Analysis of the π-space SC wavefunctions indicate that the electronic structure of isomer I resembles a fairly standard benzene ring augmented with two exocyclic double bonds; its resonance pattern is dominated by two Kekulé-like and three less-important Dewar-like structures. Contrary to ...
Ab Initio Study of Metal-Ring Bonding in the Bis(n...-benzene)lanthanide and -actinide Complexes...Presents information on a study that investigated the zerovalent bis(n6-benzene) f-metal sandwich complexes with the state-of-the-art quantum chemical ab initio approaches taking into account the...
The heterodinuclear complex [(η6-p-cymene)(pz)Ru(μ-pz)2Ir(CO)2] was prepared by reacting [(η6-p-cymene)Ru(pz)(Hpz)] with [Ir(acac)(CO)2]− (p-cymene = p-isopropylmethylbenzene, acac = acetylacetate).533 The X-ray structure of the protonated BF4− salt confirms two br...
frombenzeneby replacing one or more hydrogen substituents by other atoms or groups. The term “aromatic” thus came to be applied to any hydrocarbon that has the benzene ring as part of its structure, regardless of the question of aroma. Loschmidt was the first to state that inalcohols...
Mechanism of photochemical meta-cycloaddition of alkenes to the benzene ring: a novel type of molecular interaction The regioselectivity of photochemical meta-cycloaddition of alkenes to alkylbenzenes changes progressively from 2,6- to 3,5- with increasing size of the al... D Bryce-Smith,MGB Drew...
Chemical Bonding in Transition Metal Nitride Os 3 N 3 + Cluster: 6π Inorganic Benzene and δ 2 δ* 1 δ* 1 Aromaticity Inorganicbenzene-like clusters with a planar hexagonal ring areof interest in chemistry, as are new types of aromaticity, multifoldaromaticity, and in particular δ aroma...
CONTROLS < Use the buttons to display the Hydrogen 1s and Carbon sp orbitals that make up the sigma framework and the remaining p orbitals which form the two pi-bonds. Observe that the two pi orbitals are perpendicular. How useful was this page?
ChemInform Abstract: Bonding in Carbosilanes. H. PREUSSH. G. VON SCHNERINGChemInformOn the Bonding in Carbosilanes. SAVIN A. Angewandte Chemie International Edition . 1992... A Savin,HJ Flad,J Flad,... - 《Cheminform》 被引量: 118发表: 2010年 Role of precursor molecular structure on ...
Here the hydrogen bonding acceptor is the electron cloud of a benzene ring. This type of interaction is important in maintaining the shape of proteins. Hydrogen fluoride (mp –92, bp 33°C) is another common substance that is strongly hydrogen-bonded in its condensed phases. The bifluoride ion...
Adding to the fun, a 2006 article presented evidence that the carbon atom in C(PPh3)2 (where Ph stands for a benzene ring) has two lone pair electrons, but no electrons connected to the bonded groups— thus introducing the concept of a "zero-uple" bond. Expanded octets As mentioned pr...