Cu(i) Iodide coordination polymers with aromatic thioamides. Issue 33 (10th August 2020)

• Record Type: Journal Article
• Authors: Rosendo, Paula; Perles, Josefina; Zamora, Félix; Delgado, Salome
• Is Part Of: CrystEngComm. Volume 22:Issue 33(2020)
• Page Start: 5447
• Page End: 5452
• Publication Date: 2020-08-10
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d0ce00969e
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : The reaction of 4-pyridinethiobenzamide (PyTBA) with CuI and KI aqueous solution in acetone or THF under slow diffusion gives rise to the formation of single crystals of two coordination polymers [CuIPyTBA] n · n S (S = acetone; 1/3THF). Abstract : The reaction of 4-pyridinethiobenzamide (PyTBA) with CuI and KI aqueous solution in acetone or THF as a solvent under slow diffusion gives rise to the formation of single crystals of two coordination polymers of formula [CuIPyTBA] n · n S (S = acetone (1 ); 1/3THF (2 )). X-ray diffraction analysis of compounds 1 and 2 shows that they consist of a 2D layered network formed of Cu2 I2 units linked both by pyridinic N and S atoms from two PyTBA ligands. The metal–organic network creates voids that are occupied by the solvent molecules. The similar direct reaction carried out at room temperature between a mixture of CuI and PyTBA in acetone leads to the isolation of a microcrystalline red solid which is a mixture of [CuIPyTBA] n · n acetone (1 ) and [CuIPyTBA] n (3 ). The thermal treatment of this mixture allows 3 to be isolated in its pure form. The structure from the X-ray diffraction data of 3 reveals that it consists of a 3D interpenetrated non-porous network of formula [CuIPyTBA] n (3 ). The exposure of 3 to acetone leads to a mixture of 1 and 3, while the heating of this mixture results in a complete transformation into 3 . This desolvated–solvated transformation observed in 3 has been analysed and rationalized based on the X-ray structures of the coordination polymers.