A correlation between isotropic ?Si chemical shifts and mean Si-0 bond length is presented for ten silicates containing sixfold coordinated silicon. The %i chemical shift data afford a measure of the cationic, neutral or anionic character of the octahedral silicon.
High-resolution solid-state 29Si and 31P NMR of silicon-phosphorous compounds containing six-coordinated silicon
✍ Scribed by I.L. Mudrakovskii; V.M. Mastikhin; V.P. Shmachkova; N.S. Kotsarenko
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 187 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Insrrrure of
Corolvsrs. Novosrbrrd 630090. USSR Recewed 10 June 1985 m final form 30 July 1985 '%I and "P chemical-shift data for SI(HPO,)~ Hz0 and SIP~O, new obIamrd rrom magic angle spmmng (MAS) NMR spew-a Accordmg IO Ihe '%I chemical shlfls ihe s~hcon aloms are swcoordlnaied in bolh compounds There arc IUO non-equl\alcnl sIllcon-oxygen octnhedn in the s~rucIure of SIP,O, but there 1s only one in .%(HPO,), H,O From "P MAS NMR spewa II IS posrlble IO dlshngulsh four dlfferrnl PO, terrahedra in .%P207 and IWO in SI(HPO,)~ H,O Addluonnl InformalIon on Ihe symmetry of the PO, letrahedra 1s ob[amed from broad 11nr "P NMR speewa
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