Crystal structure of Na4(As2O5)(H2O)0.5 and a survey of the pyroarsenite anion, (As2O5)4−

Wolflehner, T.; Weil, M.

doi:10.1107/S2056989026002859

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 2
Coordination environments for the four Na⁺ positions. Displacement ellipsoids are as in Fig. 1

. [Symmetry codes: (i) x, −y + 1, z − $[{1\over 2}]$ ; (ii) −x, y + 1, −z + $[{1\over 2}]$ ; (iii) x, −y, z − $[{1\over 2}]$ ; (iv) −x + $[{1\over 2}]$ , −y + $[{1\over 2}]$ , −z + 1; (v) −x + $[{1\over 2}]$ , −y − $[{1\over 2}]$ , −z + 1; (vi) −x + $[{1\over 2}]$ , y + $[{1\over 2}]$ , −z + $[{1\over 2}]$ ; (vii) −x + $[{1\over 2}]$ , y − $[{1\over 2}]$ , −z + $[{1\over 2}]$ ; (viii) x + $[{1\over 2}]$ , y − $[{1\over 2}]$ , z.]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 82| Part 4| April 2026| Pages 379-383

https://doi.org/10.1107/S2056989026002859

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