Catalysis using transition metal complexes featuring main group metal and metalloid compounds as supporting ligands

Abstract

Recent development in catalytic applications of transition metal complexes having an M–E bond (E = main group metal or metalloid element), which is stabilized by a multidentate ligand, is summarized....

[Rh2(MEPY)4] and [BiRh(MEPY)4]: Convenient Syntheses and Computational Analysis of Strikingly Dissimilar Siblings

“…The resulting large HOMO/LUMO gap in 13 (Δ E =2.10 eV versus 0.50 eV in 1 ) in combination with a narrow binding site likely accounts for the poor reactivity of [BiRh(5 S ‐MEPY) 4 ]; this notion is in accord with previous conclusions that carbene formation is the rate‐determining step in reactions catalyzed by achiral [BiRh] complexes [20] . From the conceptual viewpoint, this result implies that metal‐metal bonding is a prime reactivity‐determinant [28,40] . In order to harness the full potential of heterobimetallic cooperation in (chiral) carbene chemistry, future catalyst design must primarily aim at properly adjusting the net effect of the internal metallo‐ligand as the arguably most critical parameter.…”

A Free Aluminylene with Diverse σ‐Donating and Doubly σ/π‐Accepting Ligand Features for Transition Metals**

“…In addition, the coordination behavior of free one‐coordinate aluminylenes toward transition metals is hitherto unknown [3d,e,j,k, 4a–j, 5d,g, 15, 16] . The formation of 3 – 5 demonstrates the facile access to metal‐aluminylene complexes through this straightforward process.…”

Ag2CO3 containing magnetic nanocomposite as a powerful and recoverable catalyst for Knoevenagel condensation

“…Transition metal catalysts have been useful in modern synthetic organic chemistry due to their diverse reactivity in enabling various molecular conversions 47 . The reactions performed using these catalysts can be classified into three groups based on the role of the metal: 1. catalytic reactions based on the oxidation/reduction cycle of the transition metal, 2. catalytic reactions in which the transition metal acts as a Lewis acid and 3. reactions catalyzed by coinage metals (Cu, Ag and Au) 48 .…”