Download citation
Download citation
link to html
The X-ray single-crystal diffraction intensities of the intermetallic compound TiGePt were analysed. These showed beyond doubt that the crystal structure is non-centrosymmetric. The analysis revolves around the resonant-scattering contribution to differences in intensity between Friedel opposites hkl and \bar h\bar k\bar l. The following techniques were used: Rmerge factors on the average (A) and difference (D) of Friedel opposites; statistical estimates of the resonant-scattering contribution to Friedel opposites; plots of 2Aobs against 2Amodel and of Dobs against Dmodel; the antisymmetric D-Patterson function. Moreover it was possible to show that a non-standard atomic model was unnecessary to describe TiGePt. Two data sets are compared. That measured with Ag Kα radiation at 295 K to a resolution of 1.25 Å−1 is less conclusive than the one measured with Mo Kα radiation at 100 K to the lower resolution of 0.93 Å−1. This result is probably due to the fact that the resonant scattering of Pt is larger for Mo Kα than for AgKα radiation.

Supporting information

txt

Text file https://doi.org/10.1107/S2052519213021635/gp5067sup1.txt
TiGePt: h,k,l,|Fobs|**2,u merged in 23 for MoKa at 100 K

txt

Text file https://doi.org/10.1107/S2052519213021635/gp5067sup2.txt
TiGePt: h,k,l,|Fobs|**2,u merged in 23 for AgKa at 295K

txt

Text file https://doi.org/10.1107/S2052519213021635/gp5067sup3.txt
TiGePt: h,k,l,|Fobs|**2,|Fcalc|**2,u merged in -43m for MoKa at 100 K

txt

Text file https://doi.org/10.1107/S2052519213021635/gp5067sup4.txt
TiGePt: h,k,l,|Fobs|**2,|Fcalc|**2,u merged in -43m for AgKa at 295 K


Follow Acta Cryst. B
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds