[Zn2(HPO3)2(H2PO3)][C3H5N2] and [Zn2(HPO3)3][C4H7N2]2·2H2O: Two new layered zinc phosphites with double 12-membered rings templated by imidazole and 2-methylimidazole

Organically templated open-framework phosphites

“…A third, novel layered structure containing a 4.6.8-net, reminiscent of that found in a series of aluminosilicates with Al 3 P 4 O 16 3À stoichiometry but never seen before in either phosphates or phosphites, is observed in (C 6 N 2 H 16 )Zn 3 (HPO 3 )$H 2 O, 70 shows a new double-layer structure with each layer made of a 3.9-network of strictly alternating ZnO 4 and P-centred units. 72 A double-layer structure is also found in (C 3 N 2 H 5 ) [Zn 2 (HPO 3 ) 2 (H 2 PO 3 )] and (C 4 N 2 H 7 ) 2 [Zn 2 (HPO 3 ) 3 ] $2H 2 O, 73 in which, in contrast to what is usually observed in other zincophosphates and -phosphites, imidazole and 2-methylimidazole molecules do not link to the metal centres but act purely as templating agents. The pattern of the inorganic anionic sheets is very similar for both compounds with a somewhat different connectivity leading in both cases to a 4.8.12-net.…”

Synthesis, characterization and magnetic property of a new 3D iron phosphite: |C4N3H14|[Fe3(HPO3)4F2(H2O)2] with intersecting channels

“…Recently, using pyramidal phosphite groups to substitute tetrahedral phosphate units have resulted in a new class of metal phosphites with great success [11]. And lots of organically templated metal phosphites with extended networks have been synthesized and characterized, such as manganese [12], cobalt [13], zinc [14][15][16][17] and vanadium [18]. Although the tenor of preparation of metal phosphite framework has achieved success, only a few iron phosphite compounds exist [19][20][21][22][23][24][25].…”

“…In the literature, a large number of gallium- [26], indium- [27] and iron- [28] phosphates; as well as, zinc- [14,15,29] and indium- [30] phosphites have been reported. In order to expand the field of research pertaining to iron phosphite materials with excellent properties, our group has chosen to explore the design and synthesis of novel open architectures by introducing the F À anion as mineralizer and organic template as part of our design strategy.…”

Solvothermal synthesis and structure of a novel 3D zincophosphite |Co(en)3|[Zn4(HPO3)5(H2PO3)] containing helical chains

“…Among the metal phosphites, the zincophosphites constitute an important family that exhibits a rich structural and compositional diversity. In 2001, the first organic templated zincophosphite was reported by Harrison et al [4], and considerable interest has been aroused in the study of zincophosphites templated by organic species and metal complexes resulting in the hydrothermal/solvothermal synthesis of more than 30 zincophosphites with novel structures [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. So far, among zincophosphites only a few examples are reported to possess helical features [4,21].…”