightly distorted square-planar coordination environment. The ligator atoms comprise the two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and two N atoms from two azide anions. The dpa ligand coordinates the Pd atom in a boat conformation, the dihedral angle between the pyridine rings being 24.4 (1)°. The pyridine rings are somewhat inclined to the least-squares plane of the PdN4unit, making dihedral angles of 29.02 (9) and 26.47 (9)°. The azide ligands are slightly bent, with N—N—N angles of 173.0 (4) and 174.2 (4)°. In the crystal, molecules are connected by N—H...N and C—H...N hydrogen bonds, forming chains along thecaxis. When viewed down thebaxis, successive chains are stacked in opposite directions. Intramolecular C—H...N hydrogen bonds are also observed.

scholarly journals Crystal structure oftrans-dichloridobis[N-(5,5-dimethyl-4,5-dihydro-3H-pyrrol-2-yl-κN)acetamide]palladium(II) dihydrate

2017 ◽  
Vol 73 (4) ◽  
pp. 528-530 ◽  
Author(s):  
Jamal Lasri ◽  
Naser Eltaher Eltayeb ◽  
Matti Haukka ◽  
Bandar A. Babgi
Keyword(s):  
Crystal Structure ◽  
Nitrogen Atom ◽  
Hydrogen Bonds ◽  
Bond Cleavage ◽  
Title Complex ◽  
Organic Ligands ◽  
Double Layers ◽  
Complex Molecules ◽  
Square Planar

The title complex, [PdCl2(C8H14N2O)2]·2H2O, was obtained by N–O bond cleavage of the oxadiazoline rings of thetrans-[dichlorido-bis(2,5,5-trimethyl-5,6,7,7a-tetrahydropyrrolo[1,2-b][1,2,4]oxadiazole-N1)]palladium(II) complex. The palladium(II) atom exhibits an almost square-planar coordination provided by twotrans-arranged chloride anions and a nitrogen atom from each of the two neutral organic ligands. In the crystal, N—H...O, O—H...O and O—H...Cl hydrogen bonds link complex molecules into double layers parallel to thebcplane.

scholarly journals Bis(4-hydroxy-3-methoxybenzaldehyde 4-phenylthiosemicarbazonato-N1,S)nickel(II)

2014 ◽  
Vol 70 (5) ◽  
pp. m195-m195 ◽  
Author(s):  
Adriano Bof de Oliveira ◽  
Bárbara Regina Santos Feitosa ◽  
Christian Näther ◽  
Inke Jess
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Complex Molecules ◽  
Square Planar ◽  
Discrete Complex ◽  
Planar Environment

In the title compound, [Ni(C15H14N3O2S)2], the NiIIatom lies on a center of symmetry. The deprotonated ligands act asN,S-donors, forming five-membered metalla-rings. The NiIIatom is four-coordinated in a slightly distorted square-planar environment. In the crystal, the discrete complex molecules are linked by weak N—H...O hydrogen bonds, generating chains along [110]. The chains are further connectedviaweak O—H...N interactions into a layered network extending parallel to (001).

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