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Updated: May 13, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
cis-Dichloridobis(2-isocyano-phenyl 4-meth-oxy-benzoate)palladium(II) chloro-form monosolvate
Alexander Tskhovrebov1, Matti Haukka
1Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation.
Abstract:
In the title compound, [PdCl2(C15H11NO3)2]·CHCl3, the Pd(II) atom adopts a slightly distorted square-planar coordination geometry composed of two Cl atoms in cis positions and two C atoms from isocyano-phenyl ligands. The mol-ecular conformation is stabilized by π-π stacking inter-actions [shortest centroid-centroid distance = 3.600 (1) Å] between substituted benzene rings of different ligands. The crystal packing is characterized by C-H⋯O and C-H⋯Cl inter-actions involving the chloro-form solvent mol-ecules.
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Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
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