Dawson结构钨钛磷杂多配合物^(183)WNMR谱的研究

^(183)WNMR study of tungstotitanphosphate heteropoly complexes with dawson structure

研究了Dawson结构取代原子数与相应的183 WNMR谱中“极位”W原子的化学位移值间的关系 .预测了α - 1 ,2 [P2 W16Ti2 O62 ]10 -,α - 1 ,2 - [P2 W16(TiO2 )2 O60 ]10 -“极位”W原子183 WNMR谱化学位移值 ,结果α - 1 ,2 - [P2 W16Ti2 O62 ]10 -和α - 1 ,2 - [P2 W16(TiO2 ) 2 O60 ]10 -中与取代Ti相连“极位”W原子的化学位移值分别为 :- 5 9.3ym ,- 66.5ym ;与取代Ti相对称“极位”W原子的化学位移值分别为 :- 1 49.3ym ,- 1 62 .6ym ;与取代Ti不对称“极位”W原子的化学位移值分别为 :- 1 2 5 .4ym ,-1 31 .4ym .

The relation between the numbers of substitution atoms and δ( 183 WNMR)walues of 'polar' W atoms were investigated.The values of chemical shifts of 'polar' W atom in α -1,2-[P 2W 16 Ti 2O 62 ] 10- and in α -1,2-[P 2W 16 (TiO) 2O 60 ] 10- were forecasted.The results in α -1,2-[P 2W 16 Ti 2O 62 ] 10- and α -1,2-[P 2W 16 (TiO) 2O 60 ] 10- showed that the δ values of the W adjacent to Ti was -59.3 ym,-66.5 ym;the δ values of the W 'symmetry-related' to Ti was -149.3 ym,-162.6 ym;the δ values of the W 'non-symmetry-related' to Ti was -125.4 ym,-131.4 ym.