Related Experiment Video
Updated: Jun 5, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Bis[2-(2-amino-ethyl)-1H-benzimidazole-κN,N]zinc(II) bis-(perchlorate)
Jine Zhang1, Yanping Li, Fangjun Huo
1Institute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
Abstract:
In the title compound, [Zn(C(9)H(11)N(3))(2)](ClO(4))(2), the Zn(II) atom resides on a crystallographic twofold axis and is coordinated by two benzimidazole N [Zn⋯N = 1.993 (4) Å] and two amine N atoms [Zn⋯N = 2.036 (4) Å] in a distorted tetra-hedral geometry. The crystal packing is dominated by N-H⋯O inter-actions involving the perchlorate anions and π-π stacking inter-actions with an inter-planar separation of 3.42 Å. A weak C-H⋯O inter-action is also present.
Related Concept Videos
Diazonium Group Substitution: –OH and –H
Coordination Compounds and Nomenclature
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
Reactions at the Benzylic Position: Halogenation
Complexation Equilibria: The Chelate Effect
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

