Fgn. Cloke et al., SYNTHESIS, CHARACTERIZATION AND FLUXIONAL BEHAVIOR OF ETA(5)-P(2)C(3)BU(3)(T))(ETA(3)-P(2)C(3)BU(3)(T))], Journal of organometallic chemistry, 487(1-2), 1995, pp. 21-23
Treatment of either [Na(DME)(3)][P(2)C(3)Bu(3)(t)] or [Yb(P(2)C(3)Bu(3
)(t))(2)] with [NiBr2(DME)(2)] affords the title compound which displa
ys eta(5)-eta(3)-''ring slippage'' behaviour in solution.