Structure cristalline des hydroxytellurites de nickel et de cobalt

Synthetic Pathways for New Tubular Transition Metal Hydroxo- and Fluoro-Selenites: Crystal Structures ofM12(X)2(SeO3)8(OH)6(M=Co2+,Ni2+;X= OH−)

“…Indeed, the first compounds in the dumortierite family were synthesized from transition metal and to the addition of the oxoanionic ligand. This precursor could be thought of as a polymer formed from the predomtellurium oxides under hydrothermal conditions (T ϭ 380ЊC, P ϭ 900 bar) (23). In these reactions, the mechanism inant species in the solution (…”

Polar space group and complex magnetism in Ni11□(HPO3)8(OH)6: towards a new multiferroic material?

“…clearly smaller than what is expected for the iron phosphite, 745.36Å 3 [6]). In addition to the XRD pattern characteristic of Ni 11 The structure of Ni 11 (HPO 3 ) 8 (OH) 6 consists in a complex three-dimensional framework [3][4][5]. It is built from highly distorted NiO 6 octahedra which share a face to form The low-magnification SEM images (Figures 2a and b) show that the morphology is characterized by the formation of spherical urchin-like superstructures, with a diameter of a few tens micrometers.…”

“…In this large playground, crystalline micro-porous phosphites of transition metals corresponding to the M 11 □(HPO 3 ) 8 (OH) 6 formula (with M = Zn, Co, Ni) are of particular interest. The synthesis of such phosphites was first reported by Marcos et al for M = Zn, Co and Ni [3,4], who solved the structure and described it as isotype with A 3 Te 2 O 6 (OH) 2 [5] . This discovery paved the way for new materials based on other transition metals (M= Fe or Mn [6]) but also on the control of micro/nano structures [7][8][9].…”

Structure of tribarium dichlorohexaoxoditellurate(IV), Ba3Te2O6Cl2

“…In comparing the structure of Ba3Te206C12 with those of NiaTeEO6(OH) 2 and CoaTeEO6(OH)2 (Perez, Lasserre, Moret & Maurin, 1976) a remarkable fact is noticed. In these hydroxytellurites the exact position of the OH O atom 0(5) is uncertain.…”