Synthesis, electrochemistry, photophysics, and solvatochromism in new cyclometalated 6-phenyl-4-(p-R-phenyl)-2,2'-bipyridyl (R = Me, COOMe, P(O)(OEt)2) (C--N--N) platinum(II) thiophenolate chromophores

Inorganic Chemistry
Jacob SchneiderRichard Eisenberg

Abstract

Three new cyclometalated 6-phenyl-4-(p-R-phenyl)-2,2'-bipyridyl (C--N--N) Pt(II) thiophenolate complexes (R = Me (2a), COOMe (2b), and P(O)(OEt)(2) (2c)) have been synthesized and studied. The new C--N--N ligands L2 (R = COOMe) and L3 (R = P(O)(OEt)(2)) undergo cyclometalation with a Pt(II) source to give the Pt(II) chloro complexes 1b and 1c, respectively, which are luminescent in fluid solution with lambda(max) approximately 575 nm, assigned to a metal-to-ligand charge-transfer ((3)MLCT) emissive state. Reaction of the chloro complexes 1a (R = Me), 1b, and 1c with sodium thiophenolate gives 2a-2c, respectively, in good yields. The novel thiophenolate complexes have two interesting absorption bands in their electronic spectra tentatively assigned to a charge-transfer to C--N--N ((1)CT) (lambda(abs) approximately 415 nm) transition and a mixed metal/ligand-to-ligand' charge-transfer (MMLL'CT, lambda(abs) approximately 555 nm) transition, respectively. The MMLL'CT band is solvatochromic with absorption maxima in the range of 496 nm in MeOH to 590 nm in toluene (epsilon approximately 4000 dm(3) mol(-1) cm(-1)), which correlate well with an empirical charge-transfer-based solvent scale. Excitation of 2a-2c into the MMLL'CT band gi...Continue Reading

References

Mar 28, 1996·Chemical Reviews·Neil G. Connelly, William E. Geiger
Jul 18, 2002·Chemical Communications : Chem Comm·Julia A WeinsteinMichael W George
Oct 29, 2002·Inorganic Chemistry·Qing-Zheng YangChen-Ho Tung
Jul 15, 2004·Dalton Transactions : an International Journal of Inorganic Chemistry·Craig R BrodieJanice R Aldrich-Wright
Aug 18, 2004·Inorganic Chemistry·Qing-Zheng YangChen-Ho Tung
Nov 26, 2004·Journal of the American Chemical Society·Paul T FurutaJean M J Fréchet
Mar 1, 2005·Inorganic Chemistry·Keith Man-Chung WongVivian Wing-Wah Yam
Oct 26, 2005·Inorganic Chemistry·Wei LuJacqueline K Barton
Jun 15, 2006·Journal of the American Chemical Society·Pingwu DuRichard Eisenberg
Dec 21, 2006·Proceedings of the National Academy of Sciences of the United States of America·Cong YuVivian Wing-Wah Yam
Mar 24, 2007·Inorganic Chemistry·Elena ShikhovaFelix N Castellano
Apr 19, 2007·Inorganic Chemistry·Bhavna HiraniMark E Thompson
Nov 10, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Nial J WheateJanice R Aldrich-Wright

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Citations

Oct 23, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Fabian GeistRainer F Winter
Apr 9, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Mahmood Azizpoor FardJohn F Corrigan
Jan 24, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Abbas Raja NaziruddinLuisa De Cola
Nov 13, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Amit Saha RoyPrasanta Ghosh
Jun 10, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Tao WangMao-Ping Song
Oct 14, 2017·Chemistry : a European Journal·Stuart A ArcherJulia A Weinstein
Sep 27, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Naveen Kumar AllampallyLuisa De Cola

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