A Novel Luminescent μ4-Selenido-Bridged Copper (I) Tetramer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)3459-3462
Journal / PublicationInorganic Chemistry
Volume35
Issue number12
Publication statusPublished - 1996
Externally publishedYes

Abstract

A novel soluble tetranuclear copper (I) cluster containing an unsubstituted μ4-selenido moiety, [Cu4(μ-dppm)4-(μ4-Se)]2+ (1), has been synthesized and characterized by X-ray crystallography. Its photophysical and electrochemical properties have been studied. It is envisaged that the emissions of 1 are associated with a ligand-to-metal charge-transfer LMCT [(Se2-) → Cu4] triplet excited state, and probably with mixing of a metal-centered (3d94s1) Cu (I) state. The phosphorescent state of 1 undergoes facile electron-transfer quenching with a series of pyridinium acceptors. An excited-state reduction potential, E°[Cu4(μ-dppm)44-Se) 3+/2+*], of -1.55(10) V vs SSCE has been estimated. Crystal data: monoclinic, space group C2/c (No. 15), a = 27.913(9) Å, b = 16.512-(9) Å, c = 24.10(1) Å, β = 109.29(2)°, V = 10483(5) Å3, Z = 4.

Citation Format(s)

A Novel Luminescent μ4-Selenido-Bridged Copper (I) Tetramer. / Yam, Vivian Wing-Wah; Lo, Kenneth Kam-Wing; Cheung, Kung-Kai.

In: Inorganic Chemistry, Vol. 35, No. 12, 1996, p. 3459-3462.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review