The Trivalent Manganese Hydrogenophosphate LiMn(H 2 P 2 O 7 ) 2 : A Chain‐Like Structure | Zendy

Baies Radu | Zendy; Pralong Valérie | Zendy; Caignaert Vincent | Zendy; Raveau Bernard | Zendy

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The Trivalent Manganese Hydrogenophosphate LiMn(H 2 P 2 O 7 ) 2 : A Chain‐Like Structure

Author(s) -

Baies Radu,

Pralong Valérie,

Caignaert Vincent,

Raveau Bernard

Publication year - 2012

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.201200101

Subject(s) - manganese , crystallography , octahedron , electron paramagnetic resonance , ionic conductivity , ionic bonding , chemistry , paramagnetism , ab initio , materials science , ion , inorganic chemistry , crystal structure , nuclear magnetic resonance , condensed matter physics , physics , electrolyte , organic chemistry , electrode

A new Mn 3+ hydrogenophosphate LiMn(H 2 P 2 O 7 ) 2 was synthesized, using a soft chemistry method. The ab initio structure resolution of this phase shows that it consists of infinite chains [MnH 4 P 4 O 14 ] ∞ , built up of corner‐sharing MnO 6 octahedra and P 2 O 5 (OH) 2 diphosphate groups. The cohesion between the chains is ensured by Li + cations and hydrogen bonds. This compound is paramagnetic and Mn 3+ is in high spin (H.S.) configuration. The impedance plots show that this hydrogenophosphate is a modest ionic conductor with activation energy of 0.8 eV and a conductivity reaching 10 –6 S · cm –1 at 320 °C.

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