부산대학교 도서관

The synthesis and crystal structure of N,N -diethyl-4-vinylbenzamidinium squarate (I) ([C.sub.15][H.sub.19][N.sub.2]O.sub.2) are reported. The squarate dianion (Sq.sup.2-) and (E,Z)-configured amidinium groups are linked through two intermolecular N***O hydrogen bonds with distances of 2.725 A for E and 2.731 A for the Z configurated amidinium parts, thus forming an infinite three-dimensional network. The torsion angle between phenylene ring and amidinium group is 66.1(2)deg and the analogous one between the first fragment and the vinyl group 9.6(8)deg. The IR-characteristic band assignment both in solution and in solid state has been carried out by means of non- and linear polarized IR- spectral analysis.