Cooperation towards nobility: equipping first-row transition metals with an aluminium sword

Abstract

The exploration for Noble metals substitutes in catalysis has become a highly active area of research, driven by the pursuit of sustainable chemical processes. Although the utilization of base metals...

Alkane Elimination Preparation of Heterobimetallic MoAl Tetranuclear and Binuclear Complexes Promoting THF Ring Opening

“…Single crystals suitable for X-ray diffraction were grown similarly. 1 H-NMR (500 MHz, C 6 D 6 , 293 K) δ 2.18 (m, 4H, CH iBu ), 1.93 (s, 30H, Cp*), 1.22 (d, 24H, CH 3-iBu , 3 J HH = 6.4 Hz), 0.43 (d, 4H, CH 2-iBu , 3 J HH = 7.0 Hz). 13 Synthesis of [Cp*Mo(CO) 2 (µ-CO)Al(Py)(iBu) 2 ], 2.…”

“…Single crystals suitable for X-ray diffraction were grown similarly. 1 H NMR (500 MHz, C 6 D 6 , 293 K) δ 8.13 (dt, 2H, CH ortho-Py , 3 J HH = 4.9 Hz, 5 J HH = 1.6 Hz), 6.73 (tt, 1H, CH para-Py , 3 J HH = 7.9 Hz, 5 J HH = 1.6 Hz), 6.51 (m, 2H, CH meta-Py , 3 J HH = 6.4 Hz), 2.09 (m, 2H, CH iBu ), 2.09 (s, 15H, CH 3Cp* ), 1.17 (d, 12H, CH 3-iBu , 3 J HH = 6.6 Hz), 0.38 (d, 4H, CH 2-iBu , 3 J HH = 7.0 Hz). 13 C yielding a deep brown solution.…”

“…Nevertheless, despite numerous efforts and attempts, its separation from reaction co-products proved difficult, which hindered the acquisition of a satisfactory elemental analysis. 1 H NMR (500 MHz, C 6 D 6 , 293 K) δ 3.89 (t, 4H, CH 2 -O, 3 J HH = 7.8 Hz), 2.19 (m, 4H, CH iBu ), 1.98 (quintet, 4H, 3 J HH = 7.3 Hz, CH 2 ), 1.87 (quintet, 4H, 3 J HH = 8.2 Hz, CH 2 ), 1.49 (s, 30H, CH 3Cp* ), 1.26 (d, 24H, CH 3-iBu , 3 J HH = 6.5 Hz), 1.04 (t, 4H, CH 2 -Mo, 3 J HH = 8.8 Hz), 0.40 (d, 8H, CH 2-iBu , 3 J HH = 7.1 Hz). 13…”

“…Aluminum-based heterobimetallic complexes are burgeoning as captivating entities in coordination chemistry [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15], presenting unique structures and reactivities. The distinct properties of aluminum, such as its hard Lewis acidity or its large palette of coordination modes, coupled with the diverse reactivity of transition metals, pave the way for innovative catalytic and synthetic applications [15][16][17][18][19][20].…”

Cooperative dihydrogen activation with unsupported uranium–metal bonds and characterization of a terminal U(iv) hydride

“…Cooperative chemistry 1 between heterobimetallic complexes has attracted attention for years as they demonstrate enhanced and unique reactivity compared to monometallic complexes or their fragments alone. 2–7 This has traditionally been done with an early transition metal, redox-inactive but highly Lewis acidic metal such as zirconium( iv ) paired with a low-valent middle or late transition metal such as cobalt, 8–10 iron, 11 or iridium. 12 While this reactivity is well-established with transition metals, 13 the focus with f elements has been on the synthesis of new f element-metal bonds, 14–45 with very little reactivity demonstrated with these complexes.…”