Journal of Organometallic Chemistry p. 167 - 175 (1997)
Update date:2022-08-16
Topics:
Lindner, Ekkehard
Leibfritz, Thomas
Fawzi, Riad
Steimann, Manfred
The reaction of the bis(triflates) [Y-(CH2)m-Y] [Y = F3CSO3, m = 4, 6-9, 12, 14, 16 (1a-h)] with the carbonyl metalates M′[M(CO)5] (M′ = Na, K; M = Mn, Re) affords the alkanediyl bridged metal complexes [(OC)5M-(CH2)m-M(CO)5] [m = 6-9, 12, 14, 16; M = Mn (2b-h) and m = 4, 6-9, 12, 14, 16; M = Re (3a-h)]. Starting with K[Mn(CO)5] and the bis(triflates) 1d and 1e the diesters [H3CO(O)C(CH2)mC(O)OCH3] [m = 8, 9 (4d,e)] are obtained in a one-pot reaction. The unsaturated hydrocarbon bridged rhenium complexes trans-[Re]-(CH2)2-CH=CH-(CH2)2-[Re] (6), cis-[Re]-(CH2)3-CH=CH-(CH2)3-[Re] (8), and [Re]-(CH2)p-CH2-C≡C-CH2-(CH2)p-[Re] {[Re] = Re(CO)5, p = 1, 3 (11, 12)} are formed by reaction of the bis(triflates) trans-Y-(CH2)2-CH=CH-(CH2)2-Y (5), cis-Y-(CH2)3-CH=CH-(CH2)3-Y (7), and Y-(CH2)p-CH2-C≡C-CH2-(CH2)p-Y [Y = F3CSO3, p = 1, 3 (9, 10)] with Na[Re(CO)5] in THF. The structure of 8 was determined by an X-ray structural analysis. Crystal data for 8: space group P21/n with a = 12.501(2), b = 6.592(2), c = 26.875(5)A, β = 93.28(2)°, V = 2211.0(9)A3, Z = 4. The structure was refined to R = 0.039, wR = 0.090.
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