摘要
首次合成出两种未见文献报导的杂多化合物2[N(C_4H_9)_4]_2O·8MoO_3·1/2 V_2O_5·8SiO_2·6H_2O和1.15[N(C_4H_9)_4]_2O·7MoO_3·1/2 V_2O_5·8H_2O,并测定了它们的IR、UV、XRD、TG和DTA。前者对光敏感,放置时由黄变绿,其酸溶液可被乙醚萃取,生成醚合物;其酸不稳定,放置时即分解而出现沉淀,得不到固体酸,其阴离子与四丁基铵阳离子之间有较强的相互作用。后者的酸溶液也不稳定,放置时亦分解而出现沉淀;其阴离子与四丁基铵之间的作用与前者不同,它对光不敏感。
Two compounds, 2[N(C_4H_9)_4]_2O·8MoO_3·1/2V_2O_5·8SiO_2·6H_2O and 1.15 [N(C_4H_9)_4]_2O·7MoO_3·1/2V_2O_58H_2O, have been syuthesized and their IR, UV, XRD, TG and DTA are measured for the first time. Their acid solution is not stable and the solid acid can not crystalize from their acid solution, but the heteropolymolybdovanadosilicate acid can be extracted by ether, and the isopolymolybdovanadate acid can not be done. The former is sensitive to sunlight and it changes from yellow to green in the presence of sunlight. It has been concluded that the former HPA exists in both solid state and aquoes solution. Compared with tetrabutylammoniumbromide, stronger interactions between [N(C_4H_9)_4]^+ and the HPAs are observed in their IR, TG and DTA curves.
关键词
杂多化合物
钼
钒
硅
无机化学
heteropolyacid, molybdenum, vanadium, silicon.
