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- W2055726329 abstract "Hexanuclear Zr(IV) oxo carboxylate derivatives of the general formula [Zr 6 O 4 (OH) 4 (OOCR′) 12 ] (R′ = Bu t ( 1 ), C(CH 3 ) 2 Et ( 2 )) were synthesized from Zr(OR) 4 (R = Pr i , C(CH 3 ) 2 Et) and appropriate organic acids (HOOCR′, R′ = Bu t , C(CH 3 ) 2 Et) in a molar ratio 1:2. The structure of these compounds consists of hexanuclear Zr(IV) clusters formed by six zirconium atoms, linked by 4:4 system of μ 3 -oxo/hydoxy bridges and stabilized by syn – syn carboxylate groups. Results of crystallographic and spectroscopic data suggest that in [Zr 6 (μ 3 -O 4 )(μ 3 -OH) 4 ] clusters four protons migrate between eight oxide bridges. Thermal stability studies of 1 and 2 using TGA/DTA and VT IR methods have been carried out. Hexanuclear Zr(IV) oxo carboxylate derivatives of the general formula [Zr 6 O 4 (OH) 4 (OOCR′) 12 ] (R′ = Bu t ( 1 ), C(CH 3 ) 2 Et ( 2 )) were synthesized from Zr(OR) 4 (R = Pr i , C(CH 3 ) 2 Et) and appropriate organic acids (HOOCR′, R′ = Bu t , C(CH 3 ) 2 Et) in a molar ratio 1:2. The crystal structures of 1 and 2 were solved in the centrosymmetric R 3 ¯ space group. Zirconium atoms form hexanuclear Zr(IV) clusters, linked by 4:4 system of μ 3 -oxo/hydoxo bridges and stabilized by syn – syn carboxylate groups. Each of the metal ions is surrounded by eight oxygen atoms derived from four μ 3 -O; oxo/hydroxo bridges, and four μ-O; carboxylate ones. Analysis of crystallographic and spectroscopic data suggests that four protons migrate between eight oxide bridges of the [Zr 6 O 4 (OH) 4 (OOCR′) 12 ] cluster. Thermogravimetric and temperature variable (VT IR) studies have been carried out in order to determine the thermal behaviors of 1 and 2 ." @default.
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- W2055726329 date "2007-02-01" @default.
- W2055726329 modified "2023-10-18" @default.
- W2055726329 title "The new type of [Zr6(μ3-O)4(μ3-OH)4] cluster core: Crystal structure and spectral characterization of [Zr6O4(OH)4(OOCR)12] (R=But, C(CH3)2Et)" @default.
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- W2055726329 doi "https://doi.org/10.1016/j.poly.2006.08.025" @default.
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