A carbon-13 <b>NMR </b>study of structurally characterized 1,3-dicarboxylato <span style="font-size:14.0pt;font-family:"Times New Roman";mso-fareast-font-family: "Times New Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-US; mso-bidi-language:AR-SA">tetraorganodistannoxanes</span>

Abstract

^{<span style="font-size:14.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="">13</span>}<span style="font-size:14.0pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">C NMR spectra of structurally characterized different types of 1,3-dicarboxylato tetraorganodistannoxanes have been reported. In the solid state spectra, separate resonances for carbonyl carbons have been observed for distinctly bonded carboxylate groups in the molecule whereas a single resonance has been observed in solution. Variable temperature ¹³C NMR data indicate that these molecules adopt a dynamic stereochemistry in solution.</span>