TY - JOUR
T1 - Potassium S2N-heteroscorpionates
T2 - Structure and iridaboratrane formation
AU - López-Gómez, María J.
AU - Connelly, Neil G.
AU - Haddow, Mairi F.
AU - Hamilton, Alex
AU - Lusi, Matteo
AU - Baisch, Ulrich
AU - Orpen, A. Guy
PY - 2011/5/7
Y1 - 2011/5/7
N2 - The potassium salts of the new S2N-heteroscorpionate ligand hydrobis(methimazolyl)(3,5-dimethylpyrazolyl)borate [HB(mt)2(pz 3,5-Me)]- and its known analogue hydrobis(methimazolyl) (pyrazolyl)borate [HB(mt)2(pz)]- (prepared from KTp′ or KTp and methimazole, Hmt), and the adduct KTp·Hmt have polymeric structures in the solid state (the first a ladder and the other two chains). The iridaboratranes [IrHLL′{B(mt)2X}] (X = pz3,5-Me or pz), prepared from the heteroscorpionate anion and [{Ir(cod)(μ-Cl)} 2] (LL′ = cod), subsequent carbonylation [LL′ = (CO) 2] and then reaction with phosphine [LL′ = (CO)(PR 3), R = Ph or Cy], have a pendant pyrazolyl ring and a bicyclo-[3.3.0] cage formed by an S2-bound B(mt)2 fragment. The binuclear species [(cod)HIr{μ-B(mt)3}IrCl(cod)], the only isolated product of the reaction of KTm with [{Ir(cod)(μ-Cl)} 2], also has an S2-bound iridaboratrane unit but with the third mt ring linked to square planar iridium(i).
AB - The potassium salts of the new S2N-heteroscorpionate ligand hydrobis(methimazolyl)(3,5-dimethylpyrazolyl)borate [HB(mt)2(pz 3,5-Me)]- and its known analogue hydrobis(methimazolyl) (pyrazolyl)borate [HB(mt)2(pz)]- (prepared from KTp′ or KTp and methimazole, Hmt), and the adduct KTp·Hmt have polymeric structures in the solid state (the first a ladder and the other two chains). The iridaboratranes [IrHLL′{B(mt)2X}] (X = pz3,5-Me or pz), prepared from the heteroscorpionate anion and [{Ir(cod)(μ-Cl)} 2] (LL′ = cod), subsequent carbonylation [LL′ = (CO) 2] and then reaction with phosphine [LL′ = (CO)(PR 3), R = Ph or Cy], have a pendant pyrazolyl ring and a bicyclo-[3.3.0] cage formed by an S2-bound B(mt)2 fragment. The binuclear species [(cod)HIr{μ-B(mt)3}IrCl(cod)], the only isolated product of the reaction of KTm with [{Ir(cod)(μ-Cl)} 2], also has an S2-bound iridaboratrane unit but with the third mt ring linked to square planar iridium(i).
UR - http://www.scopus.com/inward/record.url?scp=79954601366&partnerID=8YFLogxK
U2 - 10.1039/c0dt01718c
DO - 10.1039/c0dt01718c
M3 - Article
AN - SCOPUS:79954601366
SN - 1477-9226
VL - 40
SP - 4647
EP - 4659
JO - Dalton Transactions
JF - Dalton Transactions
IS - 17
ER -
