Pseudo-centrosymmetric space-group

Of particular relevance to the measurability of crystal-field effects is a recent study that analyzed the experimental BCP properties of 9-ethynyl-9-fluorenol (crystallizes in the centrosymmetric space group C2/c with two molecules in the asymmetric unit) in relation to the extent to which constraints (local pseudo-symmetry and chemical similarity) were imposed on the pseudoatom model... 

The series CeTSn together with CeRhSb and the related pseudo-ternary compounds crystallize in a rather complex orthorhombic structure with the non-centrosymmetric space group Pn2ia (Higashi et al. 1993). This structure, which is shown in fig. 106 (left), is closely related to the e-TiNiSi structure. It forms puckered hexagonal Ni—Sn-Ni rings... 

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