Two nicotinate binding modes are observed in the dinuclear title compound, [Sn(2)(C(7)H(6)Br)(4)(C(6)H(4)NO(2))(4)(H(2)O)(2)]: in the first, a terminal O,O'-chelating molecule binds to a water-coordinated diorganotin cation, while the second mode corresponds to an O:N-bridging molecule which binds to two cations. The two Sn atoms exist in trans-C(2)SnNO(4) penta-gonal-bipyramidal geometries. Adjacent dinuclear units are linked by O-H⋯N hydrogen bonds, generating a linear chain, which propagates in the b-axis direction. O-H⋯O inter-actions are also observed.
Adjacent units of the title polymeric complex, [Sn(C(7)H(6)F)(3)(C(8)H(12)NO(2)S(2))], are bridged by the carboxyl-ate ion into a helical chain running along the b axis. The Sn(IV) atom shows a distorted trans-C(3)SnO(2) trigonal-bipyramidal coordination and is displaced by 0.113 (2) Å out of the C(3)Sn girdle in the direction of the covalently bonded O atom. The ring is disordered of two positions with an occupancy of 0.631 (4) for the major occupied site.