Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Polish Journal of Chemistry

1 2009

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Synthesis and Characterization of Two Novel Inorganic-Organic Hybrid Materials Based on Polyoxotungstoborate: [L-C2H5NO2-H]3[H2BW12O40]ź5H2O and [CH4N2O-H]2[H3BW12O40]ź5H2O (C2H5NO2 = Glycine; CH4N2O = Urea)

Alizadeh M. H., Eshtiagh-Hosseini H., Mirzaei M., Hosseini-Nejad M.

Polish Journal of Chemistry

2009

Vol. 83, nr 9

1583-1589

Two novel hy drated in or ganic-or ganic hy brids, namely [L-C2H5NO2-H]3[H2BW12O40]ź ź5H2O (1) and [CH4N2O-H]2[H3BW12O40]ź5H2O (2), where C2H5NO2 and CH4N2O are glycine and urea, respectively, have been synthesized and characterized by CHN microanalysis, IR, UV, and 1H NMR spectroscopies. According to the obtained results, molecular structure of 1 consists of tungstoborate anions linked to glycinium cations via van der Waals interactions and hydrogen bonding. Three [L-C2H5NO2-H]+ moieties encompass each [H2BW12O40]3- and, almost certainly, the same is true for 2. The O atoms of polyoxometalates and water, as well as the N atoms of L-glycine and urea are in volved in hydrogen bonding. Characteristic UV bands of the Keggin anion, alfa-H5[BW12O40]ź ź19H2O, are observed at 257 nm, as would be expected.