99016-91-8

Upstream product

• 657-84-1 sodium tosylate 
• 21050-13-5 bis(triphenylphosphine)iminium chloride 
• 16836-95-6 silver(I) 4-methylbenzenesulfonate 

Downstream Products

• 99016-84-9 [PPN][cis-W(CO)4(P(OMe)3)Ph] 
• 99016-82-7 [PPN][cis-W(CO)4(P(OMe)3)Et] 
• 14040-11-0 tungsten hexacarbonyl 
• 16104-05-5 cis-W(CO)4(PMe₃)2 
• 99016-87-2 ((C₆H₅)3P)2N⁽¹⁺⁾*W(CO)5COCH₃^(1-)=(((C₆H₅)3P)2N)W(CO)5COCH₃ 
• 62197-75-5 ((C₆H₅)3P)2N⁽¹⁺⁾*W(CO)5C₂H₅^(1-)=(((C₆H₅)3P)2N)W(CO)5C₂H₅ 
• 99016-80-5 [PPN][cis-W(CO)4(PMe₃)Et] 
• 99016-88-3 ((C₆H₅)3P)2N⁽¹⁺⁾*W(CO)5COC₂H₅^(1-)=(((C₆H₅)3P)2N)W(CO)5COC₂H₅ 
• 36515-93-2 ((C₆H₅)3P)2N⁽¹⁺⁾*W(CO)5OCOC₂H₅^(1-)=(((C₆H₅)3P)2N)W(CO)5OCOC₂H₅ 
• 90388-52-6 cis-[PPN]CH₃W(CO)4P(CH₃)3^(1-) 
• 99016-78-1 [PPN][cis-W(CO)4(P(OMe)3)CH₃] 

Relevant academic research and scientific papers

Quantitative in situ measurement of ion transport in polypyrrole/poly(styrenesulfonate) films using rotating ring-disk voltammetry

An approach based on rotating ring-disk electrode (RRDE) voltammetry is described for the quantitative, in situ measurement of ion transport between solution and conducting polymer films. The specific composite film studied in this report is polypyrrole/poly(styrenesulfonate) (pPy+/pSS-). Cation flux in and out of the polymer was obtained from the mass-transport-limited reduction current for the dopant cation(s) measured at the ring during redox cycling of the polymer. Crucial to this method is the use of a supporting electrolyte that is sterically inhibited from passing into the film and the use of dopant ions that adhere to specific electrochemical constraints. With this method it was possible to quantitatively account for all changes in charge compensation in the film by the specific cation(s) involved. Three different cations were explored alone and in paired combinations. Solutions containing mixtures of dopant cations were studied to determine whether the pPy+/pSS- films exhibit preferential doping. Kinetic factors, likely due to steric differences in the dopant cations, were found to lead to significant preferential doping of the polymer.

[Cl@Si20H20]-: Parent Siladodecahedrane with Endohedral Chloride Ion

Fullerenes and diamondoids are at the core of nanoscience. Comparable monodisperse silicon analogues are scarce. Herein, we report the synthesis of the parent siladodecahedrane, which represents the largest Platonic solid. It shares its pattern of pentagonal faces with the smallest fullerene, C20, and its saturated, H-terminated skeleton with diamondoids. Similar to endofullerenes, the silicon cage encapsulates a chloride ion ([Cl@Si20H20]-); similar to diamondoids, its Si-H termini offer a wealth of opportunities for further functionalization. Mere treatment with chloromethanes leads to the perchlorinated cluster [Cl@Si20Cl20]-. Both compounds were characterized by mass spectrometry, X-ray crystallography, NMR spectroscopy, and quantum-chemical calculations. The experimentally determined 35Cl resonances of the endohedral chloride ions are particularly diagnostic to probe the Cl- → Si20 interaction strength as a function of the different surface substituents, as we have proven by high-level computational analyses.