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Kết quả 1-3 trong 43
Trang 1257
{ H } 3C NMR spectra were recorded on a DPX - 250 Bruker instrument at 30 ° C . The chemical shifts & are referred to tetramethylsilane . In water - acetone solu- tions , acetone was used as the secondary standard ( the chemical shift ...
{ H } 3C NMR spectra were recorded on a DPX - 250 Bruker instrument at 30 ° C . The chemical shifts & are referred to tetramethylsilane . In water - acetone solu- tions , acetone was used as the secondary standard ( the chemical shift ...
Trang 1398
The remaining long - wavelength vibrations are , as rule , composite and involve comparable shifts of atoms of both ... in contrast to neighboring vibrations of the cage , experi- ences a considerable hypsochromic shift , which mono- ...
The remaining long - wavelength vibrations are , as rule , composite and involve comparable shifts of atoms of both ... in contrast to neighboring vibrations of the cage , experi- ences a considerable hypsochromic shift , which mono- ...
Trang 1401
The highest fre- quencies of C - C stretches of the cage , which undergo small long - wavelength shifts on the order of 10-15 cm - 1 ( in going from He , to Ar4 ) , also have low intensities . As we emphasized in [ 1-3 ] , moderate and ...
The highest fre- quencies of C - C stretches of the cage , which undergo small long - wavelength shifts on the order of 10-15 cm - 1 ( in going from He , to Ar4 ) , also have low intensities . As we emphasized in [ 1-3 ] , moderate and ...
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Vol 49 No 8 | 1136 |
Synthesis and Characterization of Some Rubidium Orthoperiodates | 1143 |
Interaction of Zirconium Yttrium and Zinc Tetrahydroborate Complexes | 1154 |
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absorption According acid addition analysis angles anion aqueous atoms band bismuth bond cage calculated cations changes Chem chemical Chemistry chloride clusters cm-¹ compared complex composition compounds concentration constants containing coordination Copyright corresponding crystal curves decomposition decrease determined distances effect electronic energy exchange experimental extraction formation frequencies groups heating higher hydrates hydrogen increase Inorg Inorganic interaction ions isomer Khim layer lead lengths ligand measured metal method mixture mol/l molecular molecules Moscow Neorg observed obtained oxide oxygen parameters phase Phys Physics positions prepared presence properties range ratio reaction REFERENCES refined reflections region respectively Russ Russian salt sample Sciences shifts showed sodium solid solution space group spectra spectrum stability stage structure studied synthesis Table temperature thermal tion Translation unit values vibrations X-ray diffraction