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Licensed Unlicensed Requires Authentication Published by De Gruyter June 2, 2014

Synthese und Kristallstruktur neuer 1,1,1,3,3,3-Hexaamino-1λ5,3λ5- diphosphazenium-Salze/ Synthesis and Crystal Structure of Novel 1,1,1,3,3,3-Hexaamino-1λ5,3λ5- diphosphazenium Salts

Kai Landskron and Wolfgang Schnick

1,1,1,3,3,3-Hexaamino-1λ5,3λ5-diphosphazenium bromide [(NH2)3PNP(NH2)3]Br, nitrate [(NH2)3PNP(NH2)3][NO3], and toluene-4-sulfonate [(NH2)3PNP(NH2)3][CH3C6H4SO3] have been prepared by anion exchange in aqueous solution. Single crystals were obtained from acetonitrile solutions in a temperature gradient between 60 °C and room temperature. The crystal structures were determined by single crystal X-ray methods at room temperature. ([(NH2)3PNP(NH2)3]Br: P1̄̄ , Z = 2, a = 596.2( 1 ),b = 744.5( 1), c = 1114.4( 1) pm, α = 108.78( 1), β = 104.18(1), γ = 90.64(1)°, R 1 = 0.048, wR2 = 0.104; [(NH2)3PNP(NH2)3][NO3]: P1̄̄, Z = 2, a = 550.9( 1), b = 796.3( 1), c = 1115.7( 1) pm, α = 94.45( 1), β= 99.55( 1), γ = 101,53( 1)°, R1 = 0.033, wR2 = 0.095; [(NH2)3PNP(NH2)3][CH3C6H4SO3]: P21/c, Z = 4, a = 804.1(1), b = 596.1(1), c = 3218.7(3) pm, β = 94.59(1)°, R1 = 0.052, wR2 = 0.136). In the solid the three salts consist of discrete [(NH2)3PNP(NH2)3]+ cations and their corresponding anions. The PN4 tetrahedra in [(NH2)3PNP(NH2)3]Br are staggered, while in [(NH2)3PNP(NH2)3][NO3] the eclipsed conformation is preferred. The PN4 tetrahedra of [(NH2)3PNP(NH2)3][CH3C6H4SO3] show gauche conformation.

Received: 1999-7-13
Published Online: 2014-6-2
Published in Print: 1999-11-1

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