The submillimeter spectrum of the CrP radical (X⁴Σ⁻) has been recorded using direct absorption techniques in the frequency range 347-545 GHz. This study is the first pure rotational measurement of a metal-phosphide species. CrP was synthesized in an AC discharge in argon by the reaction of gas-phase chromium with phosphorus vapor, produced by a novel source. Twelve rotational transitions of CrP were measured, each consisting of four fine structure components. The spectra were analyzed using a Hund’s case (b) Hamiltonian, and rotational, spin-spin, and spin-rotation constants determined. The 3d phosphides appear to resemble the corresponding nitrides in terms of bonding.

所述CRP自由基的亚毫米光谱（X ⁴ Σ ^- ）在频率范围347-545 GHz的使用直接吸收技术已被记录。这项研究是首次对金属磷化物进行纯旋转测量。通过气相铬与磷蒸气的反应，通过一种新型来源产生的Cr在氩气的交流放电中合成了CrP。测量了CrP的十二个旋转跃迁，每个跃迁均由四个精细结构组成。使用Hund情形（b）哈密顿量分析光谱，并确定旋转常数，自旋旋转常数和自旋旋转常数。就键合而言，3d磷化物似乎类似于相应的氮化物。