Title

Reactions of HCI(g), DCI(g), and HBr(g) with the Adduct Pyrazine-Phosphorus(V) Chloride

Document Type

Article

Publication Date

1986

Publication Source

Inorganic Chemistry

Abstract

In previous communications we have reported the synthesis, molecular structure, and solution properties of the acid-base adduct formed from pyrazine (pz), C4H4N2, and phosphorus (V) chloride, PCl5. In the solid state the molecule, pz*PCl5, belongs to point group C2v with octahedral geometry around phosphorus. The plane of the pyrazine ring bisects the Cl-P-Cl 90° angle, and the P-N bond is unusually long, 2.021 A. In solution of nitromethane, the adduct is in equilibrium with PCl5 and pz.

This rapid exchange is responsible for a singlet in the 1H NMR spectrum, even at -100 degrees C.

Because a second nitrogen base site on the adduct is available for further reaction, we have investigated the possibility of coordinating a second mole of acid to the adduct.

Inclusive pages

4606–4608

ISBN/ISSN

0020-1669

Publisher

American Chemical Society

Volume

25

Issue

25

Peer Reviewed

yes