Erratum

Ohne Zusammenfassung     

A nucleophilic reaction of a phosphaalkene: the methylation of mesityldiphenylmethylenephosphine

The reaction of the title compound ($\underset{?}{1}$) with methyl iodine gives the ylide $\underset{?}{3}$ and the phosphonium salt $\underset{?}{4}$. The intermediate formation of the phosphoniaalkene $\underset{?}{2}$ is postulated.     

Beiträge zur Entwicklung psychotroperStoffe, 2. Mitt.: Basisch substituierte Dibenzo-oxepin-, Dibenzo-thiepin- und Dibenzo-cycloocten-Derivate

Zusammenfassung Die Umsetzung von 6, 11-Dihydro-dibenzo[b e[oxepin- (Xa) und-thiepin-11-onen (Xb) bzw. von 5,6,7,12-Tetrahydro-dibenzo [a d]cycloocten-12-on (Xc) mit verschiedenen tert. Aminoalkylmagnesiumhalogeniden führt zu den entsprechenden Carbinolen (XIa–c), welche durch Wasserabspaltung die korrespondierenden tert. Aminoalkyliden-Verbindungen (V a–c) wird eine spezielle Für sek. Aminoalkyliden-Derivate (Va–c) wird eine spezielle Darstellungsvariante beschrieben. Strukturelle Zusammenhänge der Verbindungen vom Typ V a–c mit therapeutisch bekannten psychotropen Stoffen werden diskutiert.In der vorliegenden Fassung: am 30. Mai 1962.Mitt.:K. Stach undH. Spingler, Mh. Chem.93, 889 (1962).     

A model of the chemical bond must be rooted in quantum mechanics, provide insight, and possess predictive power

In this response to the preceding paper by Bader, we show that the core arguments and statements presented in the latter are flawed. We argue that it is insufficient for a model of the chemical bond to be rooted in quantum mechanics. A good model must in addition provide insight and possess predictive power. Our molecular orbital (MO) model of the chemical bond, in particular, the associated energy-decomposition approach satisfies all these conditions. On the other hand, Atoms-in-Molecules (AIM) theory is only rooted in quantum mechanics as far as its mathematical framework is concerned. The physical status of its central concepts is not so clear. In particular, "bond paths" and "bond critical points" are once more confirmed not to be indicators of a stabilizing interaction. Moreover, AIM theory lacks any predictive power. We also address specific questions raised in the preceding paper. Finally, interpreting chemical bonding implies choosing a perspective on this phenomenon. That there are many perspectives is a matter of fact and this is in no way unphysical. What is unscientific is to claim uniqueness and truth for one of these choices, namely AIM, and to dismiss on this ground all other approaches.