A Unique Asymmetric [Mn$\rm{^{II}_{3}}$] Triple-Stranded Helicate from a Symmetric Pentadentate Ligand Financial support by the European Union, under contract HPMF-CT-1999-00113 (Marie Curie Fellowship to G.A.), the WFMO (J.R.), and the CW-NOW (A.L.S.) is thankfully acknowledged
Angew Chem Int Ed Engl. 2001 Sep 17;40(18):3444-3446.
doi: 10.1002/1521-3773(20010917)40:18<3444::aid-anie3444>3.0.co;2-q.