10.1021/ic9510977.s001
Stephen D. Orth
Stephen D.
Orth
Michael R. Terry
Michael R.
Terry
Khalil A. Abboud
Khalil A.
Abboud
Brian Dodson
Brian
Dodson
Lisa McElwee-White
Lisa
McElwee-White
Synthesis and Electrochemistry of Heterobimetallic Ruthenium/Platinum and Molybdenum/Platinum Complexes
American Chemical Society
1996
dppm
coordination mode
chloride abstraction
RuCp
bimetallic species
show electrochemical behavior
PF 6
CO
heterobimetallic complexes
cationic heterobimetallic complexes
exhibit electrochemistry
1996-02-14 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Synthesis_and_Electrochemistry_of_Heterobimetallic_Ruthenium_Platinum_and_Molybdenum_Platinum_Complexes/3614391
As starting materials for heterobimetallic complexes,
[RuCp(PPh<sub>3</sub>)CO(PPh<sub>2</sub>H)]PF<sub>6</sub>
and
[RuCp(PPh<sub>3</sub>)CO(η<sup>1</sup>-dppm)]PF<sub>6</sub> were prepared from
RuCp(PPh<sub>3</sub>)(CO)Cl. In the course of
preparing
[RuCp(η<sup>2</sup>-dppm)(η<sup>1</sup>-dppm)]Cl
from
RuCp(Ph<sub>3</sub>P)(η<sup>1</sup>-dppm)Cl, the new
monomer RuCpCl(η<sup>1</sup>-dppm)<sub>2</sub> was isolated.
The uncommon coordination mode
of the two monodentate bis(phosphines) was confirmed by X-ray
crystallography [<i>a</i> = 11.490(1) Å, <i>b</i> =
14.869(2) Å, <i>c</i> = 15.447(2) Å, α = 84.63(1)°,
β = 70.55(1)°, γ = 72.92(1)°, <i>V</i> =
2378.7(5) Å<sup>3</sup>, <i>d</i><sub>calc</sub> = 1.355
g cm<sup>-3</sup>
(298 K), triclinic, <i>P</i>1̄, <i>Z</i> = 2]. The
dppm-bridged bimetallic complexes
RuCp(PPh<sub>3</sub>)Cl(μ-dppm)PtCl<sub>2</sub>,
RuCpCl(μ-dppm)<sub>2</sub>PtCl<sub>2</sub>, and
[RuCp(PPh<sub>3</sub>)CO(μ-dppm)PtCl<sub>2</sub>]PF<sub>6</sub>
each exhibit electrochemistry consistent with varying
degrees
of metal−metal interaction. The cationic heterobimetallic
complexes
[Mo(CO)<sub>3</sub>(μ-dppm)<sub>2</sub>Pt(H)]PF<sub>6</sub>
and [MoCp(CO)<sub>2</sub>(μ-PPh<sub>2</sub>)(μ-H)Pt(PPh<sub>3</sub>)(MeCN)]PF<sub>6</sub>
were prepared by chloride abstraction from the corresponding
neutral
bimetallic species and show electrochemical behavior similar to the
analogous Ru/Pt complexes.