{"id":"https://openalex.org/W1996830652","doi":"https://doi.org/10.1021/om950783a","title":"Reactivity of Acetylenes toward the Titanocene Vinylidene Fragment [Cp*2TiCCH2]. Formation of Methylenetitanacyclobutenes and Vinyltitanium Acetylides. Crystal and Molecular Structures of Cp*2TiCR\u2018CR\u2018\u2018CCH2 (R\u2018 = R\u2018\u2018 = CH3; R\u2018 = SiMe3, R\u2018\u2018 = C6H5) and Cp*2Ti(CHCH2)(C\u22eeCPh)","display_name":"Reactivity of Acetylenes toward the Titanocene Vinylidene Fragment [Cp*2TiCCH2]. Formation of Methylenetitanacyclobutenes and Vinyltitanium Acetylides. Crystal and Molecular Structures of Cp*2TiCR\u2018CR\u2018\u2018CCH2 (R\u2018 = R\u2018\u2018 = CH3; R\u2018 = SiMe3, R\u2018\u2018 = C6H5) and Cp*2Ti(CHCH2)(C\u22eeCPh)","publication_year":1996,"publication_date":"1996-02-20","ids":{"openalex":"https://openalex.org/W1996830652","doi":"https://doi.org/10.1021/om950783a","mag":"1996830652"},"language":"en","primary_location":{"id":"doi:10.1021/om950783a","doi":"https://doi.org/10.1021/om950783a","is_oa":false,"landing_page_url":"https://doi.org/10.1021/om950783a","pdf_url":null,"source":{"id":"https://openalex.org/S4924609","display_name":"Organometallics","issn_l":"0276-7333","issn":["0276-7333","1520-6041"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-1","norway-2","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Organometallics","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5027772285","display_name":"R\u00fcdiger Beckhaus","orcid":"https://orcid.org/0000-0003-3697-0378","observed_orcids":["https://orcid.org/0000-0003-3697-0378"]},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"R\u00fcdiger Beckhaus","raw_affiliation_strings":["Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044291361","display_name":"Javier Sang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Javier Sang","raw_affiliation_strings":["Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111204443","display_name":"Trixie Wagner","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Trixie Wagner","raw_affiliation_strings":["Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060661685","display_name":"Beate Ganter","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Beate Ganter","raw_affiliation_strings":["Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Inorganic Chemistry, Technical University Aachen, Professor-Pirlet-Strasse 1, D-52062 Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I887968799"],"apc_list":{"value":4500,"currency":"USD","value_usd":4500},"apc_paid":null,"fwci":7.6782,"has_fulltext":false,"cited_by_count":67,"citation_normalized_percentile":{"value":0.98439969,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"15","issue":"4","first_page":"1176","last_page":"1187"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10092","display_name":"Organometallic Complex Synthesis and Catalysis","score":0.9916999936103821,"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"}},"topics":[{"id":"https://openalex.org/T10092","display_name":"Organometallic Complex Synthesis and Catalysis","score":0.9916999936103821,"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/T10807","display_name":"Synthesis and characterization of novel inorganic/organometallic compounds","score":0.003100000089034438,"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/T10871","display_name":"Catalytic Alkyne Reactions","score":0.0015999999595806003,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/2-2-cycloaddition","display_name":"[2+2] cycloaddition","score":0.8999999761581421},{"id":"https://openalex.org/keywords/acetylene","display_name":"acetylene","score":0.6830000281333923},{"id":"https://openalex.org/keywords/alkynes","display_name":"alkynes","score":0.5580000281333923},{"id":"https://openalex.org/keywords/regioisomers","display_name":"regioisomers","score":0.6970000267028809},{"id":"https://openalex.org/keywords/c-h-activation","display_name":"C\u2013H activation","score":0.7129999995231628},{"id":"https://openalex.org/keywords/organotitanium-chemistry","display_name":"organotitanium chemistry","score":0.5109999775886536},{"id":"https://openalex.org/keywords/crystal-structure","display_name":"crystal structure","score":0.5490000247955322},{"id":"https://openalex.org/keywords/molecular-structure","display_name":"molecular structure","score":0.7279999852180481},{"id":"https://openalex.org/keywords/ethylene-removal","display_name":"ethylene removal","score":0.4970000088214874},{"id":"https://openalex.org/keywords/methane-removal","display_name":"methane removal","score":0.6140000224113464},{"id":"https://openalex.org/keywords/1-pentyne","display_name":"1-pentyne","score":0.4950000047683716}],"concepts":[{"id":"https://openalex.org/C2777197226","wikidata":"https://www.wikidata.org/wiki/Q151446","display_name":"Propyne","level":2,"score":0.8593038320541382},{"id":"https://openalex.org/C2777517455","wikidata":"https://www.wikidata.org/wiki/Q133145","display_name":"Acetylene","level":2,"score":0.8418561220169067},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.818150520324707},{"id":"https://openalex.org/C2778545935","wikidata":"https://www.wikidata.org/wiki/Q417321","display_name":"Phenylacetylene","level":3,"score":0.7723665237426758},{"id":"https://openalex.org/C2781019423","wikidata":"https://www.wikidata.org/wiki/Q902100","display_name":"Diphenylacetylene","level":3,"score":0.7387586832046509},{"id":"https://openalex.org/C2779664164","wikidata":"https://www.wikidata.org/wiki/Q898648","display_name":"Cycloaddition","level":3,"score":0.7241998910903931},{"id":"https://openalex.org/C2777000832","wikidata":"https://www.wikidata.org/wiki/Q419853","display_name":"Trimethylsilyl","level":2,"score":0.6552088856697083},{"id":"https://openalex.org/C2779012754","wikidata":"https://www.wikidata.org/wiki/Q159226","display_name":"Alkyne","level":3,"score":0.6386383175849915},{"id":"https://openalex.org/C155647269","wikidata":"https://www.wikidata.org/wiki/Q243455","display_name":"Medicinal chemistry","level":1,"score":0.6022866368293762},{"id":"https://openalex.org/C2777600838","wikidata":"https://www.wikidata.org/wiki/Q904788","display_name":"Dimethyl acetylenedicarboxylate","level":4,"score":0.5324735641479492},{"id":"https://openalex.org/C71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","level":1,"score":0.5080561637878418},{"id":"https://openalex.org/C196099240","wikidata":"https://www.wikidata.org/wiki/Q177033","display_name":"Triple bond","level":3,"score":0.45482945442199707},{"id":"https://openalex.org/C115624301","wikidata":"https://www.wikidata.org/wiki/Q895901","display_name":"Crystal structure","level":2,"score":0.445382297039032},{"id":"https://openalex.org/C32909587","wikidata":"https://www.wikidata.org/wiki/Q11369","display_name":"Molecule","level":2,"score":0.43842262029647827},{"id":"https://openalex.org/C59759590","wikidata":"https://www.wikidata.org/wiki/Q2275927","display_name":"Regioselectivity","level":3,"score":0.4173002541065216},{"id":"https://openalex.org/C68381374","wikidata":"https://www.wikidata.org/wiki/Q258652","display_name":"Double bond","level":2,"score":0.24069374799728394},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.20907849073410034},{"id":"https://openalex.org/C161790260","wikidata":"https://www.wikidata.org/wiki/Q82264","display_name":"Catalysis","level":2,"score":0.0856432318687439}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1021/om950783a","doi":"https://doi.org/10.1021/om950783a","is_oa":false,"landing_page_url":"https://doi.org/10.1021/om950783a","pdf_url":null,"source":{"id":"https://openalex.org/S4924609","display_name":"Organometallics","issn_l":"0276-7333","issn":["0276-7333","1520-6041"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-1","norway-2","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Organometallics","raw_type":"journal-article"},{"id":"pmh:oai:publications.rwth-aachen.de:135490","doi":null,"is_oa":false,"landing_page_url":"https://publications.rwth-aachen.de/record/135490","pdf_url":null,"source":{"id":"https://openalex.org/S4306401362","display_name":"RWTH Publications (RWTH Aachen)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I887968799","host_organization_name":"RWTH Aachen University","host_organization_lineage":["https://openalex.org/I887968799"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Organometallics 15(4), 1176-1187 (1996). doi:10.1021/om950783a","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":83,"referenced_works":["https://openalex.org/W256075526","https://openalex.org/W1967505560","https://openalex.org/W1967999103","https://openalex.org/W1969597499","https://openalex.org/W1970403620","https://openalex.org/W1971261218","https://openalex.org/W1971526324","https://openalex.org/W1971685407","https://openalex.org/W1974168895","https://openalex.org/W1975210960","https://openalex.org/W1988239179","https://openalex.org/W1989293621","https://openalex.org/W1990627154","https://openalex.org/W1990932610","https://openalex.org/W1991025349","https://openalex.org/W1997761064","https://openalex.org/W2000443826","https://openalex.org/W2000777060","https://openalex.org/W2001244761","https://openalex.org/W2001593230","https://openalex.org/W2004224329","https://openalex.org/W2006879276","https://openalex.org/W2007081382","https://openalex.org/W2008222999","https://openalex.org/W2009105741","https://openalex.org/W2010956374","https://openalex.org/W2011135010","https://openalex.org/W2011477617","https://openalex.org/W2017113857","https://openalex.org/W2017950057","https://openalex.org/W2022461037","https://openalex.org/W2022483328","https://openalex.org/W2022602199","https://openalex.org/W2024053543","https://openalex.org/W2024148253","https://openalex.org/W2028480916","https://openalex.org/W2030003650","https://openalex.org/W2034114575","https://openalex.org/W2034213530","https://openalex.org/W2034455187","https://openalex.org/W2034668184","https://openalex.org/W2037739589","https://openalex.org/W2038353668","https://openalex.org/W2042975218","https://openalex.org/W2046792373","https://openalex.org/W2054697090","https://openalex.org/W2057844079","https://openalex.org/W2060093158","https://openalex.org/W2061195511","https://openalex.org/W2063857283","https://openalex.org/W2064661340","https://openalex.org/W2078172589","https://openalex.org/W2078352498","https://openalex.org/W2089480022","https://openalex.org/W2089846707","https://openalex.org/W2091762148","https://openalex.org/W2093211817","https://openalex.org/W2097524920","https://openalex.org/W2114764129","https://openalex.org/W2140389781","https://openalex.org/W2146914445","https://openalex.org/W2158987844","https://openalex.org/W2163525646","https://openalex.org/W2163867332","https://openalex.org/W2168025146","https://openalex.org/W2340379110","https://openalex.org/W2822504772","https://openalex.org/W2949498127","https://openalex.org/W2949526316","https://openalex.org/W2949828262","https://openalex.org/W2950223313","https://openalex.org/W2951390134","https://openalex.org/W2951628323","https://openalex.org/W2951905124","https://openalex.org/W2953138389","https://openalex.org/W3004446064","https://openalex.org/W3004618668","https://openalex.org/W3004730619","https://openalex.org/W3005179429","https://openalex.org/W3005504426","https://openalex.org/W4238477816","https://openalex.org/W4254958019","https://openalex.org/W4255850407"],"related_works":["https://openalex.org/W1965254908","https://openalex.org/W2157385558","https://openalex.org/W35691372","https://openalex.org/W2030003650","https://openalex.org/W2088125211","https://openalex.org/W6940209590","https://openalex.org/W2114764129","https://openalex.org/W2952738031","https://openalex.org/W3113451353","https://openalex.org/W2949775576"],"abstract_inverted_index":{"The":[0,260,290,297,304,336,348,372],"titanocene":[1],"vinylidene":[2],"intermediate":[3],"[Cp*":[4],"2":[5,9,30,32,34,37,43,46,93,97,173,179,191,194,234,237,264,272,278,284,412,421],"Ti":[6],"C":[7,15,35,333,391],"CH":[8,33,36,45,96,178,193,236,271,283,420],"]":[10],"(":[11,38,50,61,65,69,73,80,98,111,115,119,123,128,157,180,198,210,222,227,242,247,252,273,285,425,429],"4":[12,141],")":[13,19,40,49,82,159,182,224,267,275,281,287],"(Cp*,":[14],"5":[16,20],"(CH":[17],"3":[18,39,48,251,266,269,280],"),":[21,52,63,67,71,75,113,117,121,125,130,200,212,229,244,249,427],"formed":[22],"by":[23,83],"ethylene":[24],"or":[25,126,213,225],"methane":[26],"elimination":[27],"from":[28],"Cp*":[29,42,92,172,190,233,263,277,411],"TiCH":[31,174],"and":[41,76,144,147,160,183,276,311,366,388],"Ti(CH":[44,192,235],")(CH":[47],"11":[51,394,417],"respectively,":[53],"reacts":[54],"with":[55,142,216,356,390],"symmetrical":[56],"alkynes":[57,105,368],"such":[58,108,219],"as":[59,109,220],"acetylene":[60],"12a":[62],"2-butyne":[64],"12b":[66],"1,2-diphenylacetylene":[68],"12c":[70],"1,2-bis(trimethylsilyl)acetylene":[72],"12d":[74],"1,2-bis(tri-":[77],"n":[78,176,196],"-butylstannyl)acetylene":[79],"12e":[81],"a":[84,162,381],"[2":[85,167],"+":[86,168],"2]":[87,169],"cycloaddition":[88,170],"to":[89,321],"give":[90],"metallacyclobutenes":[91],"TiCR":[94],"CRC":[95],"8a":[99,355],"\u2212":[100],"e":[101],").":[102],"When":[103],"unsymmetrical":[104],"are":[106,255,369,396],"used,":[107],"2-pentyne":[110],"13g":[112,143],"2,4-hexadiyne":[114],"13h":[116],"1,4-diphenyl-1,3-butadiyne":[118],"13i":[120],"1-phenyl-1-propyne":[122],"13j":[124],"1-(trimethylsilyl)-2-phenylacetylene":[127],"13k":[129],"different":[131],"regioisomers":[132],"can":[133,150],"be":[134,151],"isolated.":[135],"For":[136],"the":[137,166,184,230,307,322,325,329,339,343,346,375,399,404],"reaction":[138],"products":[139,149],"of":[140,155,165,262,300,306,309,324,331,338,345,350,359,363,374,386],"13j,":[145],"kinetic":[146],"thermodynamic":[148],"distinguished.":[152],"In":[153],"reactions":[154,362,385],"1-pentyne":[156],"13f":[158],"4,":[161],"1:1.5":[163],"mixture":[164],"product":[171],"C(":[175],"Pr)C":[177],"17f":[181],"alkyne":[185],"C\u2212H":[186],"bond":[187],"activation":[188],"product,":[189],")(C\u22eeC-":[195],"Pr)":[197],"19f":[199],"is":[201,302,319],"formed.":[202],"By":[203],"using":[204,315],"stronger":[205],"acidic":[206],"acetylenes,":[207,318],"like":[208],"phenylacetylene":[209],"13l":[211],"terminal":[214],"acetylenes":[215],"bulky":[217],"substituents,":[218],"2,2-dimethyl-3-butyne":[221],"13m":[223],"(trimethylsilyl)acetylene":[226],"13n":[228],"vinyl":[231],"acetylides":[232],")(C\u22eeCR)":[238],"[R":[239,422],"=":[240,423],"Ph":[241,428],"19l":[243,301],"t":[245],"-Bu":[246],"19m":[248],"SiMe":[250],"19n":[253],")]":[254],"isolated":[256],"in":[257,398],"high":[258],"yields.":[259],"structures":[261],"TiC(CH":[265],"C(CH":[268],")C":[270],"8b":[274,387],"TiC(SiMe":[279],"C(Ph)C":[282],"17k":[286],"were":[288],"determined.":[289],"pseudotetrahedral":[291],"molecules":[292],"contain":[293],"planar":[294],"cyclobutene":[295],"rings.":[296],"X-ray":[298],"structure":[299],"presented.":[303],"regioselectivity":[305],"formation":[308,349],"17":[310,379],"its":[312],"regioisomer":[313],"16,":[314],"unsymmetrically":[316],"substituted":[317,367],"attributed":[320],"polarity":[323],"C\u22eeC":[326],"bond,":[327],"on":[328,342],"basis":[330],"13":[332],"NMR":[334],"data.":[335],"reactivity":[337],"methylenetitanacyclobutenes":[340],"depends":[341],"substituents":[344],"alkynes.":[347],"trans":[351],"-poly(acetylene)":[352],"occurs":[353],"via":[354],"an":[357],"excess":[358],"acetylene.":[360],"Analogous":[361],"8b,":[364],"c":[365],"not":[370],"successful.":[371],"isomerization":[373],"titanacyclobutenes":[376],"16":[377],"\u2192":[378],"indicates":[380],"cycloreversion.":[382],"Selective":[383],"insertion":[384],"8c":[389],"6":[392,415],"H":[393,416],"NC":[395,414],"observed":[397],"TiC(R)":[400],"C(R)":[401],"\u03c3-bond":[402],"opposite":[403],"exo":[405],"-methylene":[406],"group,":[407],"forming":[408],"five-membered":[409],"rings":[410],"TiC(":[413],")C(R)":[418],"C(R)C":[419],"Me":[424],"25b":[426],"25c":[430],")].":[431]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":3}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}