[{Zn₂(HPO₄)₄}{Co(dien)₂}]⋅H₃O: A Zinc Phosphate with Multidirectional Intersecting Helical Channels

Abstract

Chiral inorganic materials with helical pores are particularly desirable because of their promising applications in enantioselective catalysis and separation. It is recognized that both zeolite beta [1, 2] and are heavily intergrown, with one of the polymorphs being chiral. However, an optically pure chiral zeolite material has been never found. [8] UCSB-7 frameworks contain cross-linked helical pores, [9] and metal borophosphates contain 6 1 or 6 5 helices.[10]Recently, we reported the layered zinc phosphite [(C 5 H 6 N 2 )Zn(HPO 3 )], which consists of left-handed and right-handed helical chains. The guest templating molecules are found to be important for the formation of the helical -Zn-O-P-chains.[11]Employing chiral metal complexs as templating agents has proven to be a possible approach to induce a chiral environment in the host framework.[12] Several metal phosphates templated by an optically pure or a racemic mixture of chiral metal complexes have been reported, including aluminophosphates, [12][13][14][15][16]

A new organic‐inorganic molybdenum arsenate complex based on [(CuO6)(As3O3)2Mo6O18]4‐ cluster as secondary building units

“…Polyoxometalates (POMs), an important class of inorganic compounds, have unusual structural chemistry [1], and properties that make them attractive for applications in catalysis, materials science, photochemical and electrochemical [2,3]. Heteropolymolybdates are an important part in this field [4].…”

Tris(ethylenediamine-κ2N,N′)cadmium hexafluoridogermanate

“…[Ir(en) 3 ] 3+ , etc (Stalder & Wilkinson, 1997;Wang et al, 2003;Yu et al, 2001). Each [Cd(en) 3 ] 2+ cation is linked to three neighboring [GeF 6 ] 2-anions through N1-H1D···F1 hydrogen bonds (Table 1), generating a hydrogen-bonded layer along…”

[Cu 2 (HBTC) 2 (H 2 O) 2 (μ 2 -H 2 O)] · 2H 2 O: a new arm-shaped two-dimensional copper coordination polymer having both rhombic cavities and helical-like channels

“…This function of asymmetrical ligand has been well proved in the synthesis of other unprecedented structures, such as chiral and high asymmetric molecules [5c,6d]. To the best of our knowledge, this kind of pseudo-helical-shaped channel is rather rare [11], and has never been reported in the system of polymers participated by multi-carboxylates.…”