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Eine neue Synthese und die Kristallstruktur von Hexaphenyl‐cyclo‐triphosphazen, [NPPh 2 ] 3 · THF
Author(s) -
Dietrich Armin,
Neumüller Bernhard,
Dehnicke Kurt
Publication year - 2000
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200010)626:10<2035::aid-zaac2035>3.0.co;2-v
Subject(s) - crystal structure , chemistry , stereochemistry , crystallography , dihedral angle , molecule , hydrogen bond , organic chemistry
A New Synthesis and the Crystal Structure of Hexaphenyl‐cyclo‐triphosphazene, [NPPh 2 ] 3 · THF [NPPh 2 ] 3 · THF ( 1 · THF) has been prepared from KNPPh 3 in THF solution in the presence of MoO 3 and 18‐crown‐6. According to the crystal structure determination all structural parameters are similar to known symmetric substituted cyclo‐triphosphazenes. The dihedral angles of the phenyl groups with the “best plane” P 3 N 3 lie between 50 and 67°. 1 · THF: Space group P 1, Z = 2, lattice dimensions at –80 °C: a = 1146.5(1), b = 1360.5(1), c = 1382.9(1) pm, α = 108.06(1)°, β = 103.32(1)°, γ = 112.19(1)°, R 1 = 0.0441.