تفاعل #1337302

معادلة التفاعل

neodymium trichloride

potassium bis(trimethylsilyl)amide

→

Neodymium tris(bis(trimethylsilyl)amide)

المذيبات

THF

ظروف التفاعل

المعالجة

1. 1
   غسيلwashed with hexane
2. 2
   ترشيحfiltered
3. 3
   أخرىvacuum dried
4. 4
   أخرىfollowed by low-temperature crystallization from hexane
5. 5
   أخرىSolvents (hexane, diethyl ether, tetrahydrofuran, toluene) were degassed
6. 6
   workup.DISTILLATIONdistilled from sodium benzophenone ketyl under argon
7. 7
   workup.DISTILLATIONDimethyl sulfoxide was distilled from calcium hydride under argon
8. 8
   workup.DISTILLATIONBis(triiethylsilyl)ether was distilled from potassium under argon
9. 9
   أخرىBenzene-d6, THF-d8, and toluene-d8 were degassed
10. 10
    أخرىdried over Na—K alloy
11. 11
    workup.DISTILLATIONtrap-to-trap distilled before use

الإجراء التجريبي

Preparation of amine ligands was generally accomplished without exclusion of air and moisture, unless otherwise stated. All manipulations involving metal complexes were carried out under an inert atmosphere of oxygen-free UHP grade argon using standard Schlenk techniques, or under oxygen-free helium in a Vacuum Atmospheres glovebox. Chemicals were obtained from the following suppliers and used as received: Lancaster Synthesis—hexafluorobenzene, 3,5-bis(trifluoromethyl)aniline, pentafluoroaniline, 2,6-difluoroaniline, dichlorodiphenylsilane, dichlorodimethylsilane, paraformaldehyde, potassium hydroxide, 1-hexene, potassium carbonate; Aldrich—1.6 M n-butyllithium in hexane, triphenylsilane, chloroform; Strem—zirconium tetrachloride, neodymium trichloride, Fisher Scientific—methanol, ethanol, Albermarle—methylaluminoxane (30% solution in toluene); Fluka—lithium amide, 1,2-phenylene diamine, 1,8-diaminonaphthalene, 2,6-dimethylaniline, Acros—sodium sulfate, JT Baker—potassium hydroxide, NaH was obtained as a 60% dispersion in mineral oil, washed with hexane, filtered, and vacuum dried. Neodymium tris(bis(trimethylsilyl)amide) was prepared by reaction of anhydrous neodymium trichloride with three equivalents of potassium bis(trimethylsilyl)amide in refluxing THF for 24 hours, followed by low-temperature crystallization from hexane. Solvents (hexane, diethyl ether, tetrahydrofuran, toluene) were degassed and distilled from sodium benzophenone ketyl under argon. Dimethyl sulfoxide was distilled from calcium hydride under argon. Bis(triiethylsilyl)ether was distilled from potassium under argon. Benzene-d6, THF-d8, and toluene-d8 were degassed, dried over Na—K alloy, and then trap-to-trap distilled before use.

المصدر