{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Townsend EM"],"funding":["National Institute of General Medical Sciences","NIGMS NIH HHS"],"pagination":["5334-5341"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4195517"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["33(19)"],"pubmed_abstract":["Imido alkylidene complexes of Mo and W and oxo alkylidene complexes of W that contain thiophenoxide ligands of the type S-2,3,5,6-Ph<sub>4</sub>C<sub>6</sub>H (STPP) and S-2,6-(mesityl)<sub>2</sub>C<sub>6</sub>H<sub>3</sub> (SHMT = S-hexamethylterphenyl) have been prepared in order to compare their metathesis activity with that of the analogous phenoxide complexes. All thiolate complexes were significantly slower (up to ∼10× slower) for the metathesis homocoupling of 1-octene or polymerization of 2,3-dicarbomethoxynorbornene, and none of them was <i>Z</i>-selective. The slower rates could be attributed to the greater σ-donating ability of a thiophenoxide versus the analogous phenoxide and consequently a higher electron density at the metal in the thiophenoxide complexes."],"journal":["Organometallics"],"pubmed_title":["Synthesis of Molybdenum and Tungsten Alkylidene Complexes That Contain Sterically Demanding Arenethiolate Ligands."],"pmcid":["PMC4195517"],"funding_grant_id":["R01 GM059426","GM-59426"],"pubmed_authors":["Muller P","Schrock RR","Townsend EM","Hoveyda AH","Hyvl J","Forrest WP"],"additional_accession":[]},"is_claimable":false,"name":"Synthesis of Molybdenum and Tungsten Alkylidene Complexes That Contain Sterically Demanding Arenethiolate Ligands.","description":"Imido alkylidene complexes of Mo and W and oxo alkylidene complexes of W that contain thiophenoxide ligands of the type S-2,3,5,6-Ph<sub>4</sub>C<sub>6</sub>H (STPP) and S-2,6-(mesityl)<sub>2</sub>C<sub>6</sub>H<sub>3</sub> (SHMT = S-hexamethylterphenyl) have been prepared in order to compare their metathesis activity with that of the analogous phenoxide complexes. All thiolate complexes were significantly slower (up to ∼10× slower) for the metathesis homocoupling of 1-octene or polymerization of 2,3-dicarbomethoxynorbornene, and none of them was <i>Z</i>-selective. The slower rates could be attributed to the greater σ-donating ability of a thiophenoxide versus the analogous phenoxide and consequently a higher electron density at the metal in the thiophenoxide complexes.","dates":{"release":"2014-01-01T00:00:00Z","publication":"2014 Oct","modification":"2025-04-26T20:02:18.106Z","creation":"2019-03-27T01:37:30Z"},"accession":"S-EPMC4195517","cross_references":{"pubmed":["25328267"],"doi":["10.1021/om500655n"]}}