• Alkenes as Lewis bases • Oxymercuration-demercuration2• Mercuric salts (HgX2) are Lewis acids that react readily with alkenes, and experiments show that the reaction proceeds by formation of a carbocation intermediate. • When mercuric acetate [Hg(OAc)2; see the structure and ...
3,someofthemoleculesandionsinthecenteroftheatomalsomeetthe8electronstructure,butthevalenceelectronrearrangementallowsformoreelectronpairs.Again,theCO2canaccepttheloneelectronpairintheOatomoftheOH-ion 4,someclosedshellmoleculesthroughtheantibondingmolecularorbitaltoaccommodateforeignelectronic.Acetonesolutionofiodineshowed...
In the low-angle range, the diffraction peaks show the long-range ordering of 2D nanosheets in the pillared TS-1 samples (i.e. Si/Ti-TS-1 and Si-TS-1), consistent with the structure schemes shown in Fig. 1. Comparing the peak intensity of Conclusions In summary, the local ...
0·5 CH3OH, crystallize in the triclinic space group with unit cell dimensionsa=14·278(4),b=16·932(4),c=9·057(4) Å, α=97·40(3), β=92·07(3), γ=85·32(2)° andZ=4. The structure was refined by a block-matrix least-squares procedure to finalR 0·050 andR w 0...
The results showed that aromatics yield can be improved by the reduced transport resistance of the mesoporous structure, and by non-framework Lewis acidic Al species as well. 2. Results and Discussion Table 1 lists the porosities of the tested catalysts. The total surface area, the micropore ...