ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis, Physical Properties, and Spectroscopy of 2,3-Quinoxalinedicarboxamide Complexes

F. Dianzhong, W. Bo, Z. Yukun, F. Wu, and W. Junnan

Department of Chemistry, Lanzhou University, 730000 Lanzhou, China

Abstract: New complexes of the general formulae [Ln(Qxda) . Cl₃ . C₂H₆O . H₂O] (Ln = La, Pr, Y; Qxda = 2,3-quinoxalinedicarboxamide) and [Ln₃(Qxda)₂ . 3Cl₃ . 3C₂H₆O . 3H₂O] (Ln = Y, La) have been synthesized and characterized by elemental analyses, conductivity measurements, thermal (TG, DTG, DTA) method, and spectral (IR and UV-VIS) studies. All the data are discussed in terms of the nature of bonding and the possible structural types. It has been found that coordination takes place through both oxygen atoms of the amide group and two types of species, mononuclear and linear homopolynuclear, are formed.

Full paper in Portable Document Format: 465a318.pdf

Chemical Papers 46 (5) 318–321 (1992)