Syntheses and Crystal Structures of Ferrocenoindenes

Abstract

Ferrocenoindenes display planar chirality and thus represent valuable ligands for asymmetric catalysis. Here, we report on the synthesis of novel 3-(1,1-dibromomethylene)ferroceno[1,2-a]indene, (Z)-3-(1-bromomethylene)-6-iodoferroceno[1,2-a]indene, and benzo[5,6-f]ferroceno[2,3,a]inden-1-one. Any application-oriented design of chiral catalysts requires fundamental knowledge about the ligands involved, not only in terms of atom-connectivity, but also in terms of their three-dimensional structure and steric demand. Therefore, the crystal structures of 2-ferrocenylbenzoic acid, ferroceno[1,2-a]indene, and (Z)-3-(1-bromomethylene)-6-iodoferroceno[1,2-a]indene have been determined. The bond-lengths that can be retrieved therefrom also allow for an estimation of the reactivity of the aryl-iodo, bromo-methylidene and dibromomethylidene moieties.

Spectroscopic, Electrochemical, andIn SilicoCharacterization of Complex Formed between 2-Ferrocenylbenzoic Acid and DNA

“…Appropriate crystals for analysis were collected for single X-ray diffraction studies at 100 K. The crystallographic dimensions are reported in Table 1. The crystallographic data obtained in this case are slightly different from the literature reported one that may be attributed to the decrease in temperature (i.e., 100 K) used for our data collection [40]. Figure 3.…”

Syntheses, Structural Snapshots, Solution Redox Properties, and Cytotoxic Performances of Designated Ferrocene Scaffolds Appended with Organostannyl(IV) benzoates en Route for Human Hepatic Carcinoma

“…The molecular structure of FcL 2 H is shown in Figure . The structures of FcL 1 H and FcL 3 H are already available in the literature; , however, the structure of FcL 1 H is included in Figure for the sake of comparison with the other compounds.…”

“… a The structure of FcL is already available in the literature, but the structure was redetermined for comparison with other compounds. …”

“…Crystal Data and Structure Refinement Details for Metallo Proligands FcL 1 H and FcL 2 H and Ferrocenyl-Appended Triorganotin(IV) Compounds 2, 3, 5−7, and 10The structure of FcL 1 is already available in the literature,55 but the structure was redetermined for comparison with other compounds.…”