Yi-Ming Xie

New optical supramolecular compound constructed from a polyoxometalate cluster and an organic substrate

A new optical supramolecular compound constructed from a polyoxometalate cluster and an organic substrate [(H3O)(C12H10N3)2(PW12O40)] (1) has been synthesized via a hydrothermal reaction and has been structurally characterized by X-ray diffraction. The solid-state diffuse reflectance, IR, and photoluminescence spectra of the title compound indicate that there is an interaction between the alpha-PW12O40 and the organic substrate. The light-yellow title compound shows a certain second-order nonlinear optical response of I(2omega) = 2I(KDP)(2omega).

Spontaneous asymmetrical crystallization of a three-dimensional diamondoid framework material from achiral precursors

Presented here is a homochiral three-dimensional diamondoid framework material, [Zn(AMTD)(2)](n) generated through an unusual spontaneous asymmetrical crystallization from achiral precursors without any enantiopure additives, which first demonstrates that symmetry breaking could be driven by the cooperation of twisted framework topology and an asymmetrical ligand.

(3,4)-Connected jph-type porous framework with Cu4I4clusters as jointing points of helices

A (3,4)-connected jph-type porous framework with Cu4I4clusters as jointing points of helices has been solvothermally synthesized and characterized; it shows alternating left- and right-handed helices structure, featuring an unprecedented non-interpenetrated jph network with high degree of porosity and large open channels.

New (3,4)-connected intrinsically chiral topology observed in a homochiral coordination polymer from achiral precursors

An unpredicted (3,4)-connected topology with intrinsic chirality presented in a homochiral coordination polymer [Cu2(L)CN]n (1; L = 5-(4-pyridyl)tetrazole) was first shown here, which reveals a new possibility for the construction of lowly-connected chiral framework materials with potential applications.

Topological derivation from centrosymmetry to noncentrosymmetry in a three-dimensional polar framework material

Strong second harmonic generation (SHG) response was presented by a three-dimensional polar framework material [Cu2(L)Br]n (1; L = 5-(4-pyridyl)tetrazole), which was obtained by reacting CuBr with HL under solvothermal conditions and displayed an noncentrosymmetric (3,4)-connected topology derived from the centrosymmetric CdSO4 net.

A new IR non-linear optical material with 2D 3-fold interpenetrated topology†

A new IR non-linear optical compound [(Ag4L4)(SiW12O40)] has been hydrothermally synthesized from the self-assembly of silicotungstic acid, 4,4′-H2bpz (L = 4,4′-H2bpz = 3,3′,5,5′-tetramethyl-substituted 4,4′-bipyrazole) and AgF. Its structure is composed of rare (AgL)∞ castellated chains that are linked by polyoxometalate clusters to form an interesting two dimensional 3-fold interpenetrated structure. The title compound is the first example of a polyoxometalate-containing metal–organic hybrid compound that has been shown to have strong SHG effect in IR region and is thermally stable up to ca. 400 °C.

One-pot synthesis of two new copper(I) coordination polymers: in situ formation of different ligands from 4-aminotriazole

Two Cu4I4 coordination polymers, [Cu2I2(aadtz)]n (1) and [Cu2I(dtz)]n (2) [aadtz = 4-[(1-aminoethylidene)-amino]-3,5-diethyl-1,2,4-triazole, dtz = 3,5-diethyl-1,2,4-triazole], were synthesized in a one-pot reaction of CuI and 4-amino-3,5-diethyl-1,2,4-triazole under solvothermal conditions. The organic components were generated in situ from a common triazolate source. The structures of the Cu4I4 units in the polymers are different. The Cu4I4cluster in complex 1 is an inorganic 8-membered ring with a chair–chair conformation, while the one in complex 2 is a distorted cubane. The topologies of the complexes were assigned as a two-dimensional 4-connected grid for 1 and a three-dimensional (3,4)-connected jph-type framework for 2. In addition, the luminescent properties of the complexes in the solid state were also investigated.