Liangliang Huang

A porous chiral In-MOF with anionic-type diamond network: synthesis, structure and nitrogen gas adsorption

A novel porous chiral In-MOF InH(D-C10H14O4)2 (1) with a left-handed helical channel assembled from D-(+)-camphoric acid (D-H2Cam), has been prepared under solvothermal conditions. Single-crystal X-ray diffraction analysis reveals that compound 1 crystallizes in the tetragonal space group P43212 (no. 96) with parameters: a = 13.8954 A, b = 13.8954 A, c = 17.7870 A, V = 3434.4(7) A 3, Z = 4. The framework feature of compound 1 is characteristic of four-connected anionic-type diamond net with left-handed chiral channel. Moreover, compound 1 exhibits high surface area.

Synthesis, crystal structure and characterization of a new layered gallium phosphite Ga(HPO3)F3·(trans-C6N2H16) with left- and right-handed helical chains

A new 2D layered gallium phosphite Ga(HPO3)F3·(trans-C6N2H16) 1, possessing left- and right-handed helical chains, has been solvothermally synthesized in the presence of 1,2-diaminocyclohexane (DACH) as a structure-directing agent. The inorganic framework of compound 1 consists of [Ga2O4F6] dimers and HPO3 groups. The dimers are linked up via HPO3 groups to give rise to left- and right-handed helical chains along the b-axis, further these two types of helical chains are alternately connected, with [Ga2O4F6] dimer units functioning as hinges to form a novel 2D layered network in the bc-plane. Interestingly, although a mixture of cis and trans isomers of DACH are used in the synthesis, only the trans isomer is found to direct the formation of compound 1. Moreover, the chirality of the racemic trans isomers of DACH can be transferred into the inorganic framework by hydrogen-bond. The crystal data are as follow: Ga(HPO3)F3·(trans-C6N2H16); M = 322.91; Monoclinic; P21/c (14); a = 11.2635(5) A; b = 9.8212(5) A; c = 10.1458(3) A; β = 102.981(2)°; Z = 4.