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E. A. Katlenok A. A. Zolotarev K. P. Balashev 《Russian Journal of General Chemistry》2014,84(8):1593-1598
Binuclear complexes of Pt(II) cycloplatinated with 2-phenylbenzothiazole and bridging ligands have been shown to contain the Pt-Pt bond. The complexes have been studied by X-ray diffraction, 1H NMR and electronic absorption spectroscopy, and electrochemical methods. The complexes cis-N(bt),S-isomers with antisymmetric positions of the cyclometalated and the bridging ligands have been detected in the crystals as well as in the solutions. The low-wavelength absorption and luminescence of the complexes have been assigned to the metal-metal-ligand charge transfer. The two-electron oxidation and reduction waves in the voltamperograms are associated with the metal- and the ligand-centered processes, respectively. 相似文献
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Russian Journal of General Chemistry - 相似文献
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Rodionova O. A. Finagenova G. O. Puzyk M. V. Balashev K. P. 《Russian Journal of General Chemistry》2010,80(2):370-371
Russian Journal of General Chemistry - 相似文献
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The effect of acidification of water-ethanol solutions of cyclometalated Pt(II) and Pd(II) complexes with ethylenediamine and cyanide ligands is studied. It is found that, unlike the ethylenediamine complexes, the cyclometalated complexes with cyanide ligands are unstable and undergo irreversible decyclometalation. 相似文献
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V. V. Balashev V. V. Korobtsov T. A. Pisarenko E. A. Chusovitin K. N. Galkin 《Physics of the Solid State》2010,52(2):397-403
Ultrathin films of iron silicide have been grown by high-temperature annealing of 0.14-to O.5O-nm-thick Fe films deposited
on the Si(001) surface at room temperature. It has been found that annealing leads to the formation of nanoislands of iron
silicide on the surface, so that their type depends on the thickness of the Fe film. High-energy electron diffraction and
atomic force microscopy measurements have revealed that the deposition of Fe films less than 0.32 nm thick on the Si(001)
surface stimulates epitaxial growth of both three-dimensional β-FeSi2 and two-dimensional γ-FeSi2 islands. It has been found that, for Fe coverages of more than 0.32 nm thick, a complete transition to solide phase epitaxy
is observed only for two-dimensional β-FeSi2 islands. The effect of prolonged annealing at 850°C on the morphology of the surface of the iron silicide film has been investigated. 相似文献
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The cyclometalated [M(pbo)En]PF6(M = Pd(II), Pt(II)), [M(pbo)2En]PF6 (M = Rh(III), Ir(III)), and [Rh(C∧N)2En]PF6 ((C∧N)? are the deprotonated forms of 2-phenylbenzoxazole (pbo), 2,5-diphenyloxazole (dpo), 2-phenylbenzothiazole (pbt), 2-biphenyl-4-yl-5-phenyloxazole (bpo), and 2-biphenyl-4-yl-6-phenylbenzoxazole (bpbo) and En is ethylenediamine) complexes are studied by 1H NMR spectroscopy, IR spectroscopy, and electronic absorption and emission spectroscopy. Metalation of luminophores leads to the formation of five-membered {M(C∧N)} cycles in the composition of plane-square and octahedral complexes of the cis-C,C structure. In addition to the intraligand (IL) π-π* optical transitions in the UV region, the complexes are characterized by long-wavelength metal-to-ligand charge-transfer (MLCT) absorption bands in the region of 366–416 nm. The phosphorescence of the complexes in the visible region (482–531 nm) is attributed to radiative transition from the mixed IL/MLCT electronically excited state. The temperature quenching of the phosphorescence of complexes is attributed to the thermally activated population of metal-centered electronically excited states with subsequent nonradiative deactivation. 相似文献