{"id":"https://openalex.org/A5020884635","orcid":"https://orcid.org/0000-0003-3125-4313","observed_orcids":["https://orcid.org/0000-0003-3125-4313"],"display_name":"G\u00fcnter Helmchen","raw_author_names":["G. HELMCHEN","G. Helmchen","Gunter Helmchen","G\u00fcnter Helmchen","G\u00fcnter Helmchen*","Helmchen, G.","Helmchen, G\u00fcnter"],"full_name":"G\u00fcnter Helmchen*","works_count":332,"cited_by_count":15398,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":63,"i10_index":181},"ids":{"openalex":"https://openalex.org/A5020884635","orcid":"https://orcid.org/0000-0003-3125-4313","observed_orcids":["https://orcid.org/0000-0003-3125-4313"]},"affiliations":[{"institution":{"id":"https://openalex.org/I100066346","ror":"https://ror.org/04vnq7t77","display_name":"University of Stuttgart","country_code":"DE","type":"education","lineage":["https://openalex.org/I100066346"]},"years":[1981,1980,1979,1978,1977,1976,1974]},{"institution":{"id":"https://openalex.org/I114090438","ror":"https://ror.org/04cvxnb49","display_name":"Goethe University Frankfurt","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},"years":[1997,1994]},{"institution":{"id":"https://openalex.org/I129774422","ror":"https://ror.org/03prydq77","display_name":"University of Vienna","country_code":"AT","type":"education","lineage":["https://openalex.org/I129774422"]},"years":[1996]},{"institution":{"id":"https://openalex.org/I16835326","ror":"https://ror.org/02wn5qz54","display_name":"University of St Andrews","country_code":"GB","type":"education","lineage":["https://openalex.org/I16835326"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I181647926","ror":"https://ror.org/00n3w3b69","display_name":"University of Strathclyde","country_code":"GB","type":"education","lineage":["https://openalex.org/I181647926"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I1850255","ror":"https://ror.org/02s6k3f65","display_name":"University of Basel","country_code":"CH","type":"education","lineage":["https://openalex.org/I1850255"]},"years":[2000]},{"institution":{"id":"https://openalex.org/I204337017","ror":"https://ror.org/01aj84f44","display_name":"Aarhus University","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]},"years":[1998]},{"institution":{"id":"https://openalex.org/I223822909","ror":"https://ror.org/038t36y30","display_name":"Heidelberg University","country_code":"DE","type":"education","lineage":["https://openalex.org/I223822909"]},"years":[2025,2023,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003,2002,2001,2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1985]},{"institution":{"id":"https://openalex.org/I241749","ror":"https://ror.org/013meh722","display_name":"University of Cambridge","country_code":"GB","type":"education","lineage":["https://openalex.org/I241749"]},"years":[1992]},{"institution":{"id":"https://openalex.org/I25974101","ror":"https://ror.org/00fbnyb24","display_name":"University of W\u00fcrzburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I25974101"]},"years":[2006,1985,1984,1983,1982]},{"institution":{"id":"https://openalex.org/I35440088","ror":"https://ror.org/05a28rw58","display_name":"ETH Zurich","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},"years":[1973,1972]},{"institution":{"id":"https://openalex.org/I39555362","ror":"https://ror.org/01a77tt86","display_name":"University of Warwick","country_code":"GB","type":"education","lineage":["https://openalex.org/I39555362"]},"years":[1993]},{"institution":{"id":"https://openalex.org/I4210090782","ror":"https://ror.org/00a7vgh58","display_name":"Max-Planck-Institut f\u00fcr Kohlenforschung","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210090782"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I4210107087","ror":"https://ror.org/01q8f6705","display_name":"BASF (Germany)","country_code":"DE","type":"company","lineage":["https://openalex.org/I4210107087"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I4405255184","ror":"https://ror.org/02q73ep21","display_name":"Laboratory of Organic Chemistry","country_code":"CH","type":"facility","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088","https://openalex.org/I4405255184"]},"years":[1973,1972]},{"institution":{"id":"https://openalex.org/I904495901","ror":"https://ror.org/04tsk2644","display_name":"Ruhr University Bochum","country_code":"DE","type":"education","lineage":["https://openalex.org/I904495901"]},"years":[2001]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10013","display_name":"Asymmetric Synthesis and Catalysis","count":219,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11281","display_name":"Asymmetric Hydrogenation and Catalysis","count":82,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13859","display_name":"Organic Chemistry Synthesis Methods","count":58,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10464","display_name":"Crystal structures of chemical compounds","count":48,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10798","display_name":"Crystallography and molecular interactions","count":46,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11281","display_name":"Asymmetric Hydrogenation and Catalysis","value":0.0006403,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10013","display_name":"Asymmetric Synthesis and Catalysis","value":0.0006087,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13115","display_name":"Axial and Atropisomeric Chirality Synthesis","value":0.0005851,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12527","display_name":"Chemistry and Stereochemistry Studies","value":0.0002913,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11549","display_name":"Synthetic Organic Chemistry Methods","value":0.0002661,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9907723069190979},{"id":"161790260","wikidata":"https://www.wikidata.org/wiki/Q82264","display_name":"Catalysis","score":0.9294942021369934},{"id":"71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","score":0.6479244232177734},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.6020151972770691},{"id":"21951064","wikidata":"https://www.wikidata.org/wiki/Q899212","display_name":"Combinatorial chemistry","score":0.5989491939544678}],"counts_by_year":[{"year":1953,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1971,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1972,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1973,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1976,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1978,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":8,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":7,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":13,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":1990,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":7,"oa_works_count":1,"cited_by_count":0},{"year":1994,"works_count":12,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":14,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":14,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":10,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":12,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":20,"oa_works_count":8,"cited_by_count":0},{"year":2003,"works_count":12,"oa_works_count":5,"cited_by_count":0},{"year":2004,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":2005,"works_count":11,"oa_works_count":3,"cited_by_count":0},{"year":2006,"works_count":16,"oa_works_count":4,"cited_by_count":0},{"year":2007,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2008,"works_count":10,"oa_works_count":3,"cited_by_count":0},{"year":2009,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":2010,"works_count":11,"oa_works_count":4,"cited_by_count":0},{"year":2011,"works_count":14,"oa_works_count":7,"cited_by_count":0},{"year":2012,"works_count":4,"oa_works_count":0,"cited_by_count":656},{"year":2013,"works_count":7,"oa_works_count":5,"cited_by_count":534},{"year":2014,"works_count":6,"oa_works_count":1,"cited_by_count":634},{"year":2015,"works_count":2,"oa_works_count":0,"cited_by_count":432},{"year":2016,"works_count":10,"oa_works_count":9,"cited_by_count":465},{"year":2017,"works_count":1,"oa_works_count":0,"cited_by_count":483},{"year":2018,"works_count":1,"oa_works_count":0,"cited_by_count":493},{"year":2019,"works_count":1,"oa_works_count":0,"cited_by_count":484},{"year":2020,"works_count":2,"oa_works_count":1,"cited_by_count":431},{"year":2021,"works_count":1,"oa_works_count":1,"cited_by_count":457},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":419},{"year":2023,"works_count":2,"oa_works_count":2,"cited_by_count":381},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":357},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":298},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":206}],"display_name_alternatives":["G. HELMCHEN","G. Helmchen","Gunter Helmchen","G\u00fcnter Helmchen","G\u00fcnter Helmchen*","Helmchen, G.","Helmchen, G\u00fcnter"],"block_key":"g helmchen","works_api_url":"https://api.openalex.org/works?filter=author.id:A5020884635","updated_date":"2026-11-03T12:34:24","created_date":"2016-06-24T00:00:00"}