A superoctahedral complex derived from a polyoxometalate: the hexakis(arylimido)hexamolybdate anion [Mo6(NAr)6O13H]−

Hydrothermal synthesis and characterization of two novel tungstovanadophosphate derivatives

“…1). The polyoxoanion is a bicapped pseudo-Keggin anion similar to [PMo 8 V 6 O 42 ] n- [31,35], and contains 14 metal atoms including four W, eight (W + V) atoms, and two V atoms at capping positions as well as one P atom at the anionic center. In the polyoxoanion, the central P atom is located at the inversion center, with a distorted {PO 4 } tetrahedron in an orientationally disordered state with site half-occupancy of oxygen, forming a distorted cube.…”

Synthesis and characterization of [NBu 4 ][La(CH 3 OH) 2 (DCU)NO 3 {Mo 5 O 13 (OMe) 4 (NO)}]·CH 3 OH: A novel Lanthanide-substituted Lindqvist-type oxo-nitrosyl polymolybdate

“…The Lindqvist-type POM [M 6 O 19 ] n− (M = Mo, W (n = 2); Ta, Nb (n = 8); V (n = 8)) [6] is one of the typical prototypes among POM structures. The chemical modification of the POM clusters surface mostly focuses on two areas: (1) Organically functionalized POMs with covalently grafted organic ligands [7], a sizable class of derivatives [Mo 6 O 18 (L)] n-, has been prepared based on the process in which one or more terminal oxo ligands within the parent structure is substituted by a nitrogen or an oxygen containing ligand, such as nitrosyl [8][9][10][11][12][13], phenyldiazenido [14][15], alchoholate [16] and organoimido [17][18][19][20][21][22][23][24], which makes the POMs, the physical and chemical properties more tunable. Among [Mo 6 O 18 (L)] n-species, organoimido hexamolybdates [Mo 6 O 18 (NR)] 2-are well proceeded by Peng and Wei [18][19][20][21][22][23][24] with the so-called DCC protocol, which is faster, more efficient and the yields are higher.…”

The comparative investigation on redox property and second-order nonlinear response of Keggin-type α-[PM12O39NPh]3− (M = W and Mo) and Mo6NPh

“…The functionalization by various ligands may provide a way in which these properties can be tuned and modulated. During the past decade, more and more attention has been focused on organoimidoPOMs derivatives [9] , and a large number of Lindqvisttype organoimido derivatives have been continuously synthesized by Maatta [10][11][12][13][14] , Peng [15−19] , and others [20][21][22][23] . As the potential of Keggin or Dawson POM-based molecular materials might be important comparing with Lindqvist derivatives, the high-valent metal nitrido fragments, such as [Re VI ≡N] 3+ , [Os VI ≡N] 3+ , have been incorporated into the framework of a Keggin-type heteropolyanion [24] .…”