title: New members in the Ni(n+1)(QO3)nX2 family: unusual 3D network based on Ni4ClO3 cubane-like clusters in Ni7(TeO3)6Cl2.
abstract: Three new members in the family of nickel(II) tellurium(IV)/selenium(IV) oxyhalides generally formulated as Ni(n+1)(QO3)nX2 (Q = Te, X = Cl, n = 6, 10; Q = Se, X = Br, n = 4) have been synthesized by solid-state reactions of NiX2, QO2, and NiO (or Ni2O3) at high temperature. The structure of Ni7(TeO3)6Cl2 features a novel 3D network based on Ni4ClO3 cubane-like clusters with Te atoms located at the cavities of the network. Ni4ClO3 clusters are interconnected into a hexagonal layer through additional O...O edges. The neighboring two layers are further interconnected, via sharing of common Ni(II) atoms, into a novel 3D network. The 3D open framework of Ni5(SeO3)4Br2 is built from 2D nickel(II) oxybromide layers bridged by Se and additional Ni atoms. The structure of Ni11(TeO3)10Cl2 features a condensed 3D network based on NiO5Cl, NiO6, and NiO5 polyhedra interconnected via corner and edge sharing, as well as O-Te-O bridges. The results of magnetic property measurements indicate that all three compounds display antiferromagnetic interactions between nickel(II) centers.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, and the Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
authors.forename: Hai-Long
authors.initials: HL
authors.lastname: Jiang
authors.forename: Jiang-Gao
authors.initials: JG
authors.lastname: Mao