Luminescence Behavior of Polynuclear Alkynylcopper(I) Phosphines |
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| Authors: | Vivian Wing-Wah Yam Wendy Kit-Mai Fung Kung-Kai Cheung |
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| Affiliation: | (1) Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China |
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| Abstract: | A series of soluble trinuclear and tetranuclear copper(I) complexes containing  3- l acetylides ![$$[{text{Cu}}_{text{3}} (mu {text{ - dppm}})_3 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CR}})]^{2 + } ,[{text{Cu}}_{text{3}} (mu {text{ - dppm}})_3 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CR}})_2 ]^ + $$](/content/t5054u4302w2038j/10876_2004_Article_422561_TeX2GIFIE1.gif) , and ![$$[{text{Cu}}_{text{4}} ({text{PPh}}_{text{3}} )_4 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CR}})_4 ]$$](/content/t5054u4302w2038j/10876_2004_Article_422561_TeX2GIFIE2.gif) have been synthesized and shown to exhibit rich photoluminescent behavior at room temperature. The electrochemistry of the trinuclear Cu(I) acetylide complexes and the excited-state redox properties of ![$$[{text{Cu}}_{text{3}} (mu {text{ - dppm}})_3 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CC}}_{text{6}} {text{H}}_{text{4}} {text{OMe - }}p)_2 ]^ + $$](/content/t5054u4302w2038j/10876_2004_Article_422561_TeX2GIFIE3.gif) have been investigated. The X-ray crystal structures of ![$$[{text{Cu}}_{text{3}} (mu {text{ - dppm}})_3 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CC}}_{text{6}} {text{H}}_{text{4}} {text{OMe - }}p)_2 ]^ + $$](/content/t5054u4302w2038j/10876_2004_Article_422561_TeX2GIFIE4.gif) and ![$$[{text{Cu}}_{text{4}} ({text{PPh}}_{text{3}} )_4 (mu _3 {text{ - }}eta ^{text{1}} {text{ - C}} equiv {text{CC}}_{text{6}} {text{H}}_{text{4}} {text{OMe - p}})_4 ]$$](/content/t5054u4302w2038j/10876_2004_Article_422561_TeX2GIFIE5.gif) have been determined. |
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| Keywords: | Acetylide copper(I) luminescence tetranuclear trinuclear |
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