Structure and Spectral Properties of Pyrazine Ligand Assisted Self-Assembly of a Coordination Polymer Containing Copper-Cyanide Building Blocks |
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| Authors: | Safaa Eldin H Etaiw Safaa N Abdou |
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| Affiliation: | 2. Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
1. Chemistry Department, Faculty of Education and Science (Khourma), Taif University, Taif, Saudi Arabia
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| Abstract: | The metal–organic framework $ ^{3}_{\infty } \left {{\text{Cu}}_{3} \left( {\text{CN}} \right)_{3} \cdot \left( {\text{pyz}} \right)_{ 2} } \right] $ ∞ 3 Cu 3 ( CN ) 3 · ( pyz ) 2 ] , 1, (pyz pyrazine) was prepared in water/acetonitrile solvent at ambient temperature from the adducts K3Cu(CN)4], pyrazine and Me2SnCl2. The structure of 1 consists of four-coordinate Cu(1) sites exhibiting a distorted tetrahedral geometry and the linear two-coordinate Cu(2) sites. Notably distorted cages, Cu8(CN)4(pyz)4], Cu8(CN)6(pyz)2] and Cu6(CN)2(pyz)4], can be considered as the basic building blocks of the structure of 1. Box-like structures create inextricably interpenetrated equivalent 3D-frameworks. The structure and spectroscopic properties of 1 were also investigated by thermal analysis and IR, mass, UV/Vis and fluorescence spectra. |
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