Gellhaar Jorit, Knapp Carsten
Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg i. Br., Germany.
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):o2546. doi: 10.1107/S1600536811035057. Epub 2011 Sep 3.
In the title compound, (Ph(3)P)(2)N·Cl-H-Cl or C(36)H(30)NP(2) (+)·Cl(2)H(-), the H atom of the Cl-H-Cl anion and the N atom of the (Ph(3)P)(2)N cation are located on a twofold axis, yielding overall symmetry 2 for both the cation and the anion. The central P-N-P angle [144.12 (13)°] of the cation is in the expected range and indicates only weak cation-anion inter-actions. The almost linear Cl-H-Cl anion is a rare example of a symmetric hydrogen bridge in a hydrogen dichloride anion. The Cl⋯Cl distance and two equal Cl-H bonds are typical of such a symmetric hydrogen dichloride anion.
在标题化合物[(Ph₃P)₂N]⁺·[Cl-H-Cl]⁻或C₃₆H₃₀NP₂⁺·Cl₂H⁻中，[Cl-H-Cl]⁻阴离子的H原子和[(Ph₃P)₂N]⁺阳离子的N原子位于二重轴上，阳离子和阴离子的整体对称性均为2。阳离子的中心P-N-P角[144.12 (13)°]在预期范围内，仅表明阳离子与阴离子之间存在弱相互作用。近乎线性的[Cl-H-Cl]⁻阴离子是二氯化氢阴离子中对称氢桥的一个罕见例子。Cl⋯Cl距离和两个相等的Cl-H键是这种对称二氯化氢阴离子的典型特征。
