Abstract
The metal-organic framework , 1, (pyz pyrazine) was prepared in water/acetonitrile solvent at ambient temperature from the adducts K-3[Cu(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, [Cu-8(CN)(4)(pyz)(4)], [Cu-8(CN)(6)(pyz)(2)] and [Cu-6(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.