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answer to see how the hybridization in cyclopropane was determined). … Now, when we compare the hybridization of the $\ce{C-H}$ bonds in cyclopropane and propane we see that there is more s character in the cyclopropane $\ce{C-H}$ bonds, this explains the increased acidity …

The $\ce{H-C-H}$ angle in cyclopropane has been measured to be $114^\circ$. … By the way, an x-ray study of a cyclopropane derivative1 shows significant electron density only exterior to the cyclopropane ring. …

Either 1) a second bond is formed at the same time using the two remaining spin-paired electrons (one on ethylene and one on the carbene) to form cyclopropane in a spin-conserving, concerted addition or … Before the biradical can form the final bond and close to cyclopropane, we must wait for one of the electron spins to flip so that we have a singlet biradical. …

counting atoms, 2+0 if we are counting electrons) cycloaddition (adding the carbene's empty $\mathrm{p}$-orbital across the $\ce{C-H}$ bond - analogous to its addition to an olefinic pi bond to produce a cyclopropane …

non-equivalent - the resultant hybridization of water The Question The $\ce{H-C-H}$ angle in cyclopropane has been measured to be 114°. … Now, if we remove a proton from cyclopropane and generate the cyclopropyl anion, we move from a situation where we had a pair of electrons shared between carbon and hydrogen in a $\ce{C-H}$ bond to a situation …

In fact, the p-character is high enough that a cyclopropane compound will absorb bromine much like an olefin. … In the tricyclopropylcarbinyl carbocation there are 3 cyclopropyl groups stabilizing the carbocation center. …

In fact, the p-character is so high that a cyclopropane compound will absorb bromine much like an olefin. … In the perpendicular conformation, the cyclopropane $\ce{C-H}$ bond is in the same plane as the carbocation p-orbital, the $\ce{C-C}$ bond is not - there is no carbocation stabilization by the cyclopropane …

Look at the last column ("Total Strain") in Table I, it shows that cyclopropane is slightly more strained than cyclobutane, while cyclopentane and cyclohexane are both much less strained. … Therefore, since cyclopropane has the most ring strain and since propyl, ethyl and methyl groups don't contain any SE, the correct answer to the question is "A". …

J_\ce{C-H}$ coupling constant in cyclopropane is 161 Hz. Using equations (2) and (1), we find that the C–H bond in cyclopropane has 32% s-character and is $\mathrm{sp^{2.1}}$ hybridized. … So right off the bat, we would expect more fluorine at position 4, than at either of the olefinic positions or the cyclopropyl position. The relevant $^1\! …

Considering fluorobullvalene, there are 4 possible isomers: 1-fluorotricyclo[3.3.2.02,8]deca-3,6,9-triene, i.e. the fluorine could be attached to any of the 3 equivalent cyclopropyl carbons 3-fluorotricyclo … could be attached to any of the 3 equivalent olefinic carbons beta to the cyclopropane ring 5-fluorotricyclo[3.3.2.02,8]deca-3,6,9-triene, i.e. the fluorine could be attached to the unique tris-allylic …

A good example of such behavior can be found in cyclopropane. … Indeed, cyclopropane adds bromine much like an alkene (ref. 3) Since someone above commented that ${sp^3}$ $\ce{C-H}$ bonds are "very stable and typically do not want to react". …

The rear cyclopropane bond is bisected by the plane of the screen, this plane also contains the cyclopropyl carbon connected to the carbene center. … Like when we break a bond in cyclopropane we have a 1,3-biradical. …

You've already figured out why cyclopropanone exists as a hydrate. So the correct answer is B, since there is no driving force that would provide any special stabilization of its hydrate. …

the reaction as an $\mathrm{SN2}$ reaction Use trigonometry to deduce the angle of nucleophilic approach The bent-bond model is widely used in chemistry to describe highly-strained systems such as cyclopropane …

In order to better understand the bent bond model let's first consider its application to cyclopropane and then move to ethylene. … (image source) Further, the $\ce{H-C-H}$ angle in cyclopropane has been measured and found to be 114 degrees. …