Cadmium Iodide Complex with 4-Aminomethylbenzoic Acid: Synthesis, Crystal Structure, and Luminescent Properties


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Abstract

[СdI2(4-АmbaH)2] · H2O has been synthesized by the reaction between CdI2 and 4-aminomethylbenzoic acid (4-AmbaH) in an aqueous solution. According to X-ray diffraction data, a 4-AmbaH aromatic molecule crystallizes in the form of a zwitterion with protonation of the NH3+ amino group and deprotonation of the carboxylate group, which is chelately coordinated to the Cd2+ ion. In addition to two iodine atoms, the Cd2+ atom located on the double crystallographic axis is coordinated to the chelate carboxylate O(1) and O(2) atoms of two crystallographically equivalent ligands 4-AmbaH. The octahedral geometry of the Cd2+ ion is strongly distorted due to the chelate addition of 4-AmbaH. The chelate coordination of COO–groups is confirmed by IR spectroscopy data. The complex has luminescent properties.

About the authors

Yu. V. Kokunov

Kurnakov Institute of General and Inorganic Chemistry

Email: kovavlad@igic.ras.ru
Russian Federation, Moscow, 119991

V. V. Kovalev

Kurnakov Institute of General and Inorganic Chemistry

Author for correspondence.
Email: kovavlad@igic.ras.ru
Russian Federation, Moscow, 119991

Yu. E. Gorbunova

Kurnakov Institute of General and Inorganic Chemistry

Email: kovavlad@igic.ras.ru
Russian Federation, Moscow, 119991

G. A. Razgonyaeva

Kurnakov Institute of General and Inorganic Chemistry

Email: kovavlad@igic.ras.ru
Russian Federation, Moscow, 119991

S. A. Kozyukhin

Kurnakov Institute of General and Inorganic Chemistry

Email: kovavlad@igic.ras.ru
Russian Federation, Moscow, 119991

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