Claus catalysis. 1. Adsorption of sulfur dioxide on the alumina catalyst studied by FTIR and EPR spectroscopy

Arunabha Datta; Ronald G. Cavell; Robert W. Tower; Zacheria M. George

doi:10.1021/j100249a014

Eightfold Electrophilic Methylation of Octacyanotungstate [W(CN)8]4−/3−: Preparation of Homoleptic, Eight-coordinate Methylisocyanide Complexes [W(CNMe)8]4+/5+

10.26434/chemrxiv.13643417 ◽

2021 ◽

Author(s):

Malte Sellin ◽

Susanne Margot Rupf ◽

Ulrich Abram ◽

Moritz Malischewski

Keyword(s):

Sulfur Dioxide ◽

Single Crystal ◽

Epr Spectroscopy ◽

X Ray Diffraction ◽

Liquid Sulfur ◽

Methyl Fluoride ◽

X Ray ◽

First Time ◽

Ir And Raman ◽

Methyl Triflate

Homoleptic eight-fold coordinated methylisocyanide complexes of W(IV) and W(V) have been prepared for the first time. The reaction of [NBu4]4[W(CN)8] with methyl triflate MeOTf gives [W(CNMe)8][OTf]4. The even stronger methylating mixture of methyl fluoride MeF and arsenic pentafluoride AsF5 in liquid sulfur dioxide SO2 is able to fully alkylate both [NBu4]4[W(CN)8] and [NBu4]3[W(CN)8]. The paramagnetic octakis(methylisocyanide)- tungsten(V) [W(CNMe)8][AsF6]5 is thermally highly unstable above −30 °C. All compounds have been characterized via single-crystal X-ray diffraction, IR and Raman, as well as NMR or EPR spectroscopy<br>

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Eightfold Electrophilic Methylation of Octacyanotungstate [W(CN)8]4−/3−: Preparation of Homoleptic, Eight-coordinate Methylisocyanide Complexes [W(CNMe)8]4+/5+

10.26434/chemrxiv.13643417.v1 ◽

2021 ◽

Author(s):

Malte Sellin ◽

Susanne Margot Rupf ◽

Ulrich Abram ◽

Moritz Malischewski

Keyword(s):

Sulfur Dioxide ◽

Single Crystal ◽

Epr Spectroscopy ◽

X Ray Diffraction ◽

Liquid Sulfur ◽

Methyl Fluoride ◽

X Ray ◽

First Time ◽

Ir And Raman ◽

Methyl Triflate

Homoleptic eight-fold coordinated methylisocyanide complexes of W(IV) and W(V) have been prepared for the first time. The reaction of [NBu4]4[W(CN)8] with methyl triflate MeOTf gives [W(CNMe)8][OTf]4. The even stronger methylating mixture of methyl fluoride MeF and arsenic pentafluoride AsF5 in liquid sulfur dioxide SO2 is able to fully alkylate both [NBu4]4[W(CN)8] and [NBu4]3[W(CN)8]. The paramagnetic octakis(methylisocyanide)- tungsten(V) [W(CNMe)8][AsF6]5 is thermally highly unstable above −30 °C. All compounds have been characterized via single-crystal X-ray diffraction, IR and Raman, as well as NMR or EPR spectroscopy<br>

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