The 31P NMR spectrum of (n-C3H7)4NP4S9N exhibits two triplets of equal intensity, one broader than the other. A structure based on the established P4S10 adamantane-like cage is consistent with the NMR data, which show two sets of phosphorus atom environments. The broader 31P triplet may...
The HPLC grade tetrahydrofuran (THF) was used as eluent at the flow rate of 0.5 mL/min at room temper- ature. 1H NMR spectra was utilized to determine the copolymer composition of all the polymer sam- ples withdrawn at different conversions for each in- feed molar ratio. All the NMR ...
A reaction between 6-methylfulvene and lithium diisopropylamide in THF solution produces vinylcyclopentadienyllithium in yields of 85–95%. The 1H NMR spectrum of this air-sensitive organlithium reagent has been recorded in THF-d8. Reactions of vinylcyclopentadienyllithium with Group VIB metal hexacar...
13C NMR(100 MHz,CDCl3)δ124.9、130.4、131.7、133.0、133.7、136.7、190.0。合成路线如图2所示。 图3 2-氯-6-溴苯甲醛的合成路线[4]。 向500mL圆底烧瓶中加入1-溴-3-氯苯(26.5g,139mmol)、2-甲基四氢呋喃(Me-THF,100mL)和无水氯化镁(15.0g,153mmol)。将混合物在室温下搅拌20小时,然后使用干冰/丙酮...
烯丙基溴化镁, 1.0 M SOLUTION IN THF, SPCSEAL烯丙基溴化镁, 1.0 M 2-甲基四氢呋喃溶液, J&KSEAL瓶烯丙基溴化镁 1.0 M SOLUTION IN 2-ME-THF烯丙基溴化镁 1.6 M 乙醚烯丙基溴化镁 THF溶液的烯丙基溴化镁 1M THF烯丙基溴化镁 1.0M乙醚烯丙基溴化镁 1M 乙醚 英文别名 Bromo(2-propenyl)magnesiu...
The molecular structures of (NMe4)4x[HxNi12(CO)21] · S (x=1, S=Me2CO; x=2, S=2THF) are reported. Both anions are similar and consist of a central Ni6(CO)3(μ-CO)6-layer flanked on both sides by two Ni3(CO)3(μ-CO)3-layers such that the Ni12-fragment is h...
Low-temperature NMR measurements within the range 45 to 10°C have provided spectroscopic evidence of the formation and sequential participation of two η2-iminoacyl intermediates, and , in the reductive coupling of two equivalents of CNMe by Cp*2ZH2), where Cp* = C5Me5. The resultant prod...
By means of 39 K NMR spectroscopy the presence of potassium anions and complexed potassium cations in blue potassium solutions in THF containing cryptand[2.2.2] was evidenced. Spin-lattice and spin-spin relaxation was studied in the temperature range 178–238 K. The comparison of relaxation behavi...
To our delight, the allylation product 3aa was generated in 64% assay yield (AY, as determined by 1H NMR integration against an internal standard Table 1, entry 1). We previously discovered that solvent can play an important role in modulating reactivity of 2-azaallyl anions by coordination ...
Detailed NMR studies have indicated that this acceleration is due to the formation of the intermediate (1-Me-indenyl)Ni(Me)(Me2PCH2AlMe2), 4. Coordination of the PMe2 moiety in this complex to the Ni center allows the tethered AlMe2 moiety to interact with the Ni−Me moiety in such ...