SYNTHESIS AND CHARACTERIZATION OF NOVEL DERIVATIVES OF N-(FERROCENESULFONYL)CARBAMIC ACID - X-RAY STRUCTURE DETERMINATION OF FERROCENESULFONAMIDE AND N-(FERROCENESULFONYL)-N'-BUTYLUREA

Ferrocenesulfonamide, 1, was converted to novel N-(ferrocenesulfonyl)u reas and N-(ferrocenesulfonyl)carbamates via reacting 1 with the corre sponding organic isocyanates or chloroformic acid eaters. The molecula r structures of 1 and N-(ferrocenesulfonyl)-N'-butylurea were determin ed by single-crystal X-ray diffraction. Crystal data: 1: monoclinic, P 2(1)/c, with unit cell dimensions a = 12.563(1), b = 9.977(2), c = 8.5 57(1) Angstrom, and beta = 98.71(1)degrees, V = 1060.2(3) Angstrom(3), Z = 4; 3e: orthorombic, Pbca, a = 9.278(1), b = 15.892(4), c = 22.043 (3) Angstrom, and V= 3250.2(10) Angstrom(3), Z = 8. In both I and 3e, the Fe-C distances of the substituted Cp ring follow a special sequenc e, the Fe-C(S) bonds being shorter than the Fe-C bonds with the neighb oring or remote C atoms. (C) 1998 Elsevier Science S.A. All rights res erved.