Talk:Trisilaallene

Wiki Education Foundation-supported course assignment

This article was the subject of a Wiki Education Foundation-supported course assignment, between 6 September 2018 and 11 December 2018. Further details are available on the course page. Student editor(s): Soohyunl. Peer reviewers: Brytang, Hyehwang Kim.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 04:27, 18 January 2022 (UTC)

Peer review

The brief discussion on the history of trisilaallene synthesis was nice, but it could perhaps be expanded upon further. Are there any recent examples that explore the reactivity of trisilaallene? And if so, does it partake in any interesting chemistry?

For instance, the author cites the work by Veszpremi et al. (\textit{Organometallics} \textbf{2006}, \textit{25}, 1480-1484) to comment on the reason behind the stability of the tetraalkyl-substituted trisilaallene. In that same paper, the authors report calculations on various structural isomers of \ce{Si3H4}, an example of which is a cyclotrisilanylidene. In the paper, a Laplacian distribution of cyclotrisilanylidene is reported, which could perhaps be replicated using Multiwfn. A more in-depth summary of this computational paper could serve to strengthen this review article.

Next, the author cites the work by Tanaka et al. (\textit{Organometallics} \textbf{2011}, \textit{30}, 3475-3478) to present their work on a silyl-substituted trisilaallene from a reaction with a NHC-\ce{SiCl2} adduct. However, it would be good to mention the thermal rearrangement reaction of a trisilaallene to form tetrakis(tert-butylmethylsilyl)cyclotrisilene that was reported in the paper.

Next, the author cites the work by Iwamoto et al. (\textit{J.\ Organomet.\ Chem.} \textbf{2007}, \textit{692}, 263-270), which provide a variety of reactions trisilaallene has been shown to partake in. An example is the reaction between a trisilaallene with acetone in benzene to form a strained bicyclic compound, along with a proposed mechanism. Some other reactions discussed in this paper include reaction between a trisilaallene and water, and haloalkanes. It would be good include a detailed description of these reactions and their proposed mechanisms in this review article.

Finally, do the authors in any of the cited papers discuss future directions? Do they comment on what could be further discovered with trisilaallenes? If so, including these perspectives would be good as well.

I like that the author of this review article commented on the unusual geometry of trisilallene when compared to its linear carbon analogue. In addition, the discussion on why trisilaallene is bent using an orbital explanation was useful in understanding the reason behind the bent geometry.

The author comments that DFT calculations of a tetraalkyl-substituted trisilaallene indicate that its frontier molecular orbitals are different from those of allene. It would be useful to elaborate on how they are different from those of allene.

It was nice of the author to show the orbital picture that was reflective of the reason behind trisilallene's bent geometry (Jahn-Teller distortion).

Finally, a minor point -- there are several typographical errors in the article. For example, when discussing substituent effects on the electronic structure of trisilallene, the author writes "... {\textit{t}}Bu$_2$MeSi-substiutted." Cleaning up the article by fixing typographical mistakes and improving the article by adding content suggested above would greatly improve this review on trisilaallenes. — Preceding unsigned comment added by Hyehwang Kim (talk • contribs) 19:47, 30 November 2018 (UTC)

Peer Review 2

Intro Fix chemdraw image for first image (the double bonds look a little off)

Synthesis Curious – but how did they verify that they indeed made a trisilaallene?

Structure and bonding – Geometry “The central silicon atom shows fluxional behavior in that its relative position varies with respect to the substituents planes, and the distribution of resultant isomers depends on the temperature.” “Unlike the 2s and 2p orbitals of carbon, where the whose orbital radii of maximum electron density are similar, the 3s orbital of silicon is significantly smaller than 3p orbitals (rnp– rns= -0.2 pm for n = 2 and > 20 pm for n > 2).” “The ab initio and Density functional theory (DFT) calculations predict that Si3R4_molecules with smaller substituents (R = H or Me) adopt zwitterionicstructures”

Additional notes It might be a bit late but having a section on reactivity might have been good because you mention how they are different in the intro paragraph — Preceding unsigned comment added by Brytang (talk • contribs) 01:56, 1 December 2018 (UTC)