@unpublished{HermannCidMattocketal.2018,
  author    = {Hermann, Alexander and Cid, Jessica and Mattock, James D. and Dewhurst, Rian D. and Krummenacher, Ivo and Vargas, Alfredo and Ingleson, Michael J. and Braunschweig, Holger},
  title     = {Diboryldiborenes: π-Conjugated B\(_4\) Chains Isoelectronic to the Butadiene Dication},
  series = {Angewandte Chemie, International Edition},
  journal   = {Angewandte Chemie, International Edition},
  doi       = {10.1002/anie.201805394},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-167977},
  year      = {2018},
  abstract  = {sp\(^2\)-sp\(^3\) diborane species based on bis(catecholato)diboron and N-heterocyclic carbenes (NHCs) are subjected to catechol/bromide exchange selectively at the sp\(^3\) boron atom. The reduction of the resulting 1,1-dibromodiborane adducts led to reductive coupling and isolation of doubly NHC-stabilized 1,2-diboryldiborenes. These compounds are the first examples of molecules exhibiting pelectron delocalization over an all-boron chain.},
  language  = {en}
}
@unpublished{CidHermannRadcliffeetal.2018,
  author    = {Cid, Jessica and Hermann, Alexander and Radcliffe, James E. and Curless, Liam D. and Braunschweig, Holger and Ingleson, Michael J.},
  title     = {Synthesis of Unsymmetrical Diboron(5) Compounds and Their Conversion to Diboron(5) Cations},
  series = {Organometallics},
  journal   = {Organometallics},
  doi       = {10.1021/acs.organomet.8b00288},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-164299},
  year      = {2018},
  abstract  = {Reaction of bis-catecholatodiboron-NHC adducts, B\(_2\)Cat\(_2\)(NHC), (NHC = IMe (tetramethylimidazol-2-ylidene), IMes (1,3-dimesitylimidazol-2-ylidene) or IDIPP (1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)) with BCl3 results in the replacement of the catecholato group bound to the four coordinate boron with two chlorides to yield diboron(5) Lewis acid-base adducts of formula CatB-BCl\(_2\)(NHC). These compounds are precursors to diboron(5) monocations, accessed by adding AlCl\(_3\) or K[B(C\(_6\)F\(_5\))\(_4\)] as halide abstraction agents in the presence of a Lewis base. The substitution of the chlorides of CatB-BCl\(_2\)(NHC) for hydrides is achieved using Bu\(_3\)SnH and a halide abstracting agent to form 1,1-dihydrodiboron(5) compounds, CatB-BH\(_2\)(NHC). Attempts to generate diboron(4) monocations of formula [CatB-B(Y)(NHC)]\(^+\) (Y = Cl or H) led to the rapid formation of CatBY.},
  language  = {en}
}