X-ray Crystal Structures of [XF<sub>6</sub>][Sb<sub>2</sub>F<sub>11</sub>] (X = Cl, Br, I); <sup>35,37</sup>Cl, <sup>79,81</sup>Br, and <sup>127</sup>I NMR Studies and Electronic Structure Calculations of the XF<sub>6</sub><sup>+</sup> Cations
作者:John F. Lehmann、Gary J. Schrobilgen、Karl O. Christe、Andreas Kornath、Reijo J. Suontamo
DOI:10.1021/ic040015o
日期:2004.11.1
quadrupolar nuclei, (35,37)Cl, (79,81)Br, and (127)I, were determined for [ClF(6)][AsF(6)] (814 ppm), [BrF(6)][AsF(6)] (2080 ppm), and [IF(6)][Sb(3)F(16)] (3381 ppm) in anhydrous HF solution at 27 degrees C, and spin-inversion-recovery experiments were used to determine the T(1)-relaxation times of (35)Cl (1.32(3) s), (37)Cl (2.58(6) s), (79)Br (24.6(4) ms), (81)Br (35.4(5) ms), and (127)I (6.53(1) ms). Trends
已确定[XF(6)] [Sb(2)F(11)](X = Cl,Br,I)的单晶X射线结构,这是对包含XF( 6)(+)阳离子。这三种盐是同晶的,并且在单斜空间群P2(1)/ n中结晶,Z = 4:[ClF(6)] [Sb(2)F(11)],a = 11.824(2)A,b = 8.434(2)A,c = 12.088(2)A,beta = 97.783(6)度,V = 1194.3(4)A(3),R(1)= -0.0130在-130摄氏度; [BrF(6)] [Sb(2)F(11)],a = 11.931(2)A,b = 8.492(2)A,c = 12.103(2)A,β= 97.558(4)度,V在-130摄氏度下= 1215.5(4)A(3),R(1)= 0.0707; [IF(6)] [Sb(2)F(11)],a = 11.844(1)A,b = 8.617(1)A,c = 11.979(2)A,β=