N‐Heterocyclic Carbene Stabilized Digermanium(0)

Abstract

Zero Ge! Reductions of an N‐heterocyclic carbene (NHC) adduct of GeCl2 with magnesium(I) dimers afford a dimeric compound (see picture), which structural and theoretical studies show to contain a singlet digermanium(0) fragment :GeGe: datively coordinated by two NHC ligands.

A CW‐EPR, ENDOR and special TRIPLE resonance study of a novel magnesium ketyl radical

“…2 -2,6 ( Dip Nacnac) or C 6 H 2 Me 3 -2,4,6 ( Mes Nacnac), [5] and have investigated their use as selective reducing agents in organic [5] and organometallic [5,6] syntheses. Accordingly, we saw the possibility of using these compounds to reduce ketones to facilely generate stable, crystalline magnesium ketyl complexes.…”

Coordination chemistry of ditopic carbanionic N-heterocyclic carbenes

“…Accordingly, there are several reviews already published documenting the use of NHCs as ligands for the formation of transition-metal complexes [1][2][3][4][5][6][7][8][9][10][11][12]. Similarly, the strong -donor ability of NHCs has also been employed in main-group chemistry for the isolation of low-coordinate, lowoxidation state diatomic species, E 2 (NHC) 2 (E = Si, Ge, Sn, P, As) [17][18][19][20][21], including, most recently a B 2 (IPr) 2 species (IPr = 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene), which features a boron boron triple bond [22].…”

Distickstoff als doppelte Lewis‐Säure: Struktur und Bindung von Triphenylphosphinazin N2(PPh3)2

“…Dies war der Ausgangspunkt für intensive Untersuchungen, die zur Synthese neuer Carbone und Carbonkomplexe führten. [23] Hier zeigen wir, dass das 1964 [10] isolierte Triphenylphosphinazin ein Donor-Akzeptor-Komplex von Distickstoff ist, Ph 3 …”