Experimental Observation of the 16-Electron Molecules SPN, SNP, and Cyclic PSN
作者:Xiaoqing Zeng、Helmut Beckers、Helge Willner、Joseph S. Francisco
DOI:10.1002/anie.201108636
日期:2012.4.2
triatomic ring: Novel thiazylidynephosphane (SNP) was produced by either flash vacuum pyrolysis (ca. 1000 °C) or laser photolysis (193 nm) of SP(N3)3. Its photointerconversion to cyclic thiazaphosphirine (cyc‐PSN) and thiophosphoryl nitride (SPN) was found in Ar matrix at 16 K. Cyc‐PSN is the first experimentally observed 16‐electron cyclic triatomic molecule.
The kinetics of reactions (at 293 K) involving ground-state phosphorus atoms P(4S3/2) have been studied using resonance-fluorescence detection in a discharge–flow system for the first time. P atoms were formed by means of a discharge in helium with a trace of phosphorus trihalide. The rate constants k(cm3 molecule–1 s–1)(1σ) have been determined using pseudo-first-order kinetic analysis for the following
涉及基态磷原子P(4 S 3/2)的反应动力学(在293 K下)是首次在放电-流动系统中使用共振荧光检测进行了研究。通过氦气中微量三卤化磷的放电形成P原子。速率常数k(cm 3分子–1 s –1)(1σ)已通过以下一级反应的拟一级动力学分析确定:[图形省略] k的值与先前发表的研究。已经对导致差异的可能原因进行了调查。
The stability of PN and (PN)3. Ab initio calculations and matrix infrared investigations
作者:Reinhart Ahlrichs、Michael Bär、Harald S. Plitt、Hansgeorg Schnöckel
DOI:10.1016/0009-2614(89)85053-5
日期:1989.9
of (PN)3 are confirmed. The reaction energy ER for the reaction P2+N2⇌PN is determined from extended CPF calculations to be ER=+117±10 kJ/mol, which implies D0(PN)=6.2±0.1 eV. (PN)3 has a D3h planar ring equilibrium structure at the SCF level. Vibrational frequencies of (PN)3 are reported. SCF and CPF treatments show formation of the trimer, 3PN⇌(PN)3, to be exothermic by 334±60 kJ/mol.
P miteinander. α-P3N5 ist in nichtoxidierender Atmosphare bis etwa 800 °C stabil und unloslich in gangigen Losungsmitteln sowie in Sauren und Basen. Phosphorus(V) Nitride α-P3N5: Synthesis Starting from Tetraaminophosphonium Iodide and Crystal Structure Determination by Synchrotron Powder Diffraction Pure phosphorus(V) nitride α-P3N5 was synthesized by thermal condensation of tetraaminophosphonium
Phasenreines Phosphor(V)-nitrid α-P3N5 wurde durch thermische Kondensation von Tetraaminophosphoniumiodid [P(NH2)4]I bei 825 °C feinkristallin erhalten。Die Kristallstruktur wurde auf der Basis von Synchrotron-Rontgenpulverdaten (ESRF Grenoble, Beamline BM1) mit Direkten Methoden gelost und nach dem Rietveld-Verfahren verfeinert (α-P3N5, Cc, a = 814(4),073) = 916,005(5) pm, β = 115,809(1)°, Z = 4, 699