| Inorganic microporous materials have popular applications in catalysis, adsorption, ion-exchange, separation and host-guest assemblies due to their unique pore architectures, thus the rational design and synthesis of new microporous compounds, as well as the development of new synthetic ways are becoming the central topic of microporous materials chemistry. Zeolites (aluminosilicates) are the most well-known microporous molecular sieves. During the past decades, a huge number of new zeolite-like inorganic solids like phosphates, arsenates, germanates, phosphite, sulfate, selenite, carbonate have been synthesized and characterized. The successful syntheses of these new compounds with open-framework open a new field for the microporous compounds.In this paper, we have obtained the phosphite compounds (1-5) and sulfate compounds (6-7) by using template or structural directing agent under the hydro/solvothermal conditions . The main results are as follow:Compound Co(HPO3)(py) (1) possesses a 1D ladder-like framework constructed from CoO3N tetrahedral and HPO32- pseudo-pyramid.Compound [Co(OH)(py)3][Co(py)2][HPO2(OH)]3 (2) is an unusual 1D chain consisted of corner-shared six-membered rings.Compounds [Zn2 (H2O)4 (HPO3)2]·H2O (3) and [Co(H2O)4Zn(HPO3)2]·H2O (4) are purely inorganic 3D open-framework with intersecting 12- and 16-membered ring channels. The structure of compound 3 and 4 consists of corner-shared four-membered-ring chains formed by alternating ZnO4 tetrahedra and HPO3 pseudo-pyramids, which are further linked through ZnO2(H2O)4 or CoO2(H2O)4 octahedra giving rise to a 3D open-framework.Compound (NH4)[{Zn(H2O)4}0.5Zn2(HPO3)3] (5): The connectivity of ZnO4 tetrahedra, HPO3 pseudo-pyramids and ZnO2(H2O)4 octahedra results in macroanionic layers with 4.8-net.Both of the 1D polymer chain {[Cu4(μ4-O)(py)4(SO4)4][μ-Cu(py)(DMF)2]}n (6) and {[Cu4(μ4-O)(py)4(SO4)4][μ-Cu(py)4]}n (7) are based on tetranuclear copper (II) building blocks. Tetranuclear clusters are bridged by single copper atoms through the sulfate oxygen to form the infinite one-dimensional polymer chains.Compound 8 [Cu(SO4)(C5H6N2)2(C3H7NO)2] is the monomer. One-dimensional chain supramolecular structure is built via hydrogen bonds. |
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