Past magic-angle spinning

Salaiin J (2000) Cyclopropane Derivates and their Diverse Biological Activities. 207 1-67 Samoson A, Tuherm T, Past J, Reinhold A, Anupold T, Heinmaa 1 (2005) New Horizons for Magic-Angle Spinning NMR. 246 15-31 Sanz-Cervera JF, see Williams RM (2000) 209 97-173 Sartor V, see Astruc D (2000) 210 229-259 Sato S,see Furukawa N (1999) 205 89-129 Saudan C,see Balzani V (2003) 228 159-191 Sauvage J-P, see Dietrich-Buchecker C (2005) 249 in press... 

NMR has developed into a powerful analytical technique in the past decades, and has been used extensively in the characterization of a great number of chemical systems. Its extension to the study of surfaces, however, has been hampered by the need of large samples because of its poor sensitivity. On the other hand, the development of magic-angle-spinning NMR (MAS-NMR) and the extension of NMR to many nuclei besides... 

The solid-state NMR revolution of the past quarter century has had an enormous impact of the state of knowledge of silica and modified silicas. Si cross polarization (CP) with magic-angle spinning... 

A. Samoson, T. Tuherm,. Past, A. Reinhold, T. Anupold, I. Heimnaa, New horizons for magic-angle spinning NMR, Top. Curr. Chem. 246 (2004) 15—31. 

Stade el al. (S70) examined C-S-H preparations containing Al by Al magic angle NMR. At a Ca/Si ratio of 0.95, the aluminium was tetrahedrally coordinated this is also true of aluminous tobermorite (K34), which is of broadly similar composition and structure. At higher Ca/Si ratios, octahed- ral aluminium was also present. The fraction of the aluminium in octahedral coordination increased with Ca/Si ratio, and at Ca/Si =1.51 reached unity. The aluminium in pastes made from alite or from C3S with a little CjA was / also largely in octahedral coordination (S71). Electron spin resonance and Mossbauer examinations of C-S-H preparations containing Fe showed / that the iron was in octahedral coordination (S72). 

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