Ni2Sr(PO4)2·2H2O

Assani, Abderrazzak; Saadi, Mohamed; Zriouil, Mohammed; Ammari, Lahcen El

doi:10.1107/s1600536810045113

Cited by 6 publications

(7 citation statements)

References 14 publications

(13 reference statements)

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“…Unlike I and its phosphate analogue SrNi 2 (PO 4 ) 2 ⋅2H 2 O (Assani et al , 2010), in the majority of tsumcorite-group members intralayer hydrogen bonds are usually much shorter and stronger than the interlayer hydrogen bonds. According to Effenberger et al (2000) an increase in the O1–O1 distance indicates the absence of strong symmetry restricted hydrogen bonds between two symmetry equivalent O1 atoms.…”

Section: Resultsmentioning

confidence: 99%

An update on the mineral-like Sr-containing transition metal arsenates

Đorđević

Karanović

2021

MinMag

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We report on the crystal structures of three novel synthetic SrM-arsenates (M = Ni and Fe3+), isostructural or structurally related to the minerals from tsumcorite, carminite and brackebuschite groups. They were synthesised under mild hydrothermal conditions and further characterised using single-crystal X-ray diffraction (SXRD), scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) and Raman spectroscopy. SXRD and SEM-EDS yielded formulae: (I) SrNi2(AsO4)2⋅2H2O, (II) Sr1.4Fe3+1.6(AsO4)2(OH)1.6 and (III) SrFe3+(AsO4)(AsO3OH). All three structures are built up of slightly distorted MO6 octahedra and AsO4 tetrahedra that are linked by Sr2+ with different coordination geometries and hydrogen bonds. I represent a basic structure type typical for tsumcorite-group minerals (space group C2/m) while II has a new intermediate structure between carminite, PbFe3+2(AsO4)2(OH)2 and arsenbrackebuschite, Pb2Fe3+(AsO4)2(OH) (s.g. Pm). III is triclinic and adopts a new structure-type (s.g. P $\bar{1}$ ). The structure of I is built up of infinite linear edge-sharing NiO4(OH2)2 octahedral chains, extending along [010] and linked by AsO4 tetrahedra, SrO8 polyhedra and hydrogen bonds. The structure of II is characterised by the carminite-like FeO4(OH)2 octahedral chains and Edshammar-polyhedral chains, which involves SrO11 coordination polyhedra similar to that of PbO11 in arsenbrackebuschite. Both chains in II are aligned parallel to the b axis of the monoclinic unit cell and connected together by the arsenate AsO4 tetrahedra, SrO8 polyhedra and the hydrogen-bonding network. The compound III has a new type of crystal structure based on the unusual corrugated octahedral–tetrahedral-quadruple chains. These are made up of a central double-sided chain linked to two single-sided chains into a quadruple chain extended along the a axis. The chains in III are built up of FeO6 octahedra and AsO4 tetrahedra further linked to each other by shared vertices. The quadruple chains are interconnected by additional AsO4 tetrahedra forming a heteropolyhedral 3D open framework. Strontium atoms are situated in the two channels. The structural connections to related minerals and inorganic compounds are discussed.

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Section: Resultsmentioning

confidence: 99%

An update on the mineral-like Sr-containing transition metal arsenates

Đorđević

Karanović

2021

MinMag

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“…This structural diversity is mainly associated with the ability of TM cations to adopt different oxidation states in various coordination polyhedra. Based on previous hydrothermal investigations aimed at orthophosphates of general formula (M,M 00 ) 3 (PO 4 ) 2 ÁnH 2 O (M and M 00 = bivalent cations), we have reported on synthesis and characterization of the phosphates Ni 2 Sr(PO 4 ) 2 Á2H 2 O (Assani et al, 2010), Mg 1.65 Cu 1.35 (PO 4 ) 2 ÁH 2 O (Khmiyas et al, 2015) and Mn 2 Zn(PO 4 ) 2 ÁH 2 O (Alhakmi et al, 2015). In this context, the aim of the present study was to develop new phases belonging to the series AM 00 M 000 (PO 4 ) 2 where A, M 00 and M 000 are mono-, bi-and trivalent cations, respectively.…”

Section: Chemical Contextmentioning

confidence: 99%

Synthesis and crystal structure of NaCuIn(PO₄)₂

et al. 2020

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Single crystals of sodium copper(II) indium bis[phosphate(V)], NaCuIn(PO4)2, were grown from the melt under atmospheric conditions. The title phosphate crystallizes in the space group P21/n and is isotypic with KCuFe(PO4)2. In the crystal, two [CuO5] trigonal bipyramids share an edge to form a dimer [Cu2O8] that is connected to two PO4 tetrahedra. The obtained [Cu2P2O12] units are interconnected through vertices to form sheets that are sandwiched between undulating layers resulting from the junction of PO4 tetrahedra and [InO6] octahedra. The two types of layers are alternately stacked along [101] and are joined into a three-dimensional framework through vertex- and edge-sharing, leaving channels parallel to the stacking direction. The channels host the sodium cations that are surrounded by four oxygen atoms in form of a distorted disphenoid.

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“…For properties of phosphates and their potential applications, see: Gao & Gao (2005); Viter & Nagornyi (2009); Clearfield (1988); Trad et al (2010). For compounds with related structures, see: Assani et al (2010Assani et al ( , 2011aAssani et al ( ,b,c, 2012; Effenberger (1999). For bond-valence analysis, see: Brown & Altermatt (1985).…”

Section: Related Literaturementioning

confidence: 99%

“…Furthermore, a special attention have been paid to the ternary system MO-M′O-P 2 O 5 with M=Ba, Ca, Cd, Pb and Sr and M′= transition metals, Mg and Zn. Our recent investigation has allowed to the isolate the compounds Ni 2 Sr(PO 4 ) 2 .2H 2 O (Assani et al 2010) and Co 2 Pb(HPO 4 )(PO 4 )OH H 2 O (Assani et al 2012).…”

Section: S1 Commentmentioning

confidence: 99%

Dilead(II) trimanganese(II) bis(hydrogenphosphate) bis(phosphate)

Assani¹,

Saadi²,

Zriouil³

et al. 2012

Acta Cryst E

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The title compound, Pb2Mn3(HPO4)2(PO4)2, was synthesized by a hydrothermal method. All atoms are in general positions except for one Mn atom which is located on an inversion center. The framework of the structure is built up from PO4 tetrahedra and two types of MnO6 octahedra, one almost ideal and the other very distorted with one very long Mn—O bond [2.610 (4) Å compared an average of 2.161 Å for the other bonds]. The centrosymetric octahedron is linked to two distorted MnO6 octahedra by an edge common, forming infinite zigzag Mn3O14 chains running along the b axis. Adjacent chains are linked by PO4 and PO3(OH) tetrahedra through vertices or by edge sharing, forming sheets perpendicular to [100]. The Pb2+ cations are sandwiched between the layers and ensure the cohesion of the crystal structure. O—H⋯O hydrogen bonding between the layers is also observed.

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Ni₂Sr(PO₄)₂·2H₂O

Cited by 6 publications

References 14 publications

An update on the mineral-like Sr-containing transition metal arsenates

An update on the mineral-like Sr-containing transition metal arsenates

Synthesis and crystal structure of NaCuIn(PO₄)₂

Dilead(II) trimanganese(II) bis(hydrogenphosphate) bis(phosphate)

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Ni2Sr(PO4)2·2H2O

Cited by 6 publications

References 14 publications

An update on the mineral-like Sr-containing transition metal arsenates

An update on the mineral-like Sr-containing transition metal arsenates

Synthesis and crystal structure of NaCuIn(PO4)2

Dilead(II) trimanganese(II) bis(hydrogenphosphate) bis(phosphate)

Contact Info

Product

Resources

About

Ni₂Sr(PO₄)₂·2H₂O

Synthesis and crystal structure of NaCuIn(PO₄)₂