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Solid state NMR interaction parameters of oxygens linking titanium and silicon in crystalline cyclic titanodiphenylsiloxanes
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UNSPECIFIED (2000) Solid state NMR interaction parameters of oxygens linking titanium and silicon in crystalline cyclic titanodiphenylsiloxanes. SOLID STATE NUCLEAR MAGNETIC RESONANCE, 17 (1-4). pp. 2-14. ISSN 0926-2040.
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Abstract
O-17 static and magic angle spinning NMR spectra are reported from three: crystalline cyclic titanodiphenylsiloxanes at magnetic fields of 5.6, 14.1, and 17.6 T. These compounds allow the NMR parameters characteristic of Ti-O-Si environments to be determined. It appears from these data that the quadrupole interaction (C-o) of such environments is in the range of 3-3.5 MHz and that Si-O-TiO3 sites are less shifted than Si-O-TiO5. The relatively large isotropic chemical range observed suggests that for structurally and atomically disordered titanosilicate-based materials the very highest applied magnetic field may not produce the best O-17 solid state NMR spectra. There appears to he a correlation between the O-17 shift and T-O bondlength. (C) 2001 Academic Press.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | SOLID STATE NUCLEAR MAGNETIC RESONANCE | ||||
Publisher: | ACADEMIC PRESS INC | ||||
ISSN: | 0926-2040 | ||||
Official Date: | 2000 | ||||
Dates: |
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Volume: | 17 | ||||
Number: | 1-4 | ||||
Number of Pages: | 13 | ||||
Page Range: | pp. 2-14 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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