Limits...
Crystal structure of tricarbon-yl(μ-di-phenyl-phosphido-κ(2) P:P)(methyl-diphenyl-silyl-κSi)bis(tri-phenyl-phosphane-κP)iron(II)platinum(0)(Fe-Pt).

Mohamed AS, Jourdain I, Knorr M, Rousselin Y, Kubicki MM - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The title compound, [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2, represents an example of a phosphido-bridged heterobimetallic silyl complex; these are inter-esting precursors for the coordination and activation of small unsaturated organic mol-ecules.The μ2-PPh2 ligand spans the iron and platinum atoms, which are connected via a metal-metal bond of 2.7738 (4) Å.In contrast to most other complexes of the [(OC)3Fe(SiR 3)(μ-PR 2)PtL 2] family, where the iron-bound SiR 3 group is trans-arranged with respect to the μ2-PPh2 ligand, the SiPh2Me ligand is roughly collinear with the Fe-Pt vector [Si-Fe-Pt = 169.07 (3)°].

View Article: PubMed Central - HTML - PubMed

Affiliation: Institut UTINAM UMR CNRS 6213, University of Franche-Comté, 16 route de Gray, Besançon 25030, France.

ABSTRACT
The title compound, [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2, represents an example of a phosphido-bridged heterobimetallic silyl complex; these are inter-esting precursors for the coordination and activation of small unsaturated organic mol-ecules. The μ2-PPh2 ligand spans the iron and platinum atoms, which are connected via a metal-metal bond of 2.7738 (4) Å. In contrast to most other complexes of the [(OC)3Fe(SiR 3)(μ-PR 2)PtL 2] family, where the iron-bound SiR 3 group is trans-arranged with respect to the μ2-PPh2 ligand, the SiPh2Me ligand is roughly collinear with the Fe-Pt vector [Si-Fe-Pt = 169.07 (3)°].

No MeSH data available.


The reaction scheme for the synthesis of (I).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4384561&req=5

fig1: The reaction scheme for the synthesis of (I).

Mentions: The bridging of metal–metal-bonded heterodinuclear complexes with μ2-PR2 phosphido bridges allows both the stabilization of the metal–metal bond and permits a fine-tuning of the reactivity of heterodinuclear systems by steric and electronic variation of the R substituents. In addition to the numerous examples of homodinuclear complexes, many μ-phosphido heterobimetallic complexes (with and without a metal–metal bond) are nowadays well documented and both their structural and reactivity features have been investigated (Stephan, 1989 ▸; He et al., 1992 ▸; Comte et al., 1997 ▸; Lavastre et al., 1997 ▸). These compounds are usually prepared by the reaction of anionic [LnMPR2]− salts with a transition metal–halide complex (Jenkins & Loeb, 1989 ▸) or by oxidative addition of the P—H bond of an [LnMPR2H] complex across a second low-valent metal atom (Powell et al., 1987 ▸). This latter route has been used to prepare the title complex [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2 (I) and related complexes by oxidative addition of [(OC)3Fe(H)(SiR3)(PPh2H)] across [Pt(CH2=CH2)(PPh3)2] (Fig. 1 ▸). These heterodinuclear systems display an inter­esting reactivity such as ligand-induced SiR3 migration from iron to platinum, which has been studied both experimentally (Braunstein et al., 1992 ▸) and theoretically (Messaoudi et al., 2007 ▸). Another reactivity pattern of these electron-rich [(OC)3Fe(SiR3)(μ2-PR2)Pt(PPh3)2] compounds is their conversion to hydride-bridged μ2-phospido-complexes by means of protonation with HBF4, with concomitant cleavage of the Fe—SiR3 bond (Knorr et al., 1994 ▸).


Crystal structure of tricarbon-yl(μ-di-phenyl-phosphido-κ(2) P:P)(methyl-diphenyl-silyl-κSi)bis(tri-phenyl-phosphane-κP)iron(II)platinum(0)(Fe-Pt).

Mohamed AS, Jourdain I, Knorr M, Rousselin Y, Kubicki MM - Acta Crystallogr E Crystallogr Commun (2015)

The reaction scheme for the synthesis of (I).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384561&req=5

fig1: The reaction scheme for the synthesis of (I).
Mentions: The bridging of metal–metal-bonded heterodinuclear complexes with μ2-PR2 phosphido bridges allows both the stabilization of the metal–metal bond and permits a fine-tuning of the reactivity of heterodinuclear systems by steric and electronic variation of the R substituents. In addition to the numerous examples of homodinuclear complexes, many μ-phosphido heterobimetallic complexes (with and without a metal–metal bond) are nowadays well documented and both their structural and reactivity features have been investigated (Stephan, 1989 ▸; He et al., 1992 ▸; Comte et al., 1997 ▸; Lavastre et al., 1997 ▸). These compounds are usually prepared by the reaction of anionic [LnMPR2]− salts with a transition metal–halide complex (Jenkins & Loeb, 1989 ▸) or by oxidative addition of the P—H bond of an [LnMPR2H] complex across a second low-valent metal atom (Powell et al., 1987 ▸). This latter route has been used to prepare the title complex [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2 (I) and related complexes by oxidative addition of [(OC)3Fe(H)(SiR3)(PPh2H)] across [Pt(CH2=CH2)(PPh3)2] (Fig. 1 ▸). These heterodinuclear systems display an inter­esting reactivity such as ligand-induced SiR3 migration from iron to platinum, which has been studied both experimentally (Braunstein et al., 1992 ▸) and theoretically (Messaoudi et al., 2007 ▸). Another reactivity pattern of these electron-rich [(OC)3Fe(SiR3)(μ2-PR2)Pt(PPh3)2] compounds is their conversion to hydride-bridged μ2-phospido-complexes by means of protonation with HBF4, with concomitant cleavage of the Fe—SiR3 bond (Knorr et al., 1994 ▸).

Bottom Line: The title compound, [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2, represents an example of a phosphido-bridged heterobimetallic silyl complex; these are inter-esting precursors for the coordination and activation of small unsaturated organic mol-ecules.The μ2-PPh2 ligand spans the iron and platinum atoms, which are connected via a metal-metal bond of 2.7738 (4) Å.In contrast to most other complexes of the [(OC)3Fe(SiR 3)(μ-PR 2)PtL 2] family, where the iron-bound SiR 3 group is trans-arranged with respect to the μ2-PPh2 ligand, the SiPh2Me ligand is roughly collinear with the Fe-Pt vector [Si-Fe-Pt = 169.07 (3)°].

View Article: PubMed Central - HTML - PubMed

Affiliation: Institut UTINAM UMR CNRS 6213, University of Franche-Comté, 16 route de Gray, Besançon 25030, France.

ABSTRACT
The title compound, [FePt(C12H10P)(C13H13Si)(C18H15P)2(CO)3]·0.5CH2Cl2, represents an example of a phosphido-bridged heterobimetallic silyl complex; these are inter-esting precursors for the coordination and activation of small unsaturated organic mol-ecules. The μ2-PPh2 ligand spans the iron and platinum atoms, which are connected via a metal-metal bond of 2.7738 (4) Å. In contrast to most other complexes of the [(OC)3Fe(SiR 3)(μ-PR 2)PtL 2] family, where the iron-bound SiR 3 group is trans-arranged with respect to the μ2-PPh2 ligand, the SiPh2Me ligand is roughly collinear with the Fe-Pt vector [Si-Fe-Pt = 169.07 (3)°].

No MeSH data available.