TY - JOUR
T1 - Synthesis of a Stable Methylidyne Complex
AU - Hill, Anthony F.
AU - Ward, Jas S.
AU - Xiong, Yaoyao
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/10/26
Y1 - 2015/10/26
N2 - The successive treatment of [W(CO)6] with LiSiPh3, (OCBr)2, and 4-picoline (pic) affords the silylcarbyne complex [W(≡CSiPh3)Br(CO)2(pic)2], which reacts with 1,2-bis(dicyclohexylphoshino)ethane (dcpe), 1,2-bis(diphenylphosphino)ethane (dppe), and tetramethylethylenediamine (tmeda) to provide the complexes [W(≡CSiPh3)Br(CO)2(L2)] (L2 = dcpe, dppe, tmeda). Fluoride-mediated protodesilylation of [W(≡CSiPh3)Br(CO)2(dcpe)] with moist [Bu4N]F provides the stable and structurally characterized terminal methylidyne complex [W(≡CH)Br(CO)2(dcpe)] (shown) in addition to traces of the ethene-1,2-diylidyne complex {Br(dcpe)(CO)2W}2(μ-≡CCH=CHC≡).
AB - The successive treatment of [W(CO)6] with LiSiPh3, (OCBr)2, and 4-picoline (pic) affords the silylcarbyne complex [W(≡CSiPh3)Br(CO)2(pic)2], which reacts with 1,2-bis(dicyclohexylphoshino)ethane (dcpe), 1,2-bis(diphenylphosphino)ethane (dppe), and tetramethylethylenediamine (tmeda) to provide the complexes [W(≡CSiPh3)Br(CO)2(L2)] (L2 = dcpe, dppe, tmeda). Fluoride-mediated protodesilylation of [W(≡CSiPh3)Br(CO)2(dcpe)] with moist [Bu4N]F provides the stable and structurally characterized terminal methylidyne complex [W(≡CH)Br(CO)2(dcpe)] (shown) in addition to traces of the ethene-1,2-diylidyne complex {Br(dcpe)(CO)2W}2(μ-≡CCH=CHC≡).
UR - http://www.scopus.com/inward/record.url?scp=84945947295&partnerID=8YFLogxK
U2 - 10.1021/acs.organomet.5b00635
DO - 10.1021/acs.organomet.5b00635
M3 - Article
SN - 0276-7333
VL - 34
SP - 5057
EP - 5064
JO - Organometallics
JF - Organometallics
IS - 20
ER -