Journal
DALTON TRANSACTIONS
Volume 48, Issue 33, Pages 12512-12521Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt00602h
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Funding
- Natural Sciences and Engineering Research Council (NSERC) of Canada [RGPIN/04528-2017]
- Canada Foundation for Innovation (CFI)
- government of Ontario
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Phosphaamidine metal complexes Rh2Cl2[Ph2PC(Ph)& xe001;NPh](2)mu-CO (1), RuCl2[Ph2PC(Ph)& xe001;N(Ph)](2) (2), [Rh{(Pr2PC)-Pr-i(Ph)& xe001;(NPr)-Pr-i}(COD)]BF4 (3), and RuCl2[(Pr2PC)-Pr-i(Ph)& xe001;(NPr)-Pr-i](DMSO)(2) (4) are prepared by combining phosphaamidines Ph2P-C(Ph)& xe001;NPh and (Pr2P)-Pr-i-C(Ph)& xe001;(NPr)-Pr-i (1,3-P,N) with their corresponding metal ions. Complexes 1 and 2 are stable in air while 3 and 4 are stable under inert conditions. For further comparison of structure and stability, a Ru(ii) phosphaguanidine complex, RuCl2[Me2NC(PPh2)& xe001;(NPr)-Pr-i](DMSO)(2) (6) was prepared. Complex 6 is stable in air and in the presence of water. The structures of the phosphaamidine and phosphaguanidine complexes, determined using single crystal X-ray diffraction, revealed P,N bidentate coordination. While all five complexes have some activity as precatalysts, complex 6 was the most active.
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