Skip to Content
Merck

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
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Supelco
Dichloromethane solution, contains 10 % (v/v) methanol
Sigma-Aldrich
Acetonitrile, HPLC Plus, ≥99.9%, poly-coated bottles
Sigma-Aldrich
Benzene, JIS 300, ≥99.5%, for residue analysis
Sigma-Aldrich
Acetonitrile, ≥99.8%, for residue analysis, JIS 300
Sigma-Aldrich
Toluene, JIS 1000, for residue analysis, ≥99.8%
Sigma-Aldrich
Acetonitrile, ≥99.8%, for residue analysis, JIS 1000
Sigma-Aldrich
Toluene, JIS special grade, ≥99.5%
Sigma-Aldrich
Toluene, JIS 300, for residue analysis, ≥99.8%
Sigma-Aldrich
Benzene, SAJ first grade, ≥99.0%
Sigma-Aldrich
Acetonitrile, ≥99.8%, suitable for HPLC
Sigma-Aldrich
Acetonitrile, JIS special grade, ≥99.5%
Sigma-Aldrich
Pentane, SAJ first grade, ≥96.0%
Sigma-Aldrich
Dichloromethane, SAJ first grade, ≥99.0%
Sigma-Aldrich
Toluene, SAJ first grade, ≥99.0%
Sigma-Aldrich
Dichloromethane, JIS special grade, ≥99.0%
Sigma-Aldrich
Acetonitrile, for residue analysis, JIS 5000
Supelco
Acetonitrile, HPLC grade, ≥99.93%
Sigma-Aldrich
Calcium hydride, 99.9% trace metals basis
Sigma-Aldrich
Deuterium oxide, filtered, 99.8 atom % D
Sigma-Aldrich
Acetonitrile, electronic grade, 99.999% trace metals basis
Sigma-Aldrich
Deuterium, 99.9 atom % D
Sigma-Aldrich
Deuterium, 99.96 atom % D
Supelco
Toluene, HPLC grade, 99.8%
Sigma-Aldrich
Deuterium, 99.8 atom % D
Sigma-Aldrich
Dichloromethane, suitable for HPLC, ≥99.9%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Sodium tert-pentoxide, 95%
Sigma-Aldrich
Dichloromethane, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Calcium hydride, powder, 0-2 mm, reagent grade, ≥90% (gas-volumetric)
Sigma-Aldrich
Deuterium oxide, 99.9 atom % D, contains 0.75 wt. % 3-(trimethylsilyl)propionic-2,2,3,3-d4 acid, sodium salt
Sigma-Aldrich
Toluene, anhydrous, 99.8%