Wydział Chemii

Patrycja Wytrych

Józef Utko

Tadeusz Lis

Łukasz John

2021

Acta Crystallographica Section C: Structural Chemistry

77

522-528

10.1107/s2053229621008160

Naukowa

Angielski

Artykuł

The synthesis and structural characterization of two new potassium tri­phenyl­sil­oxides, namely, aqua(­propan-2-o­l)hexa­kis­(tri­phenyl­silanolato)hexa­po­tas­sium toluene disolvate, [K₆(C₁₈H₁₅OSi)₆(C₃H₈O)(H₂O)]·2C₇H₈, and di­aqua­hexa­kis­(tri­phenyl­silanolato)hexa­potassium, [K₆(C₁₈H₁₅OSi)₆(H₂O)₂], are reported. Both com­pounds crystallize in the triclinic space group P. 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 Ph₃SiO⁻ 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.

potassium sil¬oxide, crystal structure, alkali metal sil¬oxide, triphenylsilanol, triphenylsiloxide, reverse micelles, alkali metal polyoxometalate, POM

http://dx.doi.org/10.1107/S2053229621008160