The First Organobismuth Rings: (RBi)3 and (RBi)4, R=(Me3Si)2CH

Organobismuth(III) and Dibismuthine Complexes Bearing N,N′-Disubstituted 1,8-Diaminonaphthalene Ligand: Synthesis, Structure, and Reactivity

“…The N,N′-disubstituted 1,8-diaminonaphthalene ligands of 10 are in a trans conformation to each other, and the N–Bi–Bi angles lie in the range of av 89.34° and av 89.57°. The Bi–Bi bond distance of 3.0197(2) Å corresponds to a normal bismuth–bismuth single bond as found in (Me 3 Si) 4 Bi 2 (3.035(3) Å) or R 4 Bi 4 (R = (Me 3 Si) 2 CH; av 3.005 Å) …”

Synthesis, structure and reactivity of complexes containing a transition metal–bismuth bond

“…The inactivity of the bismuth lone pair in such species means that the metals are largely coordinated by the electrons in the double or triple Bi-Bi bond. The reactions of neopentyl- [126] and trimethylsilylmethyl-cyclobismuthanes [127] with the transition metal carbonyl compounds [Fe 2 (CO) 9 ] and [W(CO) 5 (THF)] lead to cyclic and side-on coordinated dibismuthane complexes, respectively [128][129][130] (Fig. 12) [135].…”

Syntheses, solid-state structures, solution behavior of hypervalent organobismuth(III) compounds [2-(Et2NCH2)C6H4] BiX3− and DFT characterization of [2-(Me2NCH2)C6H4] BiX3− [X = Cl, Br, I; n= 1–3]

“…Recent developments show that these difficulties can be overcome at least partially by two strategies. One is the use of bulky substituents such as (Me 3 Si) 2 CH [9][10][11][12][13][14], 2,6-R 2 C 6 H 3 (R = Mes [15][16][17][18][19], 2,6-i Pr 2 C 6 H 3 [18]), 2,4,6-R 3 C 6 H 2 [(Me 3 Si) 2 CH [20][21], Ph [22,23]], 2,6-[(Me 3 Si) 2 CH] 2 -4-(Me 3 Si) 3 C-C 6 H 2 [24][25][26][27], 2,6-Mes 2 -4-t Bu-C 6 H 2 [19]. Another strategy is to use one pendant arm ligands such as 2-(MeOCR 2 )C 6 H 4 (R = Me [28][29][30], CF 3 [31]) and 2-(Me 2 NCH 2 )C 6 H 4 [32], or ''pincer" ligands like 2,6-(Me 2 NCH 2 ) 2 C 6 H 3 [32,33], 2,6-[MeN(CH 2 CH 2 ) 2 NCH 2 ] 2 C 6 H 3 [33], and 2,6-(ROCH 2 ) 2 C 6 H 3 (R = Me [34], t Bu [34,35]).…”