1 L4D {(S)-N-(2-{methyl[(pyridin-2-yl-kappan)methyl]amino-kappan}ethyl)-N-[(pyridin-2-yl-kappan)methyl]glycinato-kappa~2~N,O}iron(2+) 1.000 2 L2M {(R)-N-[(1s,2s)-2-{methyl[(pyridin-2-yl-kappan)methyl]amino-kappan}cyclohexyl]-N-[(pyridin-2-yl-kappan)methyl]glycinato-kappa~2~N,O}iron(2+) 0.733