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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)°].

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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 mol­ecular structure of the title compound (I), with displacement ellipsoids shown at the 50% probabily level. H atoms have been omitted for clarity.
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fig2: The mol­ecular structure of the title compound (I), with displacement ellipsoids shown at the 50% probabily level. H atoms have been omitted for clarity.

Mentions: Compound (I) crystallized from CH2Cl2/heptane as a di­chloro­methane solvate in the triclinic space group P. The mol­ecular structure of the organometallic mol­ecule is depicted in Fig. 2 ▸. The iron and platinum atoms are linked by a phosphide bridge and a formal metal–metal bond, whose Fe—Pt separation of 2.7738 (4) Å is somewhat longer, probably because of steric hindrance between the Ph groups of the PPh3 and PPh2 ligands, than those reported for [(OC)3Fe(SiPh3)(μ-PPh2)Pt(PMe3)2] [Fe—Pt = 2.701 (2) Å; Knorr et al., 1994 ▸], [(OC)3Fe(SiPh3)(μ-PPh2)Pt{Ph2C(=CH2)PPh2}] [Fe—Pt = 2.659 (2) Å; Knorr et al., 1994 ▸], [(OC)3Fe(SiPh3)(μ-PPh2)Pt(C N-Xyl­yl)(PPh3)] [Fe—Pt = 2.631 (1) Å; Braunstein et al., 2000 ▸] and [(OC)3Fe(SiPh3)(μ-PPh2)Pt(CO)(PPh3)] [Fe—Pt = 2.620 (2) Å; Reinhard et al., 1993 ▸]. The Fe—Si bond length of 2.3497 (9) Å is quite comparable with the Fe—Si bond lengths in the latter four compounds, which range from 2.330 (1) to 2.356 (3) Å. However, a striking difference concerns the relative position of the SiR3 substituent with respect to the bridging PPh2 group. Whereas in all four SiPh3-bearing complexes the silyl group is in a trans-position with respect to the PPh2 bridge, the SiPh2Me ligand of (I) is roughly colinear with the Fe–Pt vector, the Si—Fe—Pt angle being 169.07 (3)°. The P—Fe—Si angle in (I) amounts to 119.32 (3)°, whilst that of [(OC)3Fe(SiPh3)(μ-PPh2)Pt(C N-Xyl­yl)(PPh3)] [175.1 (1)°; Braunstein et al., 2000 ▸] is close to a theoretical linear trans-arrangement.


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 mol­ecular structure of the title compound (I), with displacement ellipsoids shown at the 50% probabily level. H atoms have been omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig2: The mol­ecular structure of the title compound (I), with displacement ellipsoids shown at the 50% probabily level. H atoms have been omitted for clarity.
Mentions: Compound (I) crystallized from CH2Cl2/heptane as a di­chloro­methane solvate in the triclinic space group P. The mol­ecular structure of the organometallic mol­ecule is depicted in Fig. 2 ▸. The iron and platinum atoms are linked by a phosphide bridge and a formal metal–metal bond, whose Fe—Pt separation of 2.7738 (4) Å is somewhat longer, probably because of steric hindrance between the Ph groups of the PPh3 and PPh2 ligands, than those reported for [(OC)3Fe(SiPh3)(μ-PPh2)Pt(PMe3)2] [Fe—Pt = 2.701 (2) Å; Knorr et al., 1994 ▸], [(OC)3Fe(SiPh3)(μ-PPh2)Pt{Ph2C(=CH2)PPh2}] [Fe—Pt = 2.659 (2) Å; Knorr et al., 1994 ▸], [(OC)3Fe(SiPh3)(μ-PPh2)Pt(C N-Xyl­yl)(PPh3)] [Fe—Pt = 2.631 (1) Å; Braunstein et al., 2000 ▸] and [(OC)3Fe(SiPh3)(μ-PPh2)Pt(CO)(PPh3)] [Fe—Pt = 2.620 (2) Å; Reinhard et al., 1993 ▸]. The Fe—Si bond length of 2.3497 (9) Å is quite comparable with the Fe—Si bond lengths in the latter four compounds, which range from 2.330 (1) to 2.356 (3) Å. However, a striking difference concerns the relative position of the SiR3 substituent with respect to the bridging PPh2 group. Whereas in all four SiPh3-bearing complexes the silyl group is in a trans-position with respect to the PPh2 bridge, the SiPh2Me ligand of (I) is roughly colinear with the Fe–Pt vector, the Si—Fe—Pt angle being 169.07 (3)°. The P—Fe—Si angle in (I) amounts to 119.32 (3)°, whilst that of [(OC)3Fe(SiPh3)(μ-PPh2)Pt(C N-Xyl­yl)(PPh3)] [175.1 (1)°; Braunstein et al., 2000 ▸] is close to a theoretical linear trans-arrangement.

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.