... figure Figure 1. Balakrishna et al. ... of cyclophosph(V/V)azanes of the type [R′ (H)N(E)P(μ-NR)] 2 (E = O, S, and Se; R′ = Cy, t Bu; and R = Cy, t Bu ... Syntheses The reaction of [ClP(μ-N t Bu)] 2 (1) with 4-hydroxybenzonitrile (4-CN-PhOH) (1:2 ratio) in the presence of Et 3 N as a ...