Cyclometallation of Platinum Group Elements: Between Complexes and Organometallics
A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Organic Crystalline Materials".
Deadline for manuscript submissions: closed (11 January 2024) | Viewed by 2407
Special Issue Editor
Special Issue Information
Dear Colleagues,
Many organic ligands, especially of the heterocyclic type, coordinate transition metal ions using N,C- or P,C-chelating mode. While the formation of metal–nitrogen or metal–phosphorus bonds involves an electron lone pair present at the N or P atom, the metal–carbon bond is usually created following the deprotonation of the respective CHn moiety. This is why the obtained metal–organic compounds contain both M–N or M–P and M–C bonds, so they can be regarded as either metal complexes or organometallics. In the geometrical sense, such chelation processes result in the occurrence of the ring system with participation of the metal atom and are thus often called cyclometallation.
The above-described cyclometallated compounds are abundant for platinide group metals—in the broad sense of this meaning, i.e., including not only palladium and platinum, but also ruthenium, rhodium, osmium, and iridium. These species form single crystals suitable for X-ray analysis relatively easily; moreover, as the central Pd(II), Pd(IV), Pt(II), Pt(IV), Ru(II), Rh(III), Os(II), and Ir(III) central ions are diamagnetic, they can be studied via NMR spectroscopy. A large number of studies for such compounds have been carried out during the last few decades, and that number is increasing from year to year because of various applications, related mainly to biological or catalytic activity and luminescent properties.
The scope of this Special Issue covers research on synthesis, X-ray, and spectroscopic studies as well as potential applications of the cyclometallated Pd, Pt, Ru, Rh, Os, and Ir compounds with various N,C- and P,C-chelating organic ligands. Review papers are also welcomed.
Prof. Dr. Leszek Pazderski
Guest Editor
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Keywords
- platinum group metals
- cyclometallation
- palladium complexes
- platinum complexes
- ruthenium complexes
- rhodium complexes
- osmium complexes
- iridium complexes
