As new media proliferate and the public's trust and engagement in science are influenced by industry involvement in academic research, an interdisciplinary workshop provides some recommendations to enhance science communication.
Treatment of Cr(NO)(N i Pr 2 ) 3 with 2 equiv of PhCO 2 H affords Cr(NO)(N i Pr 2 )(O 2 CPh) 2 (1) in good yields. Reaction of CpNa‚DME with 1 produces CpCr(NO)(N i Pr 2 )(OC(O)Ph) (2), which subsequently yields a series of 18-valence-electron (18e) complexes, CpCr(NO)(N i Pr 2 )(R) (R ) η 1 -Cp (3), CH 2 SiMe 3 (4), η 1 -CH 2 Ph (5), Ph (6), CPhdCH 2 (7), CtCCMe 3 (8), CtCPh ( 9)) when treated with additional CpNa‚DME or 1 equiv of the appropriate R 2 Mg‚x(dioxane) reagent. 2-9 are low-spin (S ) 0) compounds, and their electronic stability is attributed to the strong, synergic π-bonding interactions present in the [Cr(NO)(N i Pr 2 )] 2+ core, as indicated both by the NMR and IR spectra of these complexes and by the solid-state molecular structures of 2-4. The "strong-field" nitrosyl and amide ligands also enforce a diamagnetic configuration on the 14e bis(hydrocarbyl) complexes Cr(NO)(N i Pr 2 )R 2 (R ) CH 2 SiMe 3 (10), CH 2 Ph (11), o-tolyl (12)), which are obtained in good yields by reaction of 1 with 2 equiv of the corresponding R 2 Mg‚x(dioxane) reactants. The solid-state molecular structures of 10 and 11 have also been established by single-crystal X-ray crystallographic analyses. Variabletemperature NMR spectroscopy was employed to study the fluxional processes occurring in 1, 10, and 11.
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