Cluster fragmentation and facile cleavage of phenyl groups from the SnPh 3 ligand in reactions of Os 3(CO) 11(SnPh 3)(μ-H) with CO and HSnPh 3

Richard D. Adams, Burjor Captain, Lei Zhu

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Two new cluster complexes, Os 3(CO) 12(Ph)(μ 3-SnPh), 8 (35% yield), and Os 4(CO) 164-Sn), 9 (10% yield), were formed when the complex Os 3(CO) 11(SnPh 3)(μ-H), 6, was heated to reflux in toluene solvent under a CO atmosphere. Compound 8 was transformed to 9 in 28% yield when a solution in octane solvent was heated to reflux under a CO atmosphere. Biphenyl was a coproduct in this reaction. Compound 8 contains three osmium atoms with a triply bridging SnPh group. The triosmium cluster has opened and there is only one Os-Os bond between the three osmium atoms. Compound 9 contains two Os 2(CO) 8 groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the five metal atoms. Two other new compounds, Os 2(CO) 6(μ-SnPh 2) 2(SnPh 3) 2, 10, and HOs(CO) 4(SnPh 3), 11, were formed in 51% and 20% yields, respectively, from the reaction of 6 with HSnPh 3. Compound 10 contains only two osmium atoms linked by an Os-Os bond and two bridging SnPh 2 ligands. Each osmium atom also contains one terminal SnPh 3 ligand. Compound 11 contains only one osmium atom. It has one SnPh 3 ligartd and a hydrido ligand in cis position in the six-coordinate pseudo-octahedral complex. All four new compounds were characterized by single-crystal X-ray diffraction analysis.

Original languageEnglish
Pages (from-to)4183-4187
Number of pages5
JournalOrganometallics
Volume25
Issue number17
DOIs
StatePublished - Aug 14 2006
Externally publishedYes

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Osmium
cleavage
osmium
fragmentation
Ligands
Atoms
ligands
atoms
atmospheres
Tin
Toluene
octanes
bows
X ray diffraction analysis
toluene
tin
Metals
Single crystals
single crystals
diffraction

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry

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Cluster fragmentation and facile cleavage of phenyl groups from the SnPh 3 ligand in reactions of Os 3(CO) 11(SnPh 3)(μ-H) with CO and HSnPh 3 . / Adams, Richard D.; Captain, Burjor; Zhu, Lei.

In: Organometallics, Vol. 25, No. 17, 14.08.2006, p. 4183-4187.

Research output: Contribution to journalArticle

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abstract = "Two new cluster complexes, Os 3(CO) 12(Ph)(μ 3-SnPh), 8 (35{\%} yield), and Os 4(CO) 16(μ 4-Sn), 9 (10{\%} yield), were formed when the complex Os 3(CO) 11(SnPh 3)(μ-H), 6, was heated to reflux in toluene solvent under a CO atmosphere. Compound 8 was transformed to 9 in 28{\%} yield when a solution in octane solvent was heated to reflux under a CO atmosphere. Biphenyl was a coproduct in this reaction. Compound 8 contains three osmium atoms with a triply bridging SnPh group. The triosmium cluster has opened and there is only one Os-Os bond between the three osmium atoms. Compound 9 contains two Os 2(CO) 8 groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the five metal atoms. Two other new compounds, Os 2(CO) 6(μ-SnPh 2) 2(SnPh 3) 2, 10, and HOs(CO) 4(SnPh 3), 11, were formed in 51{\%} and 20{\%} yields, respectively, from the reaction of 6 with HSnPh 3. Compound 10 contains only two osmium atoms linked by an Os-Os bond and two bridging SnPh 2 ligands. Each osmium atom also contains one terminal SnPh 3 ligand. Compound 11 contains only one osmium atom. It has one SnPh 3 ligartd and a hydrido ligand in cis position in the six-coordinate pseudo-octahedral complex. All four new compounds were characterized by single-crystal X-ray diffraction analysis.",
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N2 - Two new cluster complexes, Os 3(CO) 12(Ph)(μ 3-SnPh), 8 (35% yield), and Os 4(CO) 16(μ 4-Sn), 9 (10% yield), were formed when the complex Os 3(CO) 11(SnPh 3)(μ-H), 6, was heated to reflux in toluene solvent under a CO atmosphere. Compound 8 was transformed to 9 in 28% yield when a solution in octane solvent was heated to reflux under a CO atmosphere. Biphenyl was a coproduct in this reaction. Compound 8 contains three osmium atoms with a triply bridging SnPh group. The triosmium cluster has opened and there is only one Os-Os bond between the three osmium atoms. Compound 9 contains two Os 2(CO) 8 groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the five metal atoms. Two other new compounds, Os 2(CO) 6(μ-SnPh 2) 2(SnPh 3) 2, 10, and HOs(CO) 4(SnPh 3), 11, were formed in 51% and 20% yields, respectively, from the reaction of 6 with HSnPh 3. Compound 10 contains only two osmium atoms linked by an Os-Os bond and two bridging SnPh 2 ligands. Each osmium atom also contains one terminal SnPh 3 ligand. Compound 11 contains only one osmium atom. It has one SnPh 3 ligartd and a hydrido ligand in cis position in the six-coordinate pseudo-octahedral complex. All four new compounds were characterized by single-crystal X-ray diffraction analysis.

AB - Two new cluster complexes, Os 3(CO) 12(Ph)(μ 3-SnPh), 8 (35% yield), and Os 4(CO) 16(μ 4-Sn), 9 (10% yield), were formed when the complex Os 3(CO) 11(SnPh 3)(μ-H), 6, was heated to reflux in toluene solvent under a CO atmosphere. Compound 8 was transformed to 9 in 28% yield when a solution in octane solvent was heated to reflux under a CO atmosphere. Biphenyl was a coproduct in this reaction. Compound 8 contains three osmium atoms with a triply bridging SnPh group. The triosmium cluster has opened and there is only one Os-Os bond between the three osmium atoms. Compound 9 contains two Os 2(CO) 8 groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the five metal atoms. Two other new compounds, Os 2(CO) 6(μ-SnPh 2) 2(SnPh 3) 2, 10, and HOs(CO) 4(SnPh 3), 11, were formed in 51% and 20% yields, respectively, from the reaction of 6 with HSnPh 3. Compound 10 contains only two osmium atoms linked by an Os-Os bond and two bridging SnPh 2 ligands. Each osmium atom also contains one terminal SnPh 3 ligand. Compound 11 contains only one osmium atom. It has one SnPh 3 ligartd and a hydrido ligand in cis position in the six-coordinate pseudo-octahedral complex. All four new compounds were characterized by single-crystal X-ray diffraction analysis.

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