ISSN:
0044-2313
Keywords:
Phosphorus(V) nitride imide
;
deuterium compound of
;
synthesis of
;
x-ray, synchrotron and neutron structure determination
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Crystalline Phosphorus(V) Nitride Imide, HPN2 and DPN2, respectively, - Structure Determination with X-Ray, Synchrotron, and Neutron RadiationMicrocrystalline HPN2 resp. DPN2 was obtained by the reaction of P3N5 with NH3 resp. ND3 in high-pressure autoclaves under ammonothermal conditions (T = 550°C, p(NH3 resp. ND3) = 6 kbar) within 14 d.
Notes:
Mikrokristallines HPN2 bzw. DPN2 entsteht bei der Umsetzung von P3N5 mit NH3 bzw. ND3 in Hochdruckautoklaven unter ammonothermalen Bedingungen (T = 550°C, p(NH3 bzw. ND3) = 6 kbar) innerhalb von 14 Tagen.Die Struktur wurde an DPN2 über Beugungsexperimente mit Synchrotron- und Neutronenstrahlung am Pulver einschließlich der D-Lagen geklärt.DPN2: P212121 (Nr. 19), a = 4,6550(2) Å; b = 4,6591(2) Å; c = 7,0560(3) Å, Z = 4, Neutronenbeugung time-of-flight: RBragg (F2o) = 0,0184, 33 Reflexe (d = 1,626 Å - d = 5,278 Å) RBragg (F2o) = 0,0218, 93 Reflexe (d = 1,080 Å - d = 2,623 Å) DPN2 ist aus allseits eckenverknüpften Tetraedern PN4/2 aufgebaut, die ein dreidimensionales Gerüst bilden, wie es unverzerrt im “idealisierten” ß-Cristobalit vorliegt. Die Deuteronen sind geordnet an die Hälfte der N-Atome gebunden.The structure was solved on DPN2 by synchrotron and neutron diffraction data including the D-positions.DPN2: P212121 (Nr. 19), a = 4.6550(2) Å; b = 4.6591(2) Å; c = 7.0560(3) Å, Z = 4, Neutron diffraction time-of-flight: RBragg(F2o) = 0.0184, 33 reflections (d = 1.626 Å - d = 5.278 Å) RBragg(F2o) = 0.0218, 93 reflections (d = 1.080 Å - d = 2.623 Å) DPN2 contains corner-sharing tetrahedra PN4/2. These form a three-dimensional network as it is observed undistorted in “idealized” ß-cristobalite. The deuterons are bonded to one half of the nitrogen atoms in an ordered way.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19976230923
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