Iron and Ruthenium Fragment Substituted Disilanes C5R5(OC)2M–Si2X5 (R = H, Me; M = Fe, Ru; × = Cl, H): Synthesis, Structural and Raman Spectroscopic Characterisation, DFT Calculation

The trialkylgallanes GaRЈЈ 3 [RЈ = Me, iPr (2a and 2b)] react with the ferrio-silanols Cp(OC) 2 Fe−Si(R)(RЈ)OH [R = RЈ = Me, iPr, Ph (1a−c), R = Me, RЈ = Ph (1d)] by alkane elimination to yield the iron-substituted siloxy-gallanes [Cp(OC) 2 Fe−Si-(R)(RЈ)OGaRЈЈ 2 ] 2 (3a−e). According to molecular mass determination in benzene (3a, 3b, 3d), X-ray analyses (3a, 3d) and NMR spectroscopy (3e), the novel hetero-siloxanes exist as

show abstract

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)₂Fe−SiR₂OGaR′₂]₂(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)₂Fe−SiR₂OGaMe₂]₂(R = Me, Ph)

Malisch

Schumacher

Schmiedeskamp

et al. 2003

Eur J Inorg Chem

Self Cite

View full text Add to dashboard Cite

show abstract

Broadening the Scope of Ancillary Phosphane‐Type Ligands: A Systematic Comparison of PR₃, PR₂BH₃^–, and SiR₃^– and Their Chalcogen Derivatives

et al. 2007

View full text Add to dashboard Cite

This work describes a systematic experimental and theoretical study of the properties of two series of isoelectronic and largely isosteric ligands, namely PPh2Me, PPh2BH3–, and SiPh2Me– and SPtBu3, SPtBu2BH3–, and SSitBu3–. In addition, we have also investigated the oxo derivatives OPPh2BH3– and OSiPh2Me–. Based on X‐ray crystal structure determinations (Fe–CO and C–O bond lengths) as well as NMR [e.g. δ(13CO)] and IR [ν(CO)] spectroscopic investigations of the corresponding [CpFe(CO)2]+ complexes, we can conclude that, with respect to electron donor strength, phosphanyl borohydrides occupy an intermediate position between phosphanes (weakest donors) and silyl ligands (strongest donors). The same is true for the thio derivatives, although the differences are smaller. In the reaction with [CpFe(CO)2]+, the oxo derivative OPPh2BH3– transfers a hydride ion rather than forming a stable [CpFe(CO)2(OPPh2BH3)] complex. The tendency to undergo hydride‐transfer reactions was studied by density functional calculations for the series PtBu2BH3–, OPtBu2BH3–, and SPtBu2BH3–. The results reveal that OPtBu2BH3– is the strongest and SPtBu2BH3– the weakest hydride donor, in accordance with the experimental observations. Theoretical analysis indicates that the three derivatives PPh2Me, PPh2BH3–, and SiPh2Me– are truly isolobal species despite variations in their charge distributions. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

show abstract

Wolfgang Kiefer

2006

J Raman Spectroscopy

View full text Add to dashboard Cite

Iron and Ruthenium Fragment Substituted Disilanes C5R5(OC)2M–Si2X5 (R = H, Me; M = Fe, Ru; × = Cl, H): Synthesis, Structural and Raman Spectroscopic Characterisation, DFT Calculation

Cited by 19 publications

References 51 publications

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)₂Fe−SiR₂OGaR′₂]₂(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)₂Fe−SiR₂OGaMe₂]₂(R = Me, Ph)

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)₂Fe−SiR₂OGaR′₂]₂(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)₂Fe−SiR₂OGaMe₂]₂(R = Me, Ph)

Broadening the Scope of Ancillary Phosphane‐Type Ligands: A Systematic Comparison of PR₃, PR₂BH₃^–, and SiR₃^– and Their Chalcogen Derivatives

Wolfgang Kiefer

Contact Info

Product

Resources

About

Iron and Ruthenium Fragment Substituted Disilanes C5R5(OC)2M–Si2X5 (R = H, Me; M = Fe, Ru; × = Cl, H): Synthesis, Structural and Raman Spectroscopic Characterisation, DFT Calculation

Cited by 19 publications

References 51 publications

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)2Fe−SiR2OGaR′2]2(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)2Fe−SiR2OGaMe2]2(R = Me, Ph)

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)2Fe−SiR2OGaR′2]2(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)2Fe−SiR2OGaMe2]2(R = Me, Ph)

Broadening the Scope of Ancillary Phosphane‐Type Ligands: A Systematic Comparison of PR3, PR2BH3–, and SiR3– and Their Chalcogen Derivatives

Wolfgang Kiefer

Contact Info

Product

Resources

About

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)₂Fe−SiR₂OGaR′₂]₂(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)₂Fe−SiR₂OGaMe₂]₂(R = Me, Ph)

Iron‐Fragment‐Substituted Heterosiloxanes of Gallium [Cp(OC)₂Fe−SiR₂OGaR′₂]₂(R, R′ = Alkyl, Aryl) − Structures of [Cp(OC)₂Fe−SiR₂OGaMe₂]₂(R = Me, Ph)

Broadening the Scope of Ancillary Phosphane‐Type Ligands: A Systematic Comparison of PR₃, PR₂BH₃^–, and SiR₃^– and Their Chalcogen Derivatives