Soft (S₃-Donor) Scorpionate Complexes of Molybdenum and Tungsten Carbonyls

Abstract

The dicarbonyl(η3-allyl)molybdenum and tricarbonyliodotungsten complexes with hydrotris(methimazolyl)borate (Tm) are reported as the first examples of transition-metal organometallic complexes of the Tm ligand, serving as general entry points for a wide range of group 6 organometallic complexes. Their crystal structures have been determined, and comparisons are made with the homologous pyrazolylborate (Tp) and cyclopentadienyl (Cp) complexes, leading to predictions regarding their reactions.

Soft Scorpionate Ligands Based on Imidazole‐2‐thione Donors

“…These reactions gave rise to the seven‐coordinate [M(Tm Me )(CO) 3 I] and M(Tm Me )(CO) 2 (η 3 ‐allyl) complexes, respectively (Figure 7). 37…”

Synthesis and characterization of half-sandwich iridium(III) and rhodium(III) complexes bearing organochalcogen ligands

“…A wide variety of complexes with transition and main group metals have been synthesized and characterized due to their potential application in bioinorganic, coordination and organometallic chemistry [1][2][3][4][5][6][7][8][9][10][11][12]. The remarkable character of these two kinds of ligands are anionic and softer donor electrons ligands.…”

Molybdenum and tungsten complexes of the neutral tripod ligands HC(pz)3 and MeC(CH2PPh2)3

“…Since its first synthesis by Trofimenko in the late 1960s, a variety of different organometallic complexes containing Tp have been prepared [1][2][3][4][5][6]. Recently, homoscorpionate ligands with thioether [7,8], thiocarbonyl [9,10] or phosphine [11,12] donors have been reported, as well as NNS and NNO heteroscorpionates [13][14][15]. While the former were developed to obtain Tp analogues with a softer donor atom, the latter ones were introduced to act as molecular models for metalloproteins.…”