Hydrothermal synthesis and crystal structure of a layered vanadium phosphate with a directly coordinated organonitrogen ligand: [V4O7(HPO4)2(2,2′-bipy)2]

Dehydrogenative coupling of 2,2 ′ -bipyridine: hydrothermal synthesis and crystal structure of a novel polyoxovanadate decorated with the 2,2 ′ ;6 ′ ,2″;6″,2 ′′′ -quaterpyridine ligand

“…Recently, an important advance in this field is that the organic components act as ligands directly coordinated to the inorganic scaffoldings or to the secondary metal centers [12,13]. On the basis of this mode, a large variety of organic-inorganic hybrid materials belonging to the {M x L y /V/O}system (M ¼ transition metal, L ¼ organic ligand) have been isolated [12][13][14][15][16]. However, few examples involving the in situ reaction of the organic ligand have been reported.…”

Metallic macrocycles built-up from ferrocenedicarboxylate and ancillary nitrogen heterocycles: Hydrothermal synthesis, crystal structures and electrochemical properties

“…Such factors could control the size of the MOMs, where the number of components is usually controlled by the bending torsion angle of ferrocenyl moieties [16]. Finally, it is well-known that the incorporation of a secondary ligand capable to coordinate in a chelate mode is also required; such condition provides a way to the passivation of metal sites by N donors, avoiding spatial propagation of the resulting metal-organic array [21,[23][24][25][26] prepared and most of them have shown a polymeric crystal structure [20][21][22][27][28][29][30][31][32][33]. In this work we used 1,1 0 -ferrocenedicarboxylic acid with different chelate nitrogen heterocycles as ligands (2,2 0 -bipy 1,10 0 -phen and 5,5 0 -dimethyl-2,2 0 -bipy) combined with Co(CH 3 COO) 2 Á4H 2 O or Cu(CH 3 COO) 2 ÁH 2 O, which reacted under hydrothermal conditions.…”

Exploiting the linking propensity of a water encapsulated POV cluster anion [As6V15O42(H2O)]6− towards lanthanide cations: Syntheses, crystal structures and thermal properties of [{M(H2O)7}2(As6V15O42(H2O)]·xH2O (M=La3+, Sm3+ and Ce3+; x=12, 13 and 11, respectively)

“…Polyoxovanadates (POVs) are a subclass of POMs, that show considerable interest in the field of catalysis and magnetism because of the flexible oxidation state of vanadium (V IV to V V and vice versa). Among POVs, a major subclass is V/As/O heteropoly-system that is not as explored as V-O (or) V-P-O system [6][7][8][9][10][11][12][13][14][15][16]. In general, V/As/O heteropoly-systems can be divided into five different groups based on the number of As and V atoms present in these clusters [17][18][19][20][21][22] 26 ] nÀ .…”