Micromass quattro 2 spectrometer

Reactions and manipulations were performed using standard Schlenk techniques or in a nitrogen atmosphere glovebox. HPLC-grade solvents were dried by filtration through activated alumina or distilled under nitrogen over an appropriate drying agent and then used. ESI-MS data for compounds were acquired using a Waters Micromass Quattro II spectrometer. ¹H NMR (500 MHz) and ²H NMR (600 MHz) spectra were referenced to residual solvent relative to TMS. ³¹P{¹H} NMR (202 and 242 MHz) spectra were referenced to external 85% H₃PO₄. Chemical shifts are reported for room temperature in the δ scale. FT-IR spectra were recorded on a PerkinElmer 100 FT-IR spectrometer. Crystallographic data for compounds [1]⁰ and [1]BF₄ were collected using a Siemens SMART diffractometer equipped with a Mo Kα source (λ = 0.71073 Å). cis-1,2-Bis(diphenylphosphino)ethylene (dppv) and HBF₄·Et₂O solution were purchased from Aldrich. The compounds Me₂pdtH₂,⁵⁶ Fe₂(Me₂pdt)(CO)₆, and Fe₂(Me₂pdt)(CO)₄(dppv) were prepared according to literature procedures.^{20 (link),29}