Synthesis of some ligands containing 1,2,3,4-thiatriazolium-5-aminide unit and their interactions with metal cations

Add time:09/25/2019    Source:sciencedirect.com

Five new compounds, 6–10, derivatives of mesoionic 3-phenylo-1,2,3,4-thiatriazolium-5-aminide, have been obtained. The structures of the compounds have been investigated by 1H, 13C, 15N NMR and X-ray diffraction. The 15N NMR technique has been used for identification of a heteroatomic backbone of the mesoionic unit. The 15N chemical shifts observed are typical for this class of compounds. However, some unusual 15N shift values have been observed for 9.The structures of compounds 2 and 7–9 have been confirmed by X-ray diffraction. The interactions of the thiatriazoles 6–9 with some salts, CoCl2, Ni(ClO4)2 and Cu(CH3COO)2 in acetonitrile solution, have been studied by visible electronic spectroscopy.

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