{"id":"https://openalex.org/W1982976316","doi":"https://doi.org/10.1098/rspa.1961.0120","title":"The Bakerian Lecture, The spectra and structures of free methyl and free methylene","display_name":"The Bakerian Lecture, The spectra and structures of free methyl and free methylene","publication_year":1961,"publication_date":"1961-07-18","ids":{"openalex":"https://openalex.org/W1982976316","doi":"https://doi.org/10.1098/rspa.1961.0120","mag":"1982976316"},"language":"en","primary_location":{"id":"doi:10.1098/rspa.1961.0120","doi":"https://doi.org/10.1098/rspa.1961.0120","is_oa":false,"landing_page_url":"https://doi.org/10.1098/rspa.1961.0120","pdf_url":null,"source":{"id":"https://openalex.org/S4210212881","display_name":"Proceedings of the Royal Society of London A Mathematical and Physical Sciences","issn_l":"0080-4630","issn":["0080-4630","2053-9169"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319787","host_organization_name":"Royal Society","host_organization_lineage":["https://openalex.org/P4310319787"],"host_organization_lineage_names":["Royal Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":10.4667,"has_fulltext":false,"cited_by_count":496,"citation_normalized_percentile":{"value":0.99129624,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"262","issue":"1310","first_page":"291","last_page":"317"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12967","display_name":"Molecular Spectroscopy and Structure","score":0.9434000253677368,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12967","display_name":"Molecular Spectroscopy and Structure","score":0.9434000253677368,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"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/T10523","display_name":"Atomic and Molecular Physics","score":0.019700000062584877,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10002","display_name":"Advanced Chemical Physics Studies","score":0.015699999406933784,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/electronic-spectra","display_name":"electronic spectra","score":0.8970000147819519},{"id":"https://openalex.org/keywords/molecular-structure","display_name":"molecular structure","score":0.8610000014305115},{"id":"https://openalex.org/keywords/spin-spin-coupling","display_name":"spin-spin coupling","score":0.46799999475479126},{"id":"https://openalex.org/keywords/resonant-transitions","display_name":"resonance transitions","score":0.5379999876022339},{"id":"https://openalex.org/keywords/astronomical-spectra","display_name":"astronomical spectra","score":0.5640000104904175},{"id":"https://openalex.org/keywords/comets","display_name":"comets","score":0.5640000104904175},{"id":"https://openalex.org/keywords/interstellar-medium","display_name":"interstellar medium","score":0.9470000267028809}],"concepts":[{"id":"https://openalex.org/C66594872","wikidata":"https://www.wikidata.org/wiki/Q1064242","display_name":"Polyatomic ion","level":3,"score":0.912803590297699},{"id":"https://openalex.org/C111806078","wikidata":"https://www.wikidata.org/wiki/Q1751859","display_name":"Diatomic molecule","level":3,"score":0.8236986398696899},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.628720223903656},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.6096893548965454},{"id":"https://openalex.org/C40003534","wikidata":"https://www.wikidata.org/wiki/Q862228","display_name":"Raman spectroscopy","level":2,"score":0.5854363441467285},{"id":"https://openalex.org/C32909587","wikidata":"https://www.wikidata.org/wiki/Q11369","display_name":"Molecule","level":2,"score":0.5302994251251221},{"id":"https://openalex.org/C119824511","wikidata":"https://www.wikidata.org/wiki/Q13553575","display_name":"Absorption spectroscopy","level":2,"score":0.48380035161972046},{"id":"https://openalex.org/C139210041","wikidata":"https://www.wikidata.org/wiki/Q2145840","display_name":"Resonance (particle physics)","level":2,"score":0.4598449468612671},{"id":"https://openalex.org/C139066938","wikidata":"https://www.wikidata.org/wiki/Q185056","display_name":"Radical","level":2,"score":0.42916208505630493},{"id":"https://openalex.org/C75473681","wikidata":"https://www.wikidata.org/wiki/Q188651","display_name":"Photochemistry","level":1,"score":0.3249858021736145},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.30658724904060364},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1755829155445099},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.08453434705734253},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.07465663552284241},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1098/rspa.1961.0120","doi":"https://doi.org/10.1098/rspa.1961.0120","is_oa":false,"landing_page_url":"https://doi.org/10.1098/rspa.1961.0120","pdf_url":null,"source":{"id":"https://openalex.org/S4210212881","display_name":"Proceedings of the Royal Society of London A Mathematical and Physical Sciences","issn_l":"0080-4630","issn":["0080-4630","2053-9169"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319787","host_organization_name":"Royal Society","host_organization_lineage":["https://openalex.org/P4310319787"],"host_organization_lineage_names":["Royal Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"display_name":"Life below water","score":0.44999998807907104,"id":"https://metadata.un.org/sdg/14"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W143788768","https://openalex.org/W1963704392","https://openalex.org/W1967402832","https://openalex.org/W1971657511","https://openalex.org/W1990315338","https://openalex.org/W1999877477","https://openalex.org/W2028224747","https://openalex.org/W2035481966","https://openalex.org/W2038859212","https://openalex.org/W2040008261","https://openalex.org/W2046554760","https://openalex.org/W2254582743","https://openalex.org/W2320572933","https://openalex.org/W2324129322","https://openalex.org/W2996070834","https://openalex.org/W4244134199","https://openalex.org/W4245669350"],"related_works":["https://openalex.org/W1040118206","https://openalex.org/W2391145968","https://openalex.org/W2361826783","https://openalex.org/W2067229394","https://openalex.org/W2016660140","https://openalex.org/W2054021433","https://openalex.org/W4232514015","https://openalex.org/W2354611255","https://openalex.org/W1591139189","https://openalex.org/W1818535685"],"abstract_inverted_index":{"Abstract":[0],"The":[1,140,159,210],"spectra":[2,56,121,129,141,171,178,190,214,220,254,268],"of":[3,10,27,38,54,60,63,88,92,130,142,169,172,179,187,206,240,258,261],"many":[4,270],"diatomic":[5,64,94,180],"free":[6,95,143,242,263],"radicals":[7,96,145],"like":[8],"those":[9],"CH,":[11],"OH,":[12],"NH,":[13],"C2,":[14],"CN":[15],"have":[16,146],"been":[17,225,246],"known":[18],"and":[19,45,68,80,136,149,212,221,265],"identified":[20],"as":[21,174],"such":[22],"almost":[23],"since":[24],"the":[25,41,52,61,72,77,81,89,93,99,128,137,153,165,170,177,184,207,218,256,259],"beginning":[26],"molecular":[28],"spectroscopy.":[29],"They":[30],"occur":[31],"readily":[32],"in":[33,35,46,69,98,127,152,191,200],"emission":[34],"a":[36,106,123,228,241],"variety":[37],"flames":[39],"(including":[40],"ordinary":[42],"Bunsen":[43],"burner)":[44],"electric":[47],"discharges.":[48],"It":[49,113],"was":[50,66],"through":[51],"study":[53,109,257],"these":[55,120,189,266],"that":[57,71,119],"our":[58],"knowledge":[59],"structure":[62,260],"molecules":[65,181,195],"developed":[67],"particular":[70],"different":[73],"coupling":[74],"conditions":[75],"between":[76],"electron":[78],"spin":[79],"other":[82],"angular":[83],"momenta":[84],"were":[85],"recognized.":[86],"Most":[87],"resonance":[90],"transitions":[91],"lie":[97],"visible":[100],"or":[101,156,203],"near":[102],"ultra-violet":[103],"region":[104],"where":[105],"detailed":[107],"high-resolution":[108],"is":[110,114,164,249],"easily":[111,197],"possible.":[112],"for":[115,161,227,255],"this":[116,162],"reason":[117,160],"also":[118],"play":[122],"most":[124],"prominent":[125],"part":[126],"astrophysical":[131],"sources:":[132],"comets,":[133],"low-temperature":[134],"stars":[135],"interstellar":[138],"medium.":[139],"polyatomic":[144,173,194,243,262],"become":[147],"recognized":[148],"analyzed":[150],"only":[151],"last":[154],"ten":[155],"fifteen":[157],"years.":[158],"delay":[163],"much":[166],"greater":[167,185],"complexity":[168],"compared":[175],"to":[176,233],"combined":[182],"with":[183],"difficulty":[186],"exciting":[188],"emission.":[192],"Ordinary":[193],"can":[196],"be":[198],"studied":[199],"infra-red":[201,211,236],"absorption":[202],"by":[204],"means":[205],"Raman":[208,213],"effect.":[209],"are":[215],"simpler":[216],"than":[217],"electronic":[219,253,267],"their":[222],"interpretation":[223],"has":[224,245],"established":[226],"long":[229],"time;":[230],"but":[231],"up":[232],"now":[234],"no":[235],"(or":[237],"Raman)":[238],"spectrum":[239],"radical":[244],"obtained.":[247],"One":[248],"entirely":[250],"dependent":[251],"on":[252],"radicals,":[264],"exhibit":[269],"complexities.":[271]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":4}],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2016-06-24T00:00:00"}