Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34566
Title: Synthesis, structures, and electronic spectroscopy of luminescent acetylene- and (buta-1,3-diyne)platinum complexes
Authors: Zhang, K
Hu, J
Chan, KC
Wong, KY 
Yip, JH
Keywords: Spectroscopy
Luminescence
Platinum
Acetylene
Charge-transfer
Issue Date: 2007
Publisher: Wiley-VCH
Source: European journal of inorganic chemistry , 2007, v. 2007, no. 3, p. 384-393 How to cite?
Journal: European journal of inorganic chemistry 
Abstract: The electronic absorption and emission spectroscopy of a series of diphenylaceylene- and (buta-1,3-diyne)-Pt0 complexes (L)Pt[(1,2-η2)-R–(C≡C)n–R] and [(dppp)Pt]2[μ-(1,2-η2):(3,4-η2)-R–(C≡C)2–R] {R = Ph or CH3, L = dppp or(PPh3)2, n = 1 or 2} was investigated. The structures of(dppp)Pt[(1,2-η2)-Ph–C≡C–Ph], (dppp)Pt[(1,2-η2)-PhC4Ph] and [(dppp)Pt]2[μ-(1,2-η2):(3,4-η2)-Ph–(C≡C)2–Ph] were characterized by X-ray diffraction. The complexes all display intense absorptions that were attributed to Pt - P(dπ*) and Pt - acetylene(πx*) transitions. Except for the CH3C4CH3 complexes, the complexes all exhibit two emissions at 380–550 nm and 500–800 nm. The higher energy emission could arise from the 3[P(dπ*) - transition, and the lower energy emission, which has a longer lifetime than the higher energy one, was attributed to the 3[acetylene(πx*) - Pt] transition. The energy of the MLCT absorption and emission was affected by the electronic properties of the acetylenes and the ancillary phosphanes.
URI: http://hdl.handle.net/10397/34566
ISSN: 1434-1948
EISSN: 1099-0682
DOI: 10.1002/ejic.200600773
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