Preparation, structures and some reactions of novel diynyl complexes of iron and ruthenium
Abstract
Reactions between HCCC
CSiMe3 and several ruthenium halide precursors have given the complexes Ru(C
CC
CSiMe3)(L2)Cp′
[Cp′
= Cp, L = CO (1), PPh3
(2); Cp′
= Cp*, L2
=
CC
CH)(L2)Cp′
[Cp′
= Cp, L = PPh3
(5); Cp′
= Cp*, L2
=
CC
CAu(PR3)}(L2)Cp′
[Cp′
= Cp, L = PPh3, R = Ph (7); Cp′
= Cp*, L2
=
CC
C{Ru(dppe)Cp*}
(10) was obtained from Ru(C
CC
CH)(dppe)Cp* and RuCl(PPh3)2Cp. Single-crystal X-ray structural determinations of 1–3 and 6–9 are reported, with a comparative determination of the structure of Fe(C
CC
CSiMe3)(dppe)Cp*
(4), and those of a fifth polymorph of {Ru(PPh3)2Cp}2(μ-C
CC
C)
(12), and {Ru(dppe)Cp}2(μ-C
CC
C)
(13).