A cyclophane ligand (H6L) bearing three β-oxo-δ-diimine arms and the corresponding tri-iron and -zinc complexes in which the metal ions are bridged by either chlorides, viz. Fe3Cl3(H3L) (1) and Zn3Cl3(H3L) (2), or hydrides, viz. Fe3H3(H3L) (3), Zn3H3(H3L) (4), were synthesized and characterized. 1 adopts a chair-shaped C3v-symmetric [Fe3(μ-Cl)3]3+ cluster wherein only one hemisphere of the ligand is metallated and the other three ketoimine sites remain protonated as evidenced by single crystal X-ray diffraction and vibrational and NMR spectroscopic analyses. 3 and 4 were synthesized by substitution of the bridging chlorides in 1 and 2 using KBEt3H and are accessed with retention of the three protonated ketoimine sites.
A cyclophane ligand (n class="Gene">H6L) bearing three β-oxo-δ-diimine arms and the corresponding tri-iron and -zinc complexes in which the metal ions are bridged by either chlorides, viz. Fe3Cl3(H3L) (1) and Zn3Cl3(H3L) (2), or hydrides, viz. Fe3H3(H3L) (3), Zn3H3(H3L) (4), were synthesized and characterized. 1 adopts a chair-shaped C3v-symmetric [Fe3(μ-Cl)3]3+ cluster wherein only one hemisphere of the ligand is metallated and the other three ketoimine sites remain protonated as evidenced by single crystal X-ray diffraction and vibrational and NMR spectroscopic analyses. 3 and 4 were synthesized by substitution of the bridging chlorides in 1 and 2 using KBEt3H and are accessed with retention of the three protonated ketoimine sites.
Authors: Oliver Einsle; F Akif Tezcan; Susana L A Andrade; Benedikt Schmid; Mika Yoshida; James B Howard; Douglas C Rees Journal: Science Date: 2002-09-06 Impact factor: 47.728
Authors: Ying Yu; Azwana R Sadique; Jeremy M Smith; Thomas R Dugan; Ryan E Cowley; William W Brennessel; Christine J Flaschenriem; Eckhard Bill; Thomas R Cundari; Patrick L Holland Journal: J Am Chem Soc Date: 2008-04-30 Impact factor: 15.419
Authors: Maurice Frederic Pilz; Christian Limberg; Serhiy Demeshko; Franc Meyer; Burkhard Ziemer Journal: Dalton Trans Date: 2008-03-04 Impact factor: 4.390