NDLI: Crystal structure and magnetic properties of a new layered sodium nickel hydroxide phosphate , $Na_{2}Ni_{3}(OH)_{2}(PO_{4})

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Baidya, Santu Vasiliev, Alexander Kiriukhina, Galina Volkov, Anatoly Volkova, Olga Zvereva, Elena Dimitrova, Olga Yakubovich, Olga Saha-dasgupta, Tanusri Golovanov, Alexey
Description	Author Affiliation: Yakubovich O ( M.V. Lomonosov Moscow State University, Moscow 119991, Russia. vasil@mig.phys.msu.ru.)
Abstract	Mixed sodium nickel hydroxide phosphate , $Na_{2}Ni_{3}(OH)_{2}(PO_{4})_{2},$ has been synthesized hydrothermally from the system $NiCO_{3}–Na_{4}P_{2}O_{7}–NaCl–$ H $_{2}O$ . Its monoclinic crystal structure has been determined by single crystal X-ray diffraction : a = 14.259(5), b = 5.695(2), c = 4.933(1) Å, β = 104.28(3)°, space group C2/m, Z = 2, $ρ_{c}$ = 3.816 g $cm^{−3},$ R = 0.026. The underlying spin model has been characterized in terms of first-principles electronic structure calculations. The compound is formed by alternating layers of $[NiO_{6}]$ octahedra and $[NaO_{7}]$ polyhedra, combined in the [100] direction with tetrahedral $[PO_{4}]$ oxocomplexes and hydrogen bonds. The novel phase is treated as an isostructural variant of the two-dimensional potassium manganese hydroxide vanadate, $K_{2}Mn_{3}(OH)_{2}(VO_{4})_{2},$ which can be formally obtained by morphotropic substitutions of all positions in the cationic sublattice. The stripe arrangement of $Ni^{2+}$ ions (S = 1) within $[NiO_{4}(OH)_{2}]$ layers of $Na_{2}Ni_{3}(OH)_{2}(PO_{4})_{2}$ is unique in the sense that its magnetic topology places it in between widely discussed honeycomb and kagomé lattices. The $Na_{2}Ni_{3}(OH)_{2}(PO_{4})_{2}$ is a low-dimensional magnet, which reaches the short-range correlation regime at $T_{max}$ = 38.4 K and orders antiferromagnetically at $T_{N}$ = 33.4 K.
ISSN	14779226
Issue Number	41
Journal	Dalton Trans.
Volume Number	42
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2013-10-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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