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Silanediols Derived from Silanetriols. X‐ray Crystal Structures of (2,4,6‐Me 3 C 6 H 2 )N(SiMe 3 )Si(OSiMe 3 )(OH) 2 and (2,4,6‐Me 3 C 6 H 2 )N(SiMe 3 )Si(OSiMe 2 R)(OH) 2 [R = CH 2 (2‐NH 2 ‐3,5‐Me 2 C 6 H 2 )]
Author(s) -
Murugavel Ramaswamy,
Voigt Andreas,
Chandrasekhar Vadapalli,
Roesky Herbert W.,
Schmidt HansGeorg,
Noltemeyer Mathias
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290405
Subject(s) - chemistry , crystal structure , hexane , crystallography , x ray crystallography , hydrogen bond , solid state , x ray , intermolecular force , nuclear magnetic resonance spectroscopy , ring (chemistry) , stereochemistry , molecule , diffraction , organic chemistry , physics , quantum mechanics , optics
The silanediols RN(SiMe 3 )Si(OSiMe 3 )(OH) 2 (R = 2,4,6‐Me 3 C 6 H 2 4 , 2,6‐Me 2 C 6 H 3 5 , and 2,6‐ i Pr 2 C 6 H 3 6 ) were prepared by the reactions of the respective silanetriols RN(SiMe 3 )‐Si(OH) 3 1 – 3 with SiMe 3 Cl in THF/hexane. Silanetriol 1 in CH 2 Cl 2 /hexane solution converts over a period of 4 weeks into the silanediol (2,4,6‐Me 3 C 6 H 2 )N(SiMe 3 )Si(OSiMe 2 R)‐(OH) 2 [R = CH 2 (2‐NH 2 ‐3,5‐Me 2 C 6 H 2 )] ( 7 ). Compounds 4 – 7 were characterized by means of mass, IR and NMR ( 1 H and 29 Si) spectroscopy. Additionally, the molecular structures of 4 and 7 were determined by single‐crystal X‐ray diffraction studies. Compound 4 forms O H…O hydrogen‐bonded tetramers in the solid state. A nine‐membered ring formed by an intermolecular OH…N hydrogen bond is found in the solid‐state structure of 7 .