Diverse reactivity of a boraguanidinato germylene toward organic pseudohalides

Abstract

The reactivity of the N,N-chelated germylene with pseudohalides was investigated producing various types of novel heterocycles.

Reactions of main group compounds with azides forming organic nitrogen-containing species

“…In 2018, the Ketkov and Dostál groups reported the reaction of boraguanidinato germylene Ge12 with azides. 151 The reaction of Ge12 with AdN 3 in benzene at room temperature for 2 h afforded the azadigermiridene product Ge12-P in 45% yield (Scheme 88). In 2020, Su, Wu, Li and co-workers described the reaction of alkynylgermyl-substituted germylene Ge13 with TMSN 3 .…”

Insertion Reaction of Me3SiN3with Bis(germylene)

“…The Ge−N(SiMe 3 ) bond lengths (1.8821 (12) and 1.9062(12) Å) are slightly shorter when compared with that of PhC(N t Bu) 2 Ge(:)−N(SiMe 3 ) (1.915(2) Å) in compound PhC(N t Bu) 2 Ge(:)−N(SiMe 3 )-GeL 3 . 9 However, they are longer than those found in threemembered ring compounds [iPr 2 NB(NDmp) 2 Ge] 2 N(Ad)-(Ge−N(Ad) 1.848(2) and 1.867(2) Å) (Dmp = 2,6-Me 2 C 6 H 3 ) 11 and [PhN(GeAr 2 ) 2 ] (Ge−N 1.876(1) Å) (Ar = 2,6-Et 2 C 6 H 3 ). 12 The separation between the two Ge atoms is 3.2218(8) Å.…”

Mono- and Dinuclear Aluminium Complexes Derived from Biguanide and Carbothiamide Ligands

“…In maingroup chemistry, they have been particularly beneficial, and, thanks to the electronic and steric capabilities of diamide ligands, molecules that were formerly considered unstable such as boryllithium [1] and silylenes [2] have been isolated for the first time. While significant achievements could be realized using diamide ligands, their applicability is not universal which is why alternative dianionic N,N-chelates, Figure 1, have been used during the last decade to stabilize low-valent and electron-precise compounds of the Group 13 and 14 elements [3][4][5][6][7][8][9][10][11][12][13][14]. Furthermore, certain monoanionic ligands such as the wellestablished β-diketiminates, also called "NacNac", can be transferred to their dianionic relatives [15,16].…”