P3F92-: An All-Pseudo-pi* 2 pi-Aromatic

Priyakumari, Chakkingal P and Jemmis, Eluvathingal D (2013) P3F92-: An All-Pseudo-pi* 2 pi-Aromatic. In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 135 (43). pp. 16026-16029.

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Abstract

A qualitative MO analysis suggests (PH3)(3)(2-) as a candidate for an all-pseudo-pi* 2 pi-aromatic; however computational studies rule out its existence. Fluorine substitution which increases the contribution of p orbitals on P in the pseudo-pi* MO makes (PF3)(3)(2-) a minimum and an aromatic. The 2 pi aromaticity arising from the bonding combination of the three pseudo-pi* fragment MOs is comparable to that in C3O32- and is another example for the analogy between CO and PF3. The dianion (PF3)(3)(2-) forms the first example of a three-membered ring with all the vertices constituted by pentacoordinate phosphorus. The ability of PF3 to form the all-pseudo-pi* 2 pi-aromatic system is not shared by the heavier analogues, AsF3 and SbF3.

Item Type:	Journal Article
Publication:	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Publisher:	AMER CHEMICAL SOC
Additional Information:	Copyright for this article belongs to AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	12 Dec 2013 10:31
Last Modified:	12 Dec 2013 10:31
URI:	http://eprints.iisc.ac.in/id/eprint/47886

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