New Phosphorus Analogues of Nitrogen Classics—No Carbon Copies

Abstract

Getting heavy: The recently prepared phosphorus analogues of two old acquaintances, urea and dinitrogen tetroxide, bear some structural resemblance to their archetypes but are no carbon copies. Their syntheses and chemical properties reveal rather certain peculiarities, which back the doctrine that the electronic properties of the heavier elements in a group differ from those of the lightest congener.

A Defect‐rich N, P Co‐doped Carbon Foam as Efficient Electrocatalyst toward Oxygen Reduction Reaction

“…[5] Apart from sole-doping, dual-doping or ternary-doping with a second or third heteroatom such as B, S and P, have been used to further tune the electronic and surface properties. [12][13][14][15] In the case of N, P codoped carbons, P atom possesses larger atomic radii and distinct electronic properties from N atom, [16] exhibiting differ-ent doping manner, thus make it a more complex system to determine active sites. Zhang et al [18] found that among various types of local microstructures in N, P co-doped carbon foam, the isolated N-sites is active toward ORR.…”

N‐Heterocyclic Carbene–Phosphinidyne Transition Metal Complexes

“…[11,12] Robinsons iconic phosphorus(0) compound 2 ("carbenestabilized diphosphorus") represents another similar system, which was obtained by potassium graphite reduction of the carbene-PCl 3 adduct. [13,14] Further reduction of 2 with lithium metal afforded 3, which can be regarded as the lithiated form of the carbene-stabilized parent phosphinidene 4 (IPr= PH). [15] The latter was first described by Driess and coworkers, who demonstrated that 4 can be generated by PH transfer from a phosphasilene to the NHC.…”

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

“…Thus, a product with two phosphorus atoms such as RI=P-P=IR (where IR represents the 1,3-R2-imidazol-2-ylidenes) can be oxidized to the tetraoxide RI=P(O2)-P(O2)=IR either with cooling or at room temperature. 391,392 Scheme 110. Adducts of carbenes and phosphorus.…”