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Heterolysis of Dihydrogen by Silver Alkoxides and Fluorides.

Heterolysis of Dihydrogen by Silver Alkoxides and Fluorides.

Chemistry (Weinheim an der Bergstrasse, Germany) (2015-06-11)

Brandon K Tate, Jenna T Nguyen, John Bacsa, Joseph P Sadighi

ZUSAMMENFASSUNG

Alkoxide-bridged disilver cations react with dihydrogen to form hydride-bridged cations, releasing free alcohol. Hydrogenolysis of neutral silver fluorides affords hydride-bridged disilver cations as their bifluoride salts. These reactions proceed most efficiently when the supporting ligands are expanded N-heterocyclic carbenes (NHCs) derived from 6- and 7-membered cyclic amidinium salts. Kinetics studies show that silver fluoride hydrogenolysis is first-order in both silver and dihydrogen.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

Sigma-Aldrich

Deuteriumoxid, 99.9 atom % D

Sigma-Aldrich

Acetonitril, anhydrous, 99.8%

Sigma-Aldrich

Tetrahydrofuran, anhydrous, ≥99.9%, inhibitor-free

Sigma-Aldrich

Dichlormethan, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer

Sigma-Aldrich

Toluol, anhydrous, 99.8%

Sigma-Aldrich

Tetrahydrofuran, anhydrous, contains 250 ppm BHT as inhibitor, ≥99.9%

Sigma-Aldrich

Deuteriumoxid, 99.9 atom % D, contains 0.05 wt. % 3-(trimethylsilyl)propionic-2,2,3,3-d₄ acid, sodium salt

Sigma-Aldrich

Lithiumaluminiumhydrid, powder, reagent grade, 95%

Sigma-Aldrich

Benzol, anhydrous, 99.8%

Sigma-Aldrich

Deuteriumoxid, 99.9 atom % D, contains 0.75 wt. % 3-(trimethylsilyl)propionic-2,2,3,3-d₄ acid, sodium salt

Sigma-Aldrich

1,4-Dimethoxybenzol, ReagentPlus^®, 99%

Sigma-Aldrich

Deuterium, 99.8 atom % D

Sigma-Aldrich

Pentan, anhydrous, ≥99%

Sigma-Aldrich

Deuteriumoxid, filtered, 99.8 atom % D

Sigma-Aldrich

Lithiumaluminiumhydrid, pellets, reagent grade, 95%

Sigma-Aldrich

Natrium-tert-pentoxid, 95%

Sigma-Aldrich

Argon, ≥99.998%

Sigma-Aldrich

Deuteriumoxid, 99.9 atom % D, contains 1 % (w/w) 3-(trimethylsilyl)-1-propanesulfonic acid, sodium salt (DSS)

Sigma-Aldrich

Deuterium, 99.96 atom % D

Sigma-Aldrich

1,4-Dimethoxybenzol, 99%, FG

Sigma-Aldrich

Deuterium, 99.9 atom % D

Sigma-Aldrich

Acetonitril, electronic grade, 99.999% trace metals basis

Sigma-Aldrich

Calciumhydrid, reagent grade, 95% (gas-volumetric)

Sigma-Aldrich

Natrium-tert-Pentoxid -Lösung, 40% in toluene

Supelco

Tetrahydrofuran, HPLC grade, ≥99.9%, inhibitor-free

Sigma-Aldrich

Calciumhydrid, powder, 0-2 mm, reagent grade, ≥90% (gas-volumetric)

Sigma-Aldrich

Dichlormethan, suitable for HPLC, ≥99.9%, contains 40-150 ppm amylene as stabilizer

Sigma-Aldrich

4,5-Dihydroxy-anthrachinon-2-carbonsäure, technical grade

Sigma-Aldrich

Calciumhydrid, 99.9% trace metals basis

Sigma-Aldrich

Deuteriumoxid, 70 atom % D