{"doi":"10.1107/s0108767383001762","title":"On enantiomorph-polarity estimation","abstract":"The behaviour of Rogers's η parameter for enantiomorph-polarity estimation is examined theoretically and experimentally on simulated intensity data for seven well-assorted compounds. An alternative parameter x, based on incoherent scattering from twin components related by a centre of symmetry, is also considered. It is found that both parameters are very well adapted to implementation in a least-squares program and converge well. The η parameter can give false and over-precise indications of chirality-polarity for structures which are nearly centrosymmetric, whereas the x parameter does not have this fault and converges more rapidly than η.","journal":"Acta Crystallographica Section A Foundations of Crystallography","year":1983,"id":8396,"datarank":26.247437866419364,"base_score":9.247057954911346,"endowment":9.247057954911346,"self_citation_contribution":1.3870586932367022,"citation_network_contribution":24.86037917318266,"self_endowment_contribution":1.3870586932367022,"citer_contribution":24.86037917318266,"corpus_percentile":97.4,"corpus_rank":1394,"citation_count":10373,"citer_count":193,"citers_with_citation_signal":193,"citers_with_endowment":193,"datacite_reuse_total":0,"is_dataset":false,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"1983-11-01","authors":[{"id":73425,"name":"H. D. Flack","orcid":null,"position":0,"is_corresponding":true}],"reference_count":0,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-03-01T18:20:47.508186Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}