Crystal and molecular structure of P(C6H5)(5) center dot 0.5 THF

Muller G; Bildmann UJ

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Crystal and molecular structure of P(C6H5)(5) center dot 0.5 THF

机译：P（C6H5）（5）中心点0.5 THF的晶体和分子结构

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Pentaphenylphosphorus crystallizes from tetrahydrofuran (THF) as P(C6H5)(5).0.5 THF (triclinic space group: P1, a 10.095(4), b = 10.252(3), c = 12.725(3) A, alpha = 71.21(l), beta = 76.98(3), gamma = 87.12(1)degrees, Z = 2). Its molecular structure is an almost perfect trigonal bipyramid with significantly longer axial than equatorial P-C-Ph bonds (P-C-ax 1.982(2)/1.979(2), P-C-eq 1.853(2)/1.845(2)/1.847(2) A). It differs from the well established structure of solvent-free P(C6H5)(5) (P. J. Wheatley, J. Chem. Soc. 2206 (1964)) in the relative orientation of the phenyl rings with respect to each other (axial rings) and with respect to the equatorial PC3 plane (equatorial rings) but not in the trigonal-bipyramidal (tbp) geometry at phosphorus. Differences in the geometry around the central atom had been found previously for Sb(C6H5)(5) (square pyramid) and Sb(C6H5)(5) . 0.5C(6)H(12) (tbp) but not in As(C6H5)(5) and As(C6H5)(5) . 0.5 C6H12 (both tbp).

机译：五苯基磷从四氢呋喃（THF）中结晶为P（C6H5）（5）.0.5 THF（三斜链空间群：P1，10.095（4），b = 10.252（3），c = 12.725（3）A，alpha = 71.21（ 1），β= 76.98（3），伽马= 87.12（1）度，Z = 2）。它的分子结构是几乎完美的三角双锥，其轴向长度明显长于赤道PC-Ph键（PC-ax 1.982（2）/1.979（2），PC-eq 1.853（2）/1.845（2）/1.847（2）一种）。它与无溶剂的P（C6H5）（5）（PJ Wheatley，J.Chem.Soc.2206（1964））的成熟结构不同之处在于苯环相对于彼此的相对取向（轴向环）相对于赤道PC3平面（赤道环），但在磷处不是三角双锥体（tbp）几何形状。先前已发现Sb（C6H5）（5）（方锥）和Sb（C6H5）（5）围绕中心原子的几何结构存在差异。 0.5C（6）H（12）（tbp），但不在As（C6H5）（5）和As（C6H5）（5）中。 0.5 C6H12（均为tbp）。

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《Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences》 |2004年第12期|共4页
作者
Muller G; Bildmann UJ;
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正文语种 eng
中图分类化学;
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phosphorus; structural chemistry; pentacoordination; structure determination; PENTAARYLBISMUTH COMPOUNDS; PENTAPHENYL-ANTIMONY; CELL;

机译：磷;结构化学;五配位;结构测定;五溴联苯化合物;对苯二甲醛;细胞;

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Crystal and molecular structure of P(C6H5)(5) center dot 0.5 THF

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