Group 9 half-sandwich complexes containing the unique P,P′-diphenyl-1,4-diphospha-cyclohexane ligand: Synthesis, X-ray structure analyses and spectroscopic studies |
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Authors: | Joshua E. Sussman Tara S. Morey Susie M. Miller Monte L. Helm |
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Affiliation: | aChemistry Department, Fort Lewis College, 1000 Rim Drive, Durango, CO 81301, USA;bDepartment of Chemistry, Colorado State University, Fort Collins, CO 80523, USA |
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Abstract: | We wish to report the synthesis and characterization of Group 9 metal complexes with the novel P,P′-diphenyl-1,4-diphospha-cyclohexane (dpdpc) ligand. The complexes are readily prepared by direct ligand substitution reactions from the dichloro-bridged binuclear complexes, [{η5-Cp*M(Cl)2}2]. The complexes include: [η5-Cp*Rh(Cl)2]2(μ-dpdpc) (1), [η5-Cp*Ir(Cl)2]2(μ-dpdpc) (2), and [η5-Cp*Rh(Cl)(dpdpc)]PF6 (3). The structures for all three complexes are supported by 1H, 13C{1H}, and 31P{1H} NMR spectroscopy as well as elemental analysis. The molecular structures of 1 and 3 have also been established by single-crystal X-ray analysis. |
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Keywords: | P,P′ -diphenyl-1,4-diphospha-cyclohexane Rhodium complexes Iridium complexes Mixed sandwich complexes Phosphine ligands Pentamethylcyclopentadienide complexes |
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