biostudies-literatureFournier BNCRR NIH HHSNIGMS NIH HHS250-60https://www.ebi.ac.uk/biostudies/studies/S-EPMC4770874biostudies-literatureUnknown72(Pt 2)Two methods for scaling of multicrystal data collected in time-resolved photocrystallography experiments are discussed. The WLS method is based on a weighted least-squares refinement of laser-ON/laser-OFF intensity ratios. The other, previously applied, is based on the average absolute system response to light exposure. A more advanced application of these methods for scaling within a data set, necessary because of frequent anisotropy of light absorption in crystalline samples, is proposed. The methods are applied to recently collected synchrotron data on the tetra-nuclear compound Ag2Cu2L4 with L = 2-diphenylphosphino-3-methylindole. A statistical analysis of the weighted least-squares refinement residual terms is performed to test the importance of the scaling procedure.Acta crystallographica. Section A, Foundations and advancesAnalysis of multicrystal pump-probe data sets. II. Scaling of ratio data sets.PMC4770874P41 RR007707RR007707R24 GM111072Sokolow JCoppens PFournier BfalseAnalysis of multicrystal pump-probe data sets. II. Scaling of ratio data sets.Two methods for scaling of multicrystal data collected in time-resolved photocrystallography experiments are discussed. The WLS method is based on a weighted least-squares refinement of laser-ON/laser-OFF intensity ratios. The other, previously applied, is based on the average absolute system response to light exposure. A more advanced application of these methods for scaling within a data set, necessary because of frequent anisotropy of light absorption in crystalline samples, is proposed. The methods are applied to recently collected synchrotron data on the tetra-nuclear compound Ag2Cu2L4 with L = 2-diphenylphosphino-3-methylindole. A statistical analysis of the weighted least-squares refinement residual terms is performed to test the importance of the scaling procedure.2016-01-01T00:00:00Z2016 Mar2025-04-25T19:03:22.078Z2019-03-27T02:10:08ZS-EPMC47708742691937710.1107/S205327331502405510.1107/s2053273315024055