Syntheses and structures of the open­framework phases (CH3NH3)3·Zn4O(AsO4)3 and (CH3NH3)3·Zn4O(PO4)3 related to the M3Zn4O(XO4)3·nH2O family

Zn2(bipy)2V4TeO14: A new type of layered vanadium(V) tellurite with organically covalently bonded zinc(II) complex

“…3). The distance from the ring centre of N(1), C(1), C(2), C(3), C(4) and C (5) atoms to that of N(2), C(6), C (7), C(8), C(9) and C(10) from neighboring layer is 3.771 Å . These two rings are almost parallel with a dihedral angle of 2.7°.…”

“…The search for novel materials with open framework structure is very active due to the wideness of their potential applications in catalysis, shape-selective absorption, nonlinear optical (NLO) devices or molecular-based magnetism and more recently in hydrogen storage [1]. The majority of such work has been dominated by the [PO 4 ] 3À anion [2], but open frameworks of metal arsenates, germanates and carbonates have also been reported in the literature [3][4][5][6][7][8]. Recently, a lot of research efforts have been devoted to the preparations of open-framework structures involving the lone pair electron containing oxy-anions of group 16 elements [9][10][11][12][13][14].…”

Vanadyl arsenates as catalysts for selective oxidation of organic sulfides and alkenes

“…Among these, the arsenates are interesting because, although arsenic belongs to the same group as phosphorous, the larger size of the AsO 4 3-anion can give rise to different structures and/or physical properties. Consequently, many arsenate containing frameworks with different structure and composition, have been prepared and characterized [12,[15][16][17][18][19][20].…”

Mild hydrothermal synthesis, crystal structure, thermal behavior, spectroscopic and magnetic properties of the (NH4)[Fe(AsO4)1−x(PO4)xF] (x=0.3, 0.6, 0.8) series. Thermal transformation of (NH4)[Fe(AsO4)0.7(PO4)0.3F] into the textural porous orthorhombic Fe(AsO4)0.7(PO4)0.3

“…Of these, the arsenates are interesting because, although arsenic belongs to the same group of the periodic table as phosphorous, the larger size of the (AsO 4 ) 3À anion can give rise to different structures and/or physical properties. Thus, many arsenate frameworks of different structure and composition have been prepared and characterized [6,[9][10][11][12][13][14][15]. Furthermore, addition of fluoride anions into the reaction mixture, developed by Guth, Kessler and Ferey [16], has led to the discovery of new microporous structural types, some of them exhibiting very large channels such as in cloverite [17], ULM-5 [18], MIL-31 [19], MIL-46 [20] and VSB-5 [21].…”