Benzene reacts (1) with chlorine, to form (a) substitution products (one-half of the chlorine forms hydrogen chloride) such as chlorobenzene, C6H5Cl; dichlorobenzene, C6H4Cl2(1,4) and (1,2); trichlorobenzene, C6H3Cl3(1,2,4); tetrachlorobenzene (1,2,3,5); and (b) addition produc...
The C-C bond cleavage and ring contraction of toluene can also occur in a similar fashion, though some details are different due to the presence of the methyl substituent. Obviously, the facile release of H2 from the metal hydride cluster to provide electrons and to alter the charge ...
Ethyl benzoate has a carbonyl carbon atom bonded directly to the aromatic ring. As a result, its rate of bromination will be significantly slower than that of benzene. Problem 5.10 Predict whether the following compounds react faster or slower than benzene in a reaction with bromine and FeBr3....
During the decomposition of methane in CVI, benzene is a basic element of pyrolytic aromatic hydrocarbons which can further form the pyrocarbon, thus the present work is performed by limiting the reaction route only to the first cyclic ring formation. In this work, a DFT study was employed to...
Inorganicbenzene-like clusters with a planar hexagonal ring areof interest in chemistry, as are new types of aromaticity, multifoldaromaticity, and in particular δ aromaticity beyond carbon-basedorganic systems. Here we report on a comp... N Liu,XR You,HJ Zhai - 《Acs Omega》 被引量: 0...
Ring currents in (C6H6)Cr(CO)3, 1, (cis-1,3-butadiene)Cr(CO)4 (4), (C6H6)2Cr (5), (C4H4)Fe(CO)3 (6), and (cis-1,3-butadiene)Fe(CO)3 (8) have been assessed ... PVR Schleyer,B Kiran,VS Dan,... - 《Journal of the American Chemical Society》 被引量: 257发表: 200...
3c. The X-ray diffraction analysis demonstrated that 2-PF6 contains a coplanar metallacyclopentadiene ring with an exocyclic imino group. The structural parameters indicated that the metalla- cycle of 2-PF6 could be represented by two resonance structures, 2- PF6 and 2b-PF6 (Fig. 3a), with...
Among the regioisomeric N β-protonated dications (with R = –F, –Cl, and –CN), those with the R group in the para position were preferred. For the regioisomeric, ring-protonated benzenium-diazonium dications, the meta -protonated dications were more favored (by DFT and MP2). Influence...
The host–guest distance among the centroids of the ring in nitrobenzene and the benzene ring of the TPB ligand is 4.135 Å (Fig. 5a). Nitrobenzene is oriented with the part of the guest molecule that is more electropositive towards the more electronegative part of the coordinated TPB...
Competitive reactions, however, often lead to the formation of linear chains, producing imperfect polymers with a low degree of branching and low molecular weight. Cyclotrimerization of alkynes is a reaction in which three alkynes cyclize to form a benzene ring. It was first reported by Berthelot...