Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation

Régis M. Gauvin, Haim Rozenberg, Linda J W Shimon, David Milstein

Research output: Contribution to journalArticle

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Abstract

The new complex Os{1,3-(iPr2PCH2)2 C6H3}(Cl)(PPh3) (2) was obtained from the reaction between the diphosphine {1,3-(iPr2 PCH2)2C6H4} (1) and OsCl2(PPh3)3. 2 reacts with H2 to yield the dihydrido species Os{1,3-(iPr2 PCH2)2C6H3}(H)2(Cl) (PPh3) (3). Addition of 1 equiv of carbon monoxide to 2 led to the formation of Os{1,3-(iPr2PCH2)2 C6H3}(CO)(Cl)(PPh3) (4), while in the presence of excess CO, the bis-carbonyl complex Os{1,3-(iPr2PCH2)2C6 H3}(CO)2-(Cl) (5) was formed. Both 2 and 5 were structurally characterized by X-ray diffraction studies. The reaction of OsCl2(PPh3)3 (under hydrogen pressure) and OsHCl(PPh3)3 with the diphosphine {1,3,5-(CH3)3-2,6-(iPr2 PCH2)2C6H} (6) led to the formation of the C-C activation products Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(H2)(Cl)(PPh3) (7) and Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(Cl)(PPh3) (8), respectively.

Original languageEnglish
Pages (from-to)1719-1724
Number of pages6
JournalOrganometallics
Volume20
Issue number9
Publication statusPublished - Apr 30 2001

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Osmium
osmium
Carbon Monoxide
Chemical activation
activation
synthesis
carbon monoxide
hydrogen
products
diffraction
Hydrogen
x rays
X ray diffraction

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry

Cite this

Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation. / Gauvin, Régis M.; Rozenberg, Haim; Shimon, Linda J W; Milstein, David.

In: Organometallics, Vol. 20, No. 9, 30.04.2001, p. 1719-1724.

Research output: Contribution to journalArticle

Gauvin, RM, Rozenberg, H, Shimon, LJW & Milstein, D 2001, 'Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation', Organometallics, vol. 20, no. 9, pp. 1719-1724.
Gauvin, Régis M. ; Rozenberg, Haim ; Shimon, Linda J W ; Milstein, David. / Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation. In: Organometallics. 2001 ; Vol. 20, No. 9. pp. 1719-1724.
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abstract = "The new complex Os{1,3-(iPr2PCH2)2 C6H3}(Cl)(PPh3) (2) was obtained from the reaction between the diphosphine {1,3-(iPr2 PCH2)2C6H4} (1) and OsCl2(PPh3)3. 2 reacts with H2 to yield the dihydrido species Os{1,3-(iPr2 PCH2)2C6H3}(H)2(Cl) (PPh3) (3). Addition of 1 equiv of carbon monoxide to 2 led to the formation of Os{1,3-(iPr2PCH2)2 C6H3}(CO)(Cl)(PPh3) (4), while in the presence of excess CO, the bis-carbonyl complex Os{1,3-(iPr2PCH2)2C6 H3}(CO)2-(Cl) (5) was formed. Both 2 and 5 were structurally characterized by X-ray diffraction studies. The reaction of OsCl2(PPh3)3 (under hydrogen pressure) and OsHCl(PPh3)3 with the diphosphine {1,3,5-(CH3)3-2,6-(iPr2 PCH2)2C6H} (6) led to the formation of the C-C activation products Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(H2)(Cl)(PPh3) (7) and Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(Cl)(PPh3) (8), respectively.",
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N2 - The new complex Os{1,3-(iPr2PCH2)2 C6H3}(Cl)(PPh3) (2) was obtained from the reaction between the diphosphine {1,3-(iPr2 PCH2)2C6H4} (1) and OsCl2(PPh3)3. 2 reacts with H2 to yield the dihydrido species Os{1,3-(iPr2 PCH2)2C6H3}(H)2(Cl) (PPh3) (3). Addition of 1 equiv of carbon monoxide to 2 led to the formation of Os{1,3-(iPr2PCH2)2 C6H3}(CO)(Cl)(PPh3) (4), while in the presence of excess CO, the bis-carbonyl complex Os{1,3-(iPr2PCH2)2C6 H3}(CO)2-(Cl) (5) was formed. Both 2 and 5 were structurally characterized by X-ray diffraction studies. The reaction of OsCl2(PPh3)3 (under hydrogen pressure) and OsHCl(PPh3)3 with the diphosphine {1,3,5-(CH3)3-2,6-(iPr2 PCH2)2C6H} (6) led to the formation of the C-C activation products Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(H2)(Cl)(PPh3) (7) and Os{3,5-(CH3)-2,6-(iPr2 PCH2)2C6H}(Cl)(PPh3) (8), respectively.

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