title: Reactivity of the metal-->BX3 dative sigma-bond: 1,2-addition reactions of the Fe-->BX3 moiety of the ferraboratrane complex [kappa4-B(mimBu t)3]Fe(CO)2.
abstract: The ferraboratrane [kappa4-B(mim(Bu)t)3]Fe(CO)2 (mim(Bu)t = 2-mercapto-1-tert-butylimidazolyl), the first example of a complex which possesses a retrodative (i.e., metal-to-ligand) Fe-->B bond, is obtained via reaction of the tris(2-mercapto-1-tert-butylimidazolyl)hydroborato complex [Tm(Bu)t]FeCl with LiCH2SiMe3 followed by treatment with CO. Significantly, [kappa4-B(mim(Bu)t)3]Fe(CO)2 exhibits novel reactivity towards a variety of reagents that results in eradication of the Fe-->B bond via a formal 1,2-addition process and the formation of B-functionalized tris(mercaptoimidazolyl)borate derivatives, [XTm(Bu)t]FeY.
authors.affiliation: Department of Chemistry, Columbia University, New York, NY 10027, USA.
authors.forename: Joshua S
authors.initials: JS
authors.lastname: Figueroa
authors.forename: Jonathan G
authors.initials: JG
authors.lastname: Melnick
authors.forename: Gerard
authors.initials: G
authors.lastname: Parkin
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D007501:Iron / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D001896:Boron Compounds; D008024:Ligands; D009942:Organometallic Compounds; D007501:Iron