TY - JOUR
T1 - Twinning in 5-fluorosalicylic acid
T2 - description of a new polymorph
AU - Lutz, Martin
AU - Vliem, Jara F.
AU - Rodenburg, Hendrik P.
PY - 2018/1
Y1 - 2018/1
N2 - The crystal structure of 5-fluorosalicylic acid is known from the literature [Choudhury & Guru Row (2004). Acta Cryst. E60, o1595-o1597] as crystallizing in the monoclinic crystal system with space-group setting P2(1)/n and with one molecule in the asymmetric unit (polymorph I). We describe here a new polymorph which is again monoclinic but with different unit-cell parameters (polymorph II). Polymorph II has two molecules in the asymmetric unit. Its structure was modelled as a twin, with a pseudo-orthorhombic C-centred twin cell.
AB - The crystal structure of 5-fluorosalicylic acid is known from the literature [Choudhury & Guru Row (2004). Acta Cryst. E60, o1595-o1597] as crystallizing in the monoclinic crystal system with space-group setting P2(1)/n and with one molecule in the asymmetric unit (polymorph I). We describe here a new polymorph which is again monoclinic but with different unit-cell parameters (polymorph II). Polymorph II has two molecules in the asymmetric unit. Its structure was modelled as a twin, with a pseudo-orthorhombic C-centred twin cell.
KW - fluorosalicylic acid
KW - crystal structure
KW - polymorphism
KW - twinning
KW - thermal expansion
KW - O—H...F hydrogen bonds
KW - fluorine interactions
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=d7dz6a2i7wiom976oc9ff2iqvdhv8k5x&SrcAuth=WosAPI&KeyUT=WOS:000419342700001&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1107/S2053229617017077
DO - 10.1107/S2053229617017077
M3 - Article
C2 - 29303490
SN - 2053-2296
VL - 74
SP - 1
EP - 6
JO - Acta crystallographica. Section C, Structural chemistry
JF - Acta crystallographica. Section C, Structural chemistry
IS - 1
ER -