Russian Journal of Inorganic Chemistry, Tập 41,Số phát hành 9-12British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1996 |
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Trang 1706
... signal P ( 8 = 20 ppm ) , B ( 3 ) ; ( b ) B ( OH ) 3 — H2O - KOH system at pH 8.8 , signal P ( 8 = 18.6 ppm ) , B ( 3 ) and B ( 4 ) , signal M ( 8 = 2.2 ppm ) , B ( 4 ) ; ( c ) the same system at pH 9.2 , signal N ; ( d ) the same ...
... signal P ( 8 = 20 ppm ) , B ( 3 ) ; ( b ) B ( OH ) 3 — H2O - KOH system at pH 8.8 , signal P ( 8 = 18.6 ppm ) , B ( 3 ) and B ( 4 ) , signal M ( 8 = 2.2 ppm ) , B ( 4 ) ; ( c ) the same system at pH 9.2 , signal N ; ( d ) the same ...
Trang 1745
... signal assignments and varia- tions in the intensities of the 19F NMR signals , the for- mation of the mixed - ligand fluoro complexes can be presented by the following scheme : A13 ++ 1.1F + 2.5ida pH 7 0.09 [ AlFidaOH ] 2 ( H ) + 0.12 ...
... signal assignments and varia- tions in the intensities of the 19F NMR signals , the for- mation of the mixed - ligand fluoro complexes can be presented by the following scheme : A13 ++ 1.1F + 2.5ida pH 7 0.09 [ AlFidaOH ] 2 ( H ) + 0.12 ...
Trang 1747
... signal broadening ( ca. 2000 Hz ) and a shift of the signal to 28 ppm . The 27Al NMR spectra of the A13 + -F -- H3nta solu- tions ( pH 8 , F : Al ~ 2.9 , nta : Al ~ 2.0 ) show two signals at 14.9 ( 250 Hz ) and 22.2 ppm ( 450 Hz ) with ...
... signal broadening ( ca. 2000 Hz ) and a shift of the signal to 28 ppm . The 27Al NMR spectra of the A13 + -F -- H3nta solu- tions ( pH 8 , F : Al ~ 2.9 , nta : Al ~ 2.0 ) show two signals at 14.9 ( 250 Hz ) and 22.2 ppm ( 450 Hz ) with ...
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absorption according acid addition analysis angles anion aqueous atoms bands bond calculated cations Chem chemical Chemistry cm-¹ complexes composition compounds concentration constants containing cooling coordination Copyright corresponding crystals curves decrease dependence described determined distances effect electron energy equilibrium experimental extraction formation groups heating higher hydrogen increase indicates Inorganic Institute intensity interaction ions Khim layers ligand magnetic measured melting metal method mixture molecules Moscow Neorg observed obtained occurs Original oxidation oxygen parameters patterns peak phase positions potassium powder diffraction precipitate prepared properties Publishing range ratio reaction Received REFERENCES respectively Russian salt samples Sciences shows signal similar sodium solid solubility solution space group spectra spectrum stability stage structure studied surface synthesis Table temperature thermal tion unit cell values X-ray diffraction yield