Iron–sulfur clusters have no right angles Nigel W. Moriarty and Paul D. Adams, Acta Cryst. (2019). D75, 16–20 http://journals.iucr.org/d/issues/2019/01/00/rr5165/index.html This agrees well with what we see in structures of respiratory complex II! But when I downloaded geostd.tar from https://sourceforge.net/projects/geostd/ and look in SF4.cif, I see: SF4 SF4 'Iron/sulfur cluster' Ion/Group/Compound 8 8 . 2009-09-01 2009-09-01 ~~~~ loop_ _chem_comp_angle.comp_id _chem_comp_angle.atom_id_1 _chem_comp_angle.atom_id_2 _chem_comp_angle.atom_id_3 _chem_comp_angle.value_angle _chem_comp_angle.value_angle_esd SF4 FE3 S2 FE1 90.000 3.000 SF4 FE4 S2 FE1 90.000 3.000 SF4 FE2 S3 FE1 90.000 3.000 SF4 FE4 S3 FE1 90.000 3.000 SF4 FE2 S4 FE1 90.000 3.000 ~~~~ SF4 S3 FE2 S1 90.000 3.000 SF4 S4 FE2 S1 90.000 3.000 SF4 S2 FE3 S1 90.000 3.000 SF4 S4 FE3 S1 90.000 3.000 SF4 S2 FE4 S1 90.000 3.000 SF4 S3 FE4 S1 90.000 3.000 SF4 S3 FE1 S2 90.000 3.000 Did I get an outdated version?