Template synthesis and crystal structure of an asymmetric square-planar complex: Pyridine-2,6-dicarbaldehyde-bis(S-methylisothiosemicarbazonato)nickel(II) iodide

2005 ◽  
Vol 50 (2) ◽  
pp. 217-223 ◽  
Author(s):  
J. I. Gradinaru ◽  
S. T. Malinovskii ◽  
M. A. Popovici ◽  
M. Gdaniec
Keyword(s):  
Crystal Structure ◽  
Template Synthesis ◽  
Synthesis And Crystal Structure ◽  
Planar Complex ◽  
Square Planar

Synthesis and crystal structure analyses of tri-substituted guanidine-based copper(II) complexes

2021 ◽  
Vol 76 (3-4) ◽  
pp. 193-199
Author(s):  
Muhammad Said ◽  
Sadia Rehman ◽  
Muhammad Ikram ◽  
Hizbullah Khan ◽  
Carola Schulzke
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Molecular Structures ◽  
Hydroxyl Groups ◽  
Synthesis And Crystal Structure ◽  
Pyramidal Geometry ◽  
Tautomeric Forms ◽  
Square Planar ◽  
Nitrogen Donor ◽  
Square Pyramidal Geometry

Abstract Three guanidine-derived tri-substituted ligands viz. N-pivaloyl-N′,N″-bis-(2-methoxyphenyl)guanidine (L1), N-pivaloyl-N′-(2-methoxyphenyl)-N″-phenylguanidine (L2) and N-pivaloyl-N′-(2-methoxyphenyl)-N″-(2-tolyl)guanidine (L3) were reacted with Cu(II) acetate to produce the corresponding complexes. The significance of the substituent on N″ for the resulting molecular structures and their packing in the solid state has been studied with respect to the structural specifics of the corresponding Cu(II) complexes. The key characteristic of the guanidine-based metal complexation with Cu(II) is the formation of an essentially square planar core with an N2O2 donor set. As an exception, in the complex of L1, the substituent’s methoxy moiety also interacts with the Cu(II) center to generate a square-pyramidal geometry. The hydroxyl groups of the imidic acid tautomeric forms of L1–L3, in addition to N″, are also bonded to Cu(II) in all three complexes rather than the nitrogen donor of the guanidine motif.

scholarly journals Synthesis and crystal structure of [Pd{C6H4(CH2NHCH2Ph)-2-κ2C,N}(μ-I)]2

2017 ◽  
Vol 73 (11) ◽  
pp. 1612-1615
Author(s):  
Delia Bautista ◽  
Sergio J. Benitez-Benitez
Keyword(s):  
Crystal Structure ◽  
Significant Influence ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Coordination Environment ◽  
Synthesis And Crystal Structure ◽  
Square Planar ◽  
Intermolecular Contacts ◽  
Type C ◽  
Methyl Phenyl

The binuclear title complex, di-μ-iodido-bis({2-[(benzylamino-κN)methyl]phenyl-κC1}palladium(II)), [Pd2I2(C14H14N)2], was prepared by reaction of [Pd{C6H4(CH2NHCH2Ph)-2}(μ-OAc)]2with NaI. It crystallizes with one discrete molecule in the asymmetric unit. The molecule presents an iodide-bridged dimeric structure with acisoidarrangement with respect to theC,N-cyclopalladated ligands. Both PdIIatoms have a slightly distorted square-planar coordination environment. Weak intermolecular contacts of the type C—H...Pd seem to have a significant influence on the arrangement of the molecules along thebaxis in the crystal.

Synthese und Kristallstruktur von N,N′-Bis(trimethylsilyl)benzamidinato-dichlorogold, Ph— C(NSiMe3)2AuCl2 / Synthesis and Crystal Structure of N,N′-Bis(trimethylsilyl)benzamidinato-dichlorogold, Ph — C(NSiMe3)2AuCl2

1989 ◽  
Vol 44 (9) ◽  
pp. 999-1002 ◽  
Author(s):  
Wolfgang Hiller ◽  
Joachim Strähle ◽  
Alfred Zinn ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Gold Atom ◽  
Chlorine Atoms ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Square Planar

Ph—C(NSiMe3)2AuCl2 has been prepared by the reaction of N,N,N′-tris(trimethylsilyl)-benzamidine with AuCl3 in CH2Cl2 suspension, forming orange-red crystals, which were characterized by an X-ray structure determination.Space group P21/n, Z = 4, 2358 observed independent reflexions, R = 0.028. Lattice dimensions (20°C): a = 695.9(3); b = 1576.1(3); c = 1830.9(3) pm; β = 94.27(3)°. The compound forms monomeric molecules, in which the gold atom is in a square planar arrangement of the two nitrogen atoms of the benzamidinato chelate (Au—N 201.6(7); 203.3(6) pm) and by two chlorine atoms (Au—Cl 227.9(3); 228.5(2) pm).

Synthesis and crystal structure of a palladium(II) complex with the amino acid L-citrulline

2015 ◽  
Vol 30 (4) ◽  
pp. 357-361 ◽  
Author(s):  
Bruno Z. Mascaliovas ◽  
Fernando R.G. Bergamini ◽  
Alexandre Cuin ◽  
Pedro P. Corbi
Keyword(s):  
Crystal Structure ◽  
Amino Acid ◽  
Real Space ◽  
Molecular Formula ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Cell Parameters ◽  
Square Planar ◽  
Ir Spectroscopic

Synthesis and structural characterization of a novel palladium Pd(II) complex with the amino acid L-citrulline (Cit, C6H13N3O3) are presented in this paper. Elemental analysis indicates a 1:2 metal/ligand molar composition for the complex, with the molecular formula PdC12H24N6O6. The compound was also characterized by infrared (IR) spectroscopic measurements and the crystal structure has been solved by powder X-ray diffraction data with simulated annealing strategy in real space. The Pd(II) complex crystallizes in the triclinic system with space group P-1 and cell parameters a = 4.6493(4) Å, b = 5.222(4) Å, c = 18.040(2) Å, α = 77.41(6)°, β = 94.72(7),° and γ = 101.45(7)°. The crystal structure confirms the presence of Pd(II) ions in a nearly square planar environment and the molecular formula with deprotonated citrulline as proposed by analytical and spectroscopic data.

Hypervalent Intramolecular Coordination in Main Group Chemistry: A Template Synthesis and Crystal Structure of an Ortho-Oximinoarylphosphonium Salt

2002 ◽  
Vol 2002 (11) ◽  
pp. 537-539 ◽  
Author(s):  
David W Allen ◽  
Mark E Light ◽  
Michael B. Hursthouse
Keyword(s):  
Crystal Structure ◽  
Template Synthesis ◽  
Main Group ◽  
Intramolecular Coordination ◽  
Synthesis And Crystal Structure ◽  
Main Group Chemistry ◽  
Catalysed Reaction

The nickel(II)-catalysed reaction of triphenylphosphine with the oxime of ortho-bromoacetophenone gives an ortho-oximinoarylphosphonium salt, which shows a hypervalent intramolecular coordinative interaction between the oximino-nitrogen and the phosphonium centre.

Synthese und Kristallstruktur einer mit dem Johillerit verwandten Verbindung CdCu1,5Mg1,5Pb0,5O12 / Synthesis and Crystal Structure of a Johillerite Related Compound CdCu1,5Mg1,5Pb0,5O12

1995 ◽  
Vol 50 (8) ◽  
pp. 1158-1162 ◽  
Author(s):  
S. Münchau ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Related Compound ◽  
Monoclinic Symmetry ◽  
Steel Tubes ◽  
Synthesis And Crystal Structure ◽  
Square Planar ◽  
Symmetry Space ◽  
Symmetry Space Group ◽  
Additional Point ◽  
Closed Steel

Single crystals of CdCu1.5Mg1.5Pb0.5V3O12 have been prepared in closed steel tubes using V2O5 as a flux. The orange crystals show monoclinic symmetry, space group C62h-C2/c, a = 12.417(5), b = 12.983(6), c = 6.911(3) Å , β = 113.02(1)°, Z = 4. CdCu1.5Mg1.5Pb0.5V3O12 reveals a relationship to the Johillerite type, but it is characterized by an additional point position for cadmium, situated between the square planar CuO4 polygons of the Johillerite structure.

One-pot template synthesis and crystal structure of two new polyaza copper(II) complexes

2003 ◽  
Vol 6 (1) ◽  
pp. 38-42 ◽  
Author(s):  
Yi He ◽  
Hui-Zhong Kou ◽  
Yong Li ◽  
Bei Chuan Zhou ◽  
Ming Xiong ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Template Synthesis ◽  
One Pot ◽  
Synthesis And Crystal Structure

Effect of weak hydrogen bonding and included solvent on the crystal structure of the square-planar complex trans-Pt{PPh2(C16H15)}2Cl2

1998 ◽  
Vol 22 (12) ◽  
pp. 1311-1313 ◽  
Author(s):  
Priya Suman ◽  
Philip W. Dyer ◽  
Paul J. Dyson ◽  
Stuart L. James ◽  
Jonathan W. Steed
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Planar Complex ◽  
Square Planar ◽  
Weak Hydrogen Bonding

scholarly journals Synthesis and crystal structure of dichlorido(1,10-phenanthroline-κ2N,N′)gold(III) hexafluoridophosphate

2017 ◽  
Vol 73 (7) ◽  
pp. 1048-1051 ◽  
Author(s):  
Raphael Enoque Ferraz de Paiva ◽  
Douglas Hideki Nakahata ◽  
Pedro Paulo Corbi
Keyword(s):  
Crystal Structure ◽  
Crystal Packing ◽  
Chloride Ions ◽  
Mass Spectrometric ◽  
Spectrometric Analysis ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Square Planar ◽  
Phenanthroline Ligand

A gold(III) salt of composition [AuCl2(C12H8N2)]PF6was prepared and characterized by elemental and mass spectrometric analysis (ESI(+)–QTOF–MS),1H nuclear magnetic resonance measurements and by single-crystal X-ray diffraction. The square-planar coordination sphere of AuIIIcomprises the bidentate 1,10-phenanthroline ligand and two chloride ions, with the AuIIIion only slightly shifted from the least-squares plane of the ligating atoms (r.m.s. = 0.018 Å). In contrast to two other previously reported AuIII-phenantroline structures that are stabilized by interactions involving the chlorido ligands, the packing of the title compound does not present these features. Instead, the hexafluoridophosphate counter-ion gives rise to anion...π interactions that are a crucial factor for the crystal packing.

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