Six novel transition-metal phosphite compounds, with structure related to yavapaiite: Crystal structures and magnetic and thermal properties of AI[MIII(HPO3)2] (A=K, NH4, Rb and M=V, Fe)

The first lead cobalt phosphite, PbCo2(HPO3)3

“…The observed values are similar to those found in other related compounds containing the phosphite ion. 6,28 2.5 UV/vis spectroscopy The UV/vis absorbance spectrum was collected at room temperature with a PerkinElmer Lambda 650 spectrophotometer in the 250-800 nm range using an integration sphere designed for the characterization of solids. The spectrum is given in Fig.…”

“…14 In Fe 2 (HPO 3 ) 3 with face-sharing Fe dimers similar to those in the title compound, i.e., three μ 2 -η 1 bridging modes (which mean three M-O-M paths with one single oxygen bridging two metal atoms in each) that the intra-dimer exchanges are ten times weaker than the inter-dimer exchanges. 6 It mostly leads to extended Curie-Weiss (CW) thermal regimes down to low temperature in the absence of long-range magnetic ordering above 10 K. For instance, the behaviors reported for A I [M III (HPO 3 ) 2 ] (A = K, NH 4 , Rb; M = V, Fe) 28 show smooth deviation from the CW law, and Néel temperatures occur only for Fe 3+ (S = 5/2) phases below T N = 9 K at maximum.…”

Triorganotin Phosphonates Polymeric Chains - Synthesis, Infrared, Mossbauer and Single Crystal Characterization:the First Organotin(iv) Ph2- Bridged.

“…Few organic salt structures involving methylphosphonate anion were reported in the past three decades (Mahmoudkhani and Langer, 2002;Fleck et al, 2000;Paixao et al, 2000;Honle et al, 1990). To date, several hydrogenphosphonate compounds with different metals such as Mn, Co, Ga, Cr, V, Fe, Cd, In and U have earlier been reported in the literature (Ouarsal et al, 2016;Larrea et al 2016;Berrocal et al, 2014;Oh and Burns, 2014;Hamchaoui et al, 2013aHamchaoui et al, , 2013bLi et al, 2009;Fernandez-Armas et al, 2004a, 2004b. In some of these structures, the hydrogenphosphonate anion behaves as multidirectional synthons.…”

“…To the best of our knowledge (CSD version 5.40), very few, only three tin(IV) methylphosphonate and five tin(IV) hydrogenphosphonate containing crystalline compoundsare known (Diop et al, 2012a;Ribot et al, 2001;Adair et al, 1998;Chandrasekharet al, 2003Chandrasekharet al, , 2005Mairychova et al, 2014 (Mairychova et al, 2014) or an hexameric cage structure in a double O-capped cluster with tri-O-coordinating ligands (Chandrasekharet al, 2003(Chandrasekharet al, , 2005. Thus,continuing to focus in phosphonato organotin(IV) family compounds, we investigated in this work, in organic solvents,the interactions between a salt of methylphosphonic acid, CH 3 PO(OH) 2 andhexamethylene tetraamine (L) and, trimethyltin(IV) chloride in one hand and, phosphorous acid, HPO(OH) 2…”

K6[Fe8.27(HPO3)12]: a new mixed-valence iron phosphite

“…A careful study of the literature clearly shows that since the first organically templated vanadium phosphite with an open framework was isolated (Bonavia et al, 1995), the family of transition metal phosphites has grown rapidly and numerous compounds with interesting diversity have been reported Rojo et al, 2009). However, compared with the related phosphates, iron phosphites have not been studied widely and only a few iron phosphites with two- (Chung et al, 2004;Hamchaoui, Alonzo et al, 2013) and three-dimensional (Sghyar et al, 1991;Poojary et al, 1994;Attfield et al, 1994;Fan et al, 2005;Liu et al, 2005;Chung et al, 2006;Mandal et al, 2008;Chung et al, 2011;Fernandez et al, 2002) structures have been synthesized and characterized, and among these only a few contain iron in both valence states. In order to enlarge the phosphite materials family incorporating metallic magnetic cations belonging to the first series of transition elements, particularly in the presence of a second metal atom, our work has focused on the alkali metaliron-phosphite acid system.…”