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

The structure of catena-poly[(diaqua(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-crystal X-ray diffraction. Each La3+ ion is coordinated by seven O atoms from the methacrylato groups and by two water molecules which define a distorted tricapped trigonal prism. Each of the three independent methacrylato ligands bonds to the La-III ions in a different way. The crystal contains infinite chains running parallel to the ab direction.