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A novel tetranuclear mixed-metal platinum(II)−copper(I) complex, [Pt 2 (dppm) 2 (C⋮CPh) 4 ·{Cu(MeCN)} 2 ](PF 6 ) 2, has been synthesized by the reaction of its precursor complex, [Pt 2 (dppm) 2 (C⋮CPh) 4 ], with [Cu(MeCN) 4 ]PF 6 . Their crystal structures and luminescence behavior have been determined. Perturbation of the spectroscopic and emission properties has been accomplished by a change in the Pt···Pt distance as well as the π-acceptor ability of the alkynyl unit via Cu(I) coordination.
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Yam et al. (2001) studied this question.
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