Isolation of Potassium Bis(amido)diazadipnictogenide Salts

Journal article

The reaction of Zintl phases K3As7 and K3P7 were investigated with 1-azido-4-bromobenzene (4-BrC6H4N3) and found to yield potassium salts of substituted diazadipnictogen rings (general molecular fragment {(RN)2Pn2}; Pn = P, As). In the case of the arsenic derivatives, amido­(imino)­arsenide persists in solution and bis­(amido)­diazadiarsenide persists in the solid state. These two species can be considered to share a monomer–dimer relationship, accessible by alteration between the solid and solution states, whereas in the case of K3P7, our crystallographic and spectroscopic studies are consistent with the formation of a bisamido­(bisimino)­diazadiphosphenide, the “dimeric” form, persisting in both the solid and solution phase. Subsequent reactivity studies with amido­(imino)­arsenide show that it can act as a source of amide anion, giving a carbonate and a thiourea derivative when investigated with CO2 and CS2, respectively.

Authors: Lister-Roberts, R; Mehta, M

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Chemical Society
• Journal: Organometallics
• Volume: 45
• Issue: 3
• Pages: 253-258
• Publication date: 2026-01-26
• Acceptance date: 2026-01-23
• DOI: 10.1021/acs.organomet.5c00493
• EISSN: 1520-6041
• ISSN: 0276-7333
• Language: English
• Keywords: Potassium; Isolation (microbiology); Sodium