Structure of complex in gallium trimetaphosprimate Na3Ga(P3O6N3H3)2�12H2O

The Synthesis and Structure of Trimetaphosphimato Complexes of Hafnium and Zirconium

“…[4c] This interaction is also confirmed by the existence of Ag 6 (PO 2 N) 3 , which was first described by Stokes; [2] however, the crystal structure has not yet been determined. The trimetaphosphimate ion can act as a monodentate ligand in combination with monovalent ions such as Na ϩ , K ϩ , Ag ϩ , NH 4 ϩ , or C(NH 2 ) 3 ϩ , [4] as bidentate and bridging ligand , has a tetracoordinated oxygen atom in the middle, and the other cages are formed by the trimetaphosphimate ions acting as tridentate ligands which coordinate to Hf or Zr.…”

“…The reaction of (Table 1), with six edge-bridging OH groups (µ-OH) and one tetracoordinated O atom (µ 4 -O) at the center of the M 4 tetrahedron, thus forming an adamantanoid cage M 4 (µ 4 -O)(µ-OH) 6 8ϩ as shown in Figure 2. The H atoms of the bridging µ-OH groups have not been localized, but on the basis of the analytical results which show the molar ratio to be Na/P/N/M ϭ 1:3:3:1 for all four compounds, the µ-OH groups have to be assumed to be connecting the Zr and Hf atoms.…”

“…The trimetaphosphimate ions exhibit the chair conformation and are bound to the metal centers through the three oxo groups. The entire complex ion {M 4 (µ 4 -O)(µ-OH) 6 [(PO 2 NH) 3 ] 4 } 4Ϫ , consisting of five corner-linked adamantanoid cages, is shown in Figure 3. Similar to monoclinic ZrO 2 (baddeleyite), and one polymorphic form of HfO 2 , the metal atoms exhibit the coordination number seven.…”

“…DSC measurements gave no evidence that the compounds 1 and 2, or 3 and 4, might be transformed into each other by heating. [6] and as tridentate and bridging ligand in K 1.3 (NH 4 ) 1.7 {Pr[(PO 2 NH) 3 ] 2 } · 8 H 2 O. [7] Figure 1.…”

Triammonium Trimetaphosphimate Monohydrate

“…Although many salts of trimetaphosphimic acid with monovalent cations have been described from as early as 1895 (Stokes, 1895) and characterized (Herzog & Nielsen, 1958), only the crystal structures of Na3(PO2NH)3.4H20, H3(PO2NH)3.2H20 and (NH4)H2(PO2NH)3.CH3OH have been reported (Attig & Mootz, 1976;Olthof, Migchelsen & Vos, 1965). Trimetaphosphimate salts with divalent and trivalent cations have also been described (Sokol, Porai-Koshits, Berdnikov, Rozanov & Butman, 1979;Rozanov, Medvedeva, Beresnev, Sokolov & Sokol, 1981).…”