Tetrahedral Mn(II) bromo- and iodo-complexes with phosphoramidate and phosphonate ligands were synthesized and characterized. Mononuclear complexes with the general formula [MnX2L2] were isolated by using the monodentate ligands OQP(OPh)2(NMe2) and OQP(OPh)2Ph. The bidentate resorcinol derivative 1,3-OQP(NMe2)O–C6H4–O(NMe2)2PQO behaved as a bridging ligand, and afforded, by reaction with MnX2 salts, a dinuclear complex in the case of X = Br and a coordination polymer for X = I, as revealed by single crystal X-ray diffraction. All the compounds showed the characteristic green photoluminescence of Mn(II) in a tetrahedral environment. The resulting lifetime values were influenced by the symmetry of the compounds. The complexes with OQP(OPh)2(NMe2) in the coordination sphere showed high photoluminescence quantum yields.

Manganese(ii) bromo- and iodo-complexes with phosphoramidate and phosphonate ligands: synthesis, characterization and photoluminescence

Bortoluzzi, Marco
;
Di Vera, Andrea;Ferraro, Valentina
2021

Abstract

Tetrahedral Mn(II) bromo- and iodo-complexes with phosphoramidate and phosphonate ligands were synthesized and characterized. Mononuclear complexes with the general formula [MnX2L2] were isolated by using the monodentate ligands OQP(OPh)2(NMe2) and OQP(OPh)2Ph. The bidentate resorcinol derivative 1,3-OQP(NMe2)O–C6H4–O(NMe2)2PQO behaved as a bridging ligand, and afforded, by reaction with MnX2 salts, a dinuclear complex in the case of X = Br and a coordination polymer for X = I, as revealed by single crystal X-ray diffraction. All the compounds showed the characteristic green photoluminescence of Mn(II) in a tetrahedral environment. The resulting lifetime values were influenced by the symmetry of the compounds. The complexes with OQP(OPh)2(NMe2) in the coordination sphere showed high photoluminescence quantum yields.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10278/3741672
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