[structure: see text]. Cyclic hexapeptides composed of alternating L-proline and 3-aminobenzoic acid subunits with substituents on the aromatic subunits that contain free carboxylate groups are able to bind monosaccharides in 4% CD3OD/CDCl3. The binding selectivity of these peptides depends on the structure of the substituents on the aromatic subunits.

The thermal reaction between [CpFe(CO) 2 ] 2 and 1-tert-butyl-3,4-dimethylphosphole leading to phosphaferrocene has been studied with respect to its mechanistic characteristics. Isobutene was identified as the only product originating from the t Bu group, suggesting a nonradical pathway which inVolVes β-H elimination from the intermediately formed [CpFe(CO) 2t Bu].

The phosphaferrocene-substituted Cp anion 1 has been used to prepare the tricarbonyl half-sandwich complexes 1·M(CO)3 (2, M = Mn; 3, M = Re), which release one CO ligand upon irradiation and transform to the respective dicarbonyl complexes 4 and 5 with the phosphaferrocene donor group coordinated in an intramolecular chelating manner. Due to the chirality of the phosphaferrocene moiety, subsequent photolytic substitution of a further CO ligand in the manganese complex 4 by a PPh3 leads to a 11:1 mixture of diastereomers of the monocarbonyl complex 6.

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