๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Anion recognition by 1,3-disiloxane-1,1,3,3-tetraols in organic solvents

โœ Scribed by Shin-ichi Kondo; Natsumi Okada; Ryoji Tanaka; Masaki Yamamura; Masafumi Unno

Publisher
Elsevier Science
Year
2009
Tongue
French
Weight
540 KB
Volume
50
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

receptor a b s t r a c t Anion recognition by 1,3-disiloxane-1,1,3,3-tetraols has been elucidated by 1 H NMR titrations and ESI-MS in organic solvents. The association constants of the receptors for halide anions are larger than those of silanediol and 1,3-disiloxane-1,3-diol due to the cooperative hydrogen bonds by four silanol hydroxy groups of 1,3-disiloxane-1,1,3,3-tetraols.

๐Ÿ“œ SIMILAR VOLUMES

Synthesis of poly[1,1-bis(trimethylsilyl
Synthesis of poly[1,1-bis(trimethylsilyloxy)-3,3,5,5-tetramethyltrisiloxane] by anionic ring-opening polymerization of 1,1-bis(trimethylsilyloxy)-3,3,5,5-tetramethylcyclotrisiloxane
โœ Guoping Cai; William P. Weber ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 61 KB ๐Ÿ‘ 1 views

Poly[1,1-bis(trimethylsilyloxy)-3,3,5,5-tetramethyltrisiloxane], the first linear polysiloxane in which each third silicon atom of the polymer backbone is a tetrafunctional SiO 2 (Q) unit, has been prepared by anionic ring-opening polymerization of 1,1-bis(trimethylsilyloxy)-3,3,5,5-tetramethylcyclo

Hindered rotation in 1,3-diphenyl allyl
Hindered rotation in 1,3-diphenyl allyl anion
โœ R.J. Bushby; G.J. Ferber ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 107 KB

1 H n.m.r. studies of substituted 1,3-diphenyl ally1 anions' showed that phenyl rotation is on the n.m.r. time scale but the spectra were so complex that it was difficult to obtain rates. In the proton decoupled13C n.m.r. spectra no such problems exist. The sodium salt of trans,trans-1,3-diphenyl a