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?1:?2-P-pyrazolylphosphaalkene complexes of Ruthenium(0)

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posted on 2023-06-09, 03:14 authored by Victoria K Greenacre, Ian CrossleyIan Crossley
An extended range of novel ruthenium phosphaalkene complexes of the type[Ru{?1-N:?2-P,C-P(pz0)=CH(SiMe2R)}(CO)(PPh3)2] (R = Tol, C6H4CF3-p; pz0 = pzMe2, pzCF3, pzMe,CF3; R = Me, C6H4CF3-p; pz0 = pzPh) have been prepared from the respective ruthenaphosphaalkenyls [Ru{P=CH(SiMe2R)}Cl(CO)(PPh3)2] upon treatment with Lipz0. Where R = C6H4CF3-p and pz0 = pzMe2 the complex is characterized by single crystal X-ray diffraction, only the second example of such species being structurally characterized. This indicates enhanced pyramidalisation of the alkenic carbon center when compared with precedent data (R = Me, pz0 = pz) implying an enhanced Ru?p*PC contribution, which can be correlated with the greater donor power of pzMe2. This is similarly reflected in spectroscopic data that reveal significant influence of the pyrazolyl substituents upon the phosphaalkene, stronger donors imparting significantly enhanced shielding to phosphorus; in contrast, a much lesser influence if noted for the silyl substituents.

Funding

Polymetallaphosphacarbons: Toward phosphorus-doped organometallic molecular wires; G1182; ROYAL SOCIETY; UF120021

History

Publication status

  • Published

File Version

  • Published version

Journal

Inorganics

ISSN

2304-6740

Publisher

MDPI

Issue

4

Volume

4

Page range

30

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-10-03

First Open Access (FOA) Date

2016-10-03

First Compliant Deposit (FCD) Date

2016-09-30

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