Wytrych Patrycja, Utko Józef, Lis Tadeusz, John Łukasz
Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
Acta Crystallogr C Struct Chem. 2021 Sep 1;77(Pt 9):522-528. doi: 10.1107/S2053229621008160. Epub 2021 Aug 17.
The synthesis and structural characterization of two new potassium triphenylsiloxides, namely, aqua(propan-2-ol)hexakis(triphenylsilanolato)hexapotassium toluene disolvate, [K(CHOSi)(CHO)(HO)]·2CH, and diaquahexakis(triphenylsilanolato)hexapotassium, [K(CHOSi)(HO)], are reported. Both compounds crystallize in the triclinic space group P-1. The structure in each case resembles an alkali metal polyoxometalate-like structure, in which electrostatic interactions are observed in the metal-oxygen core. Furthermore, both compounds also resemble a reverse micelles-like architecture, in which the hydrophilic core is enclosed in a hydrophobic shell. The cores of the complexes are flanked by hydrophobic aromatic rings derived from PhSiO anions, where intramolecular π-interactions between the aromatic rings and potassium cations stabilize the cores of the crystals. Moreover, in both structures, the presence of hydrogen bonds is observed; until now, no crystal structures have been described containing K atoms and triphenylsiloxide molecules in which the presence of hydrogen bonds was confirmed. Thus, these coordination entities could be considered as attractive reagents for further synthetic protocols towards heterometallic complexes.
报道了两种新型三苯基硅酸钾的合成与结构表征，即水合（丙 - 2 - 醇）六（三苯基硅醇根）六钾甲苯二溶剂合物，[K(CHOSi)(CHO)(HO)]·2CH，以及二水合六（三苯基硅醇根）六钾，[K(CHOSi)(HO)]。两种化合物均结晶于三斜空间群P - 1。在每种情况下，其结构类似于碱金属多金属氧酸盐类结构，其中在金属 - 氧核心中观察到静电相互作用。此外，两种化合物还类似于反胶束状结构，其中亲水核心被包裹在疏水壳中。配合物的核心两侧是源自PhSiO阴离子的疏水芳环，其中芳环与钾阳离子之间的分子内π相互作用稳定了晶体的核心。此外，在两种结构中均观察到氢键的存在；到目前为止，尚未描述含有K原子和三苯基硅氧化物分子且已证实存在氢键的晶体结构。因此，这些配位实体可被视为用于进一步合成异金属配合物的有吸引力的试剂。
