Photochemical Complexation Reactions of M(CO)6 (M=Cr, Mo, W) and Re(CO)5Br with Rhodanine (4‐Thiazolidinone‐2‐thioxo) and 5‐Substituted Rhodanines

Abstract

The new complexes [M(CO)5‐DABRd] [M=Cr; 1, Mo; 2, W; 3], [cis‐Re(CO)4Br‐DABRd] (4), [M(CO)5‐BRd] [M=Cr; 5, Mo; 6, W; 7] and [Mo(CO)5‐L] [L=Rd, 8; 2CBRd, 9; 2HNARd, 10; IBRd, 11] have been synthesized by the photochemical reactions of VIB and VIIB group metal carbonyls [M(CO)6] [M=Cr, Mo, W] and [Re(CO)5Br] with 5‐(4‐dimethylaminobenzylidene)rhodanine (DABRd), 5‐benzylidenerhodanine (BRd), rhodanine (Rd), 5‐(2‐chlorobenzylidene)rhodanine (2CBRd), 5‐(2‐hydroxynaphtylidene)rhodanine (2HNARd), 5‐(4‐isopropylbenzylidene)rhodanine (IBRd) and characterized by elemental analysis, FT‐IR, 1H and 13C‐{1H}‐NMR spectroscopy and by Mass spectrometry. The spectroscopic studies show that all rhodanine ligands act as monodentate ligands coordinating via the sulfur (C[dbnd]S) donor atom in (1–11).