Fibrous Red Phosphorus.

Abstract

Structure D 2000Fibrous Red Phosphorus. -Fibrous red phosphorus is prepared from amorphous red phosphorus by sublimation with iodine (evacuated silica tubes, 590-570°C, several days). The samples are characterized by single crystal XRD and TEM and the previously assumed structure is confirmed. This form of red phosphorus crystallizes in the triclinic space group P1. The crystal structure consists of tubes with pentagonal cross section, which in turn are a regular sequence of three different building units. The subunits are cages of eight or nine P atoms and dumbbells of two P atoms. The fibrous type of crystalline red phosphorus shows strong structural resemblance to Hittorf's phosphorus. -(RUCK*, M.; HOPPE, D.; WAHL, B.; SIMON, P.; WANG, Y.; SEIFERT, G.; Angew. Chem., Int. Ed. 44 (2005) 46, 7616-7619; Inst. Anorg.

What's the gap? A possible strategy for advancing theory, and an appeal for experimental structure data to drive that advance

“…Recently the crystal structure of RP has been reported. 51 We have carried out an HSE06 single point calculation using this structure and found a predicted band gap of 1.97 eV, in excellent agreement with experimental values of 1.9 eV due to Roshith 48 and 2.12 eV due to Ji. 52 The above results for fullerite and elemental phosphorus suggest that HSE06 is a reliable functional for predicting band gap in solid materials, if it does not need to be relied upon to rst predict the structure.…”

“…The second allotrope of phosphorus that has received attention for its layered structure is RP. 51 Collected in Table 2 are experimental and theoretical values for the band gap in RP. The story mirrors that for BP.…”

Self-Standing Hierarchical P/CNTs@rGO with Unprecedented Capacity and Stability for Lithium and Sodium Storage

“…Even adding structural stability agents, nearly 50% loss over 100 cycles was still observed with ball-milled P/C composites. 21 The unsatisfactory performance is attributed to the intrinsic polymeric structural feature of red P, which easily forms large agglomerates by interparticle adhesion during ball milling, 22,23 as shown in Scheme 1A. The large agglomerates, which have a limited contact area between P and conducting carbon additives, still suffer from low conductivity and structural pulverization, leading to the low capacity and poor cycling performance.…”

Festkörperchemie 2005

“…Dieses Allotrop hat groge strukturelle Ahnlichkeit mit dem Hittorfschen Phosphor, da es ebenfalls aus Rbhren mit pentagonalem Querschnitt aufgebaut ist, die sich wiederum aus acht-und neunatomigen Kafigen sowie P,-Hanteln in einer regularen Abfolge zusarnmenset~en.~" Eine einfache Methode zur Synthese von Phosphanylphosphonium-. ben Arbeitsgruppe gelang zudem die (2 71 Nachrichten aus der Chemie 1 54 …”

“…Der All ,--Cluster wurde mit einem Halogenid-Ion ver-Nachrichten aus der Chemie 1 54 Nach lonisation \'on gasformgem TIF konnen die Kationen TIF', TIF", TI' und TI" im Massenspektrometer nachgewiesen werden.'" TIF' ist extrem schwach gebunden: TIF" ist nur metastabil bezuglich Dissoziation in TI' und F'.…”