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Chloro(2-

Du¹, Weng, Leng

¹Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.

Acta Crystallographica. Section C, Crystal Structure Communications

|September 15, 2000

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This study details the crystal structure of a cadmium(II) complex, revealing a five-coordinate Cd(II) center within a distorted square pyramid geometry. The complex forms a hydrogen-bonded dimer through intermolecular O-H.O interactions.

Area of Science:

Inorganic Chemistry
Crystal Engineering
Coordination Chemistry

Background:

Understanding the coordination behavior of metal ions is crucial in developing new materials.
Crystal structure analysis provides fundamental insights into molecular interactions and solid-state properties.
Hydrogen bonding plays a significant role in supramolecular assembly and material design.

Purpose of the Study:

To elucidate the crystal structure of the cadmium(II) complex [Cd(C(20)H(25)N(2)O(2))Cl].
To investigate the coordination environment and geometry around the Cd(II) center.
To characterize the intermolecular interactions, particularly hydrogen bonding, within the crystal lattice.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.

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Structural analysis focused on coordination geometry, ligand conformation, and intermolecular contacts.

Hydrogen bond analysis was performed to identify and quantify O-H.O interactions.

Main Results:

The crystal structure reveals a hydrogen-bonded dimer formed by neutral molecules of the cadmium(II) complex.
The cadmium(II) center exhibits five-coordinate geometry, best described as a distorted square pyramid.
The 1,5-diazacyclooctane backbone adopts a boat/chair conformation, and intermolecular O-H.O hydrogen bonds link inversion-related molecules.

Conclusions:

The study successfully determined the detailed crystal structure of the [Cd(C(20)H(25)N(2)O(2))Cl] complex.
The formation of a hydrogen-bonded dimer is a key feature of the solid-state structure.
The findings contribute to the understanding of cadmium coordination chemistry and supramolecular assembly driven by hydrogen bonding.