Crystal structure of 2-azido-1,3-bis(2,6-diisopropylphenyl)-1,3,2-diazaphospholidine

Abstract

The synthesis, spectroscopic and crystal structure of 2-azido-1,3-bis­(2,6-diiso­propyl­phen­yl)-1,3,2-di­aza­phospho­lidine is reported.

Unique Interaction between Layered Black Phosphorus and Nitrogen Dioxide

“…In the most stable adsorption configurations of the adsorption complex of each d-SLBP, the N atom of NO is near d-SLBP at a distance of 1.78-1.98 Å (Figure 4b). This distance is close to (in the case of SV, DV3, EGa2) or slightly larger (in the case of EGz1) than the length of a typical P-N single bond (commonly accepted value is 1.89 Å [50,51]), but much smaller than the distance (2.47 Å) between NO and SLBP (Table 1), which implies that there is a strong chemisorption between NO and unsaturated d-SLBP. The difference is that d-SLBP binds NO by forming a weak P-N bond but reacts with NO 2 by abstracting one O atom in redox reactions.…”

“…The small E ad values (−0.310 to -0.138 eV), low charge transfer amounts (−0.15 to 0.04 e) and large distances to the SLBP plane (2.47-3.44 Å) indicate weak interaction between gas molecules and SLBP (Table 1). The distance of the N atom in NO to SLBP (2.47 Å) is the shortest in the most stable adsorption configurations of the six gas molecules, but is still much longer than a P-N covalent bond length (1.89 Å [50,51]). The adsorption of gas molecules on perfect SLBP plane is dominated by vdW forces, as indicated by the ratio of 57-82% relative to E ad .…”

Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis

“…An alternative approach affords 2-bromo-1,3,2-diazaphospholene derivatives directly by the reaction of the diazadiene 272 with PBr 3 and cyclohexene [ 122 ]. The 2-halogenate-DAPs may further react with suitable nucleophiles under halide displacement to give products with a variety of functional P -substituents 274 ( Scheme 65 ), (e.g., OTf [ 123 ], OMe [ 124 ], oxide [ 125 ], H [ 126 ], azide [ 127 ], halogen [ 128 ])…”