l-Cysteinium semioxalate: a new monoclinic polymorph or a hydrate?

Minkov, V.S.; Boldyreva, E.V.

doi:10.1107/S0108270111009760

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 2
Hydrogen bonding (dashed lines) between semioxalate anions and L-cysteinium cations in (I)

. [Symmetry codes: (i) x − $[{1\over 2}]$ , y − $[{1\over 2}]$ , z − 1; (ii) −x + $[{1\over 2}]$ , y + $[{1\over 2}]$ , −z + 1; (iii) x − $[{1\over 2}]$ , y + $[{1\over 2}]$ , z − 1; (iv) x, y − 1, z; (v) x − $[{1\over 2}]$ , y − $[{3\over 2}]$ , z − 1; (vi) −x + $[{1\over 2}]$ , y − $[{1\over 2}]$ , −z + 1; (vii) −x + $[{1\over 2}]$ , y − $[{3\over 2}]$ , −z + 1.]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 67| Part 4| March 2011| Pages o139-o142

doi:10.1107/S0108270111009760

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