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

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

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

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 language	English
Pages (from-to)	1719-1724
Number of pages	6
Journal	Organometallics
Volume	20
Issue number	9
Publication status	Published - Apr 30 2001

ASJC Scopus subject areas

Inorganic Chemistry
Organic Chemistry

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@article{6c90264a5d754cb79315738dd1c7993b,

title = "Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation",

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.",

author = "Gauvin, {R{\'e}gis M.} and Haim Rozenberg and Shimon, {Linda J W} and David Milstein",

year = "2001",

month = apr,

day = "30",

language = "English",

volume = "20",

pages = "1719--1724",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "9",

}

TY - JOUR

T1 - Synthesis and structure of new osmium-PCP complexes. Osmium-mediated C-C bond activation

AU - Gauvin, Régis M.

AU - Rozenberg, Haim

AU - Shimon, Linda J W

AU - Milstein, David

PY - 2001/4/30

Y1 - 2001/4/30

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.

AB - 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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VL - 20

SP - 1719

EP - 1724

JO - Organometallics

JF - Organometallics

SN - 0276-7333

IS - 9

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