13C chemical shift tensor in K2Pt(CN)4Br0.3 · 3H2O

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Abstract
Single crystal rotation spectra have been obtained for the 13C resonance in K2Pt(CN)4Br0.3 · 3H2O and the 13C chemical shift tensor determined. The principal values are (relative to the carboxyl carbon in CH3COOH): σ11=261±10 ppm (parallel to C–N bond), σ22 = −48±10 ppm (perpendicular to C–N bond and Pt–Pt chain), and σ33=−10±5 ppm (parallel to Pt–Pt direction). Since the 14N quadrupole interaction is of similar size to the 14N Zeeman interaction in this material, large effects of the 14N quadrupole interaction are observed on the 13C spectra.