A diamino-substituted carbodiphosphorane as strong C-donor and weak N-donor: isolation of monomeric trigonal-planar L·ZnCl2

Abstract

Studies of the reactivity and coordination properties of the diamino-carbodiphosphorane 1 revealed that 1 is a weak N donor, but strongly coordinates via the carbon atom thus allowing the isolation of low-valent metal species.

Synthesis of Carbophosphinocarbene and Their Donating Ability: Expansion of the Carbone Class

“…However, it was Bertrand, Petz, Roesky, Driess, Kira and Frenking who are responsible for putting this octet-defying carbogenic species including silylones and germylones on the map of contemporary chemistry with interest spanning almost all the conventional disciplines of chemistry. Of those carbones, carbodicarbenes and bisylides by Ong, , Stephan, Meek, Gessner and Fürstner emerged as notable models in their supporting role for main-group chemistry, transition-metal complexes, and catalysis. The success of these cases can be attributed to the presence of framework diversity in these carbone classes, enabling the possibility of modulating the steric and electronic of these ligands for specific reaction conditions.…”

Phosphorus‐Containing Superbases: Recent Progress in the Chemistry of Electron‐Abundant Phosphines and Phosphazenes

“…However, it should be briefly noted, that Gessner et al. recently explored a Lewis basic diamino‐substituted carbodiphosphorane with strong C‐donor properties, that preferentially binds to neutral metals and main group elements via the carbon center instead of the amino groups [144] …”

“…However, it should be briefly noted, that Gessner et al recently explored a Lewis basic diamino-substituted carbodiphosphorane with strong C-donor properties, that preferentially binds to neutral metals and main group elements via the carbon center instead of the amino groups. [144] In order to design a Brønsted carbon superbase that overcomes the basicity of Schwesinger's commercially available tetraphosphazenes 18 and additionally features a significantly decreased molecular weight, Sundermeyer and co-workers focused on the classical proton sponge concept and brought the basicity centers of phosphonium ylides in spatial proximity. [145] Scheme 16.…”

Carbones and Carbon Atom as Ligands in Transition Metal Complexes

“…Later on, a series of related carbones were synthesized, but for which transition metal complexes are unknown so far. Quite recently the new amino substituted carbone 1e was published together with Zn and Rh addition compounds (See Scheme 1) [32]. In the 31P NMR spectra singlets at about −4.50 (1a), −6.70 (1b), −29.6 (1c), −22.45 (1d), and 12.5 In 1961, 1a was detected by Ramirez [30], and 1b-1d stem from the laboratory of Schmidbaurs group [31].…”