ON THE FORMATION OF A FE-2(CO)(6) COMPLEX WITH A (BORYLOXY)ALLYL BRIDGE

The amino(imino)borane Me(3)Si(tBu)N - B double bond NtBu (1) reacts w ith (benzylideneacetone)tricarbonyliron (2) in 1:2 molar ratio to give a 50% yield of the hexacarbonyldiiron complex 3 with a fly-over (bory loxy)allyl bridge, which crystallizes in the space group P2(1)/c. The structure of 3 can be described as a pyramid with Fe(CO)(3) at the ape x and a non-planar pentagon [-Fe(CO)3-O(BXX')-C(Me)-CH-C(Ph)-] [X = NH tBu, X' = N(SiMe(3))tBu] as the basis, but there is no bond between th e apex and the O atom.