Activation of a vinyl carbon–hydrogen bond in a tris(pyrazolyl)boratoiridium complex. The X-ray crystal structure of [IrH{HB(pz)3}(σ-C8H13)(η2-C8H14)]
- 1 January 1989
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 2073-2076
- https://doi.org/10.1039/dt9890002073
Abstract
Reaction between [(Ir(µ-Cl)(C8H14)2}2](C8H14= cyclo-octene) and Na[ HB(pz)](pz = pyrazolyl) affords the vinyl hydrido complex [IrH{HB(pz)3}(σ-C8H13)(η2-C8H14)]. Protonation of this complex gives [IrH{HB(pz)3}(η2-C8H14)2]BF4. Treatment of [IrCl(C2H4)4] with Na[HB(pz)3] yields [Ir{HB(pz)3)(η2-C2H4)2]. The molecular structure of [IrH{HB(pz)3}(σ-C8H13)(η2-C8H14)](1) has been determined by X-ray analysis. Crystals of (1) are monoclinic, space group P21/n, with a= 20.284(2), b= 12.265(1), c= 20.554(2)Å, β= 97.103(7)°, and Z= 8. The co-ordination around the iridium atom is distorted octahedral involving the three N atoms from the tris(pyrazolyl) borato on one side, and a hydride, a π-bonded cycle-octene, and a π-bonded cyclo-octenyl group on the other; the last three ligands are mutually cis.Keywords
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