Hydrothermal synthesis, characterization and properties of bi-capping pseudo-Keggin type tungstovanadophosphate compound:

Two new hydrogen bond-supported supramolecular compounds assembly from tungsten–vanadium polyoxoanions and copper complex fragments

“…To date, only a few compounds incorporating POMs with tetranuclear cations were synthesized [45,[47][48][49][50][51] [51]. To our knowledge, the 1D chain structure of compound 2 is the first example which is based on the tungsten-vanadium mixed metallic polyoxoanions linked by tetranuclear cations.…”

Two new transition-metal complexes (TMCs)-templated three-dimensional supramolecular networks based on tungstovanadophosphates

“…Up to now, owing to the kinetic sluggishness of tungsten relative to molybdates and vanadates, less attention has been paid to the tungstovanadate heteropoly complexes [33][34][35][36][37][38][39][40]. Keeping in mind that tungsten is kinetically inert, the great majority of them are synthesized under hydrothermal conditions.…”

Hydrothermal synthesis and characterization of two novel tungstovanadophosphate derivatives

“…Numerous examples of such 'mixed-addenda' compounds have been described [8][9][10][11]. The surface decoration means that the surface oxygen atoms of the anion are substituted by organic or other groups, forming so-called capped [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], supporting [32,33], and organic group-functionalized POMs [34]. To date, several types of capped POMs have been reported, such as single-capped (pbpy) 4 [27].…”

“…To date, several types of capped POMs have been reported, such as single-capped (pbpy) 4 [27]. Because of the weak reactivity of tungstates relative to molybdates and vanadates, examples of crytallographically characterized capped heteropolytungstates are relatively rare [12,[28][29][30]. Similarly, POMs containing iron complex fragments or cations are seldom reported.…”