Ruthenium ii cyclooctadiene bis-(2,2,6,6-tetramethylheptanedionate)12289-94-0100 % similar Dichloro[(1,2,5,6-η)-1,5-cyclooctadiene]ruthenium50982-12-238 % similar Dichloro[(1,2,5,6-η)-1,5-cyclooctadiene]ruthenium50982-13-338 % similar