SODIUM ENANTHROLINE)-MU-HYDROXO-DI(THIOSULFATO)DIZINC(II) PENTAHYDRATE METHANOL SOLVATE

The title complex, triaqua-1 kappa(3)O-bis(2,9-dimethyl-1,10-phenanthr oline)-2 kappa(2)N,N';3 kappa(2)N,N'-mu-hydroxo-2:3 kappa(2)O-di-mu-th iosulfato-1 :2 kappa(2)O: S;1: 3 kappa(2)O:S-sodiumdizinc(II) dihydrat e methanol solvate, [Zn-2(C14H12N2)(2)(mu-OH)(mu S2O3)(2)Na(H2O)].2H(2 )O.CH3OH, presents an unusual ten-membered ring containing three diffe rent metal centers, two zinc and one sodium, bridged by one hydroxo an d two thiosulfate groups. The thiosulfate groups bridge through S and O atoms, with a mean SS bond length which is longer than that found in the free anion, with the corresponding S-O distances shorter Both zin c coordination spheres are tetrahedral, while that of the pentacoordin ate sodium is distorted trigonal bipyramidal. The monomeric units are linked by strong hydrogen-bonding interactions into chains parallel to z, which in turn are held together by hydrogen-bonding contacts throu gh some not fully occupied solvate molecule sites, as well as by van d er Waals interactions.