A novel route to butatrienylidene complexes: stabilisation of :C![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
CCCH2 on Ru5 clusters
Abstract
Addition of C2(SiMe3)2 to [Ru5(µ5-C2)(µ-PPh2)2(µ-SMe)2(CO)11]1 affords an isomeric mixture of [Ru5{µ4-CCCCH(SiMe3)}(µ-PPh2)2(µ-SMe)(µ3-SMe)(CO)10]2, alkaline hydrolysis of which gives the first stable butatrienylidene complex [Ru5(µ4-CCCCH2)(µ-PPh2)2(µ-SMe)(µ3-SMe)(CO)10]3; carbonylation of 3 affords produces the spiked-rhomboidal pentanuclear complex [Ru5(µ5-CCCCH2)(µ-PPh2)2(µ-SMe)2(CO)11]4; the X-ray structures of 3 and 4 are reported.
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![[double bond, length half m-dash]](https://www.rsc.org/images/entities/h2_char_e006.gif)
C
