The structure of tetraguanidinium pentamolybdodiphenylphosphonate

Abstract

Abstract. [C(NH2)

Multicomponent Polyanions. 53. Structure of Tetrakis(trimethylammonium) Tetra-μ-oxo-bis(triaquahexadecaoxo(trioxophenylphosphato)hexamolybdate) Dihydrate, [NH(CH3)3]4[{(C6H5P)Mo6O21(H2O)3}2].2H2O

“…1.7, 1.9 and 2.3 A Ê , respectively, which are in agreement with earlier results for (C 6 H 5 P) 2 Mo 5 O 4À 21 in Fig. 1 (Lyxell & Strandberg, 1988 …”

“…1.7, 1.9 and 2.3 A Ê , respectively, which are in agreement with earlier results for (C 6 H 5 P) 2 Mo 5 O 4À 21 in Fig. 1 (Lyxell & Strandberg, 1988 coordination of the cation to its environment. As seen in Table 4, the type (I) cation has a more regular form than type (II), which is highly distorted.…”

“…This speciation study was performed in a 0.600 M Na(Cl) medium, where [Na + ] was kept constant while [Cl À ] was allowed to vary. The crystal structure of the Mo 5 (PhP) 2 species has been determined previously (Lyxell & Strandberg, 1988). The polyanion was found to have the common structure for X 2 M 5 -type heteropolyoxometalates ( Fig.…”

A 31P-NMR study of the H+-MoO42−-(HP)O32−-HPO42−-(C6H5P)O32−-(CH3P)O32− system at low Motot/Ptot ratio - Formation of mixed-hetero X2M5-type polyanions

“…The 'symmetric' X2M5-type heteropolyanions, having the same kind of P-containing groups for X, were found in each of these four systems. The structures of the polyanions have been confirmed: phosphate by Strandberg and Hedman, 7 phosphite by Ozeki et al, 8 phenylphosphonate by Lyxell and Strandberg, 9 and methylphosphonate by Stalick and Quicksall. 10 All these complexes have the same basic structure as shown in Fig.…”

Coordination of the carboxylate of the functionalized Strandberg anion in a three dimensional covalence framework

“…), forming Strandberg organophosphonate-polyoxoanion derivatives [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Generally, in constructing organic-inorganic hybrids based on [(RPO 3 ) 2 Mo 5 O 15 ] 4− polyoxoanion, the pending R group in the organophosphonate derivatives [(RPO 3 ) 2 Mo 5 O 15 ] 4− does not participate in coordination to the transition metal center [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]20]. However, when R = −R'PO 3 the R group may take part in coordination to other M atoms, forming polyoxoanion chain in Zubieta's materials [22][23][24][25][26][27][28][29][30][31][32].…”