“…29 Avoiding halides may also be necessary in some cases, while compounds such as hydrochloric acid can be formed during synthesis, thus creating an acidic environment which may be undesirable. 30 However, niobium and tantalum alkoxides (dimers at room temperature) are relatively sensitive to atmospheric moisture via the following reaction [31][32][33][34] (M ¼ Nb, Ta; R ¼ methyl, ethyl):…”