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Spectroscopy, Photophysical Properties and Crystal Structures of Luminescent Diplatinum(I) Complexes of Bis(diphenylphosphino)methane

DOI: 10.1039/DT9930000179

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 179 - 188 (1993)

Update date:2022-08-03

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Authors:

Yip, Hon-KayYip, Hon-Kay

Che, Chi-MingChe, Chi-Ming

Peng, Shie-MingPeng, Shie-Ming

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Article abstract of DOI:10.1039/DT9930000179

The reactions of quinoline (quin), 1-methylimidazole (mim), 4-tert-butylpyridine (4But-py) and 2,4,6-trimethylpyridine (tmpy) with in methanol yielded (2+), (2+), t-py)2>(2+) and (1+), respectively.The complexes were isolated as either hexafluorophosphate or perchlorate salts.The crystallographically measured intramolecular Pt-Pt distances are 2.615(1), 2.580(1) and 2.627(2) Angstroem for (2+), (2+) and (1+) respectively, indicating the presence of a single Pt-Pt bond.The (1)H and (31)P NMR spectra of the complexes have been recorded.Solution UV/VIS spectra of the four new complexes as well as those of 2 and 2 (py = pyridine) were recorded.The lowest-energy absorption band is assigned to a 1(d?* -> d?*) transition.All of the diplatinum complexes display solid-state luminescence at room temperature and at 77 K with long emission lifetimes.

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