NA-DIAQUATRIS(ALPHA-METHYLACRYLATO)-LANTHANUM(III)

The structure of methacrylato-O,O')lanthanum-bis-mu-methacrylato-O, O' :O; O: O, O'diaqua(methacrylato-O, O')lanthanum)-bis-mu-methacryl-ato- O:O';O:O'], [La-2(C4H5O2)(6)(H2O)(4)], has been determined by single-c rystal X-ray diffraction. Each La3+ ion is coordinated by seven O atom s from the methacrylato groups and by two water molecules which define a distorted tricapped trigonal prism. Each of the three independent m ethacrylato ligands bonds to the La-III ions in a different way. The c rystal contains infinite chains running parallel to the ab direction.