摘要:
The complexes [CuL4][O3SCF3] (L = Me2S, Me2Se, Me2Te, Ph2S, Ph2Se or Ph2Te) and [Cu(L-L)2]PF6 [L-L = RE(CH2)2ER (E = S or Se, R = Me or Ph); RE(CH2)3ER (E = S, Se or Te; R = Me or Ph)] have been prepared and characterised by analysis, IR, and in particular multinuclear NMR spectroscopy (H-1, Se-77, Te-125 and Cu-63). Variable-temperature NMR studies have been used to probe various exchange processes occurring in solution. For a limited number of complexes Cu-63 NMR resonances have been observed, the first examples from Group 16 donor complexes.