... KGaA, Weinheim. Issue. European Journal of Inorganic Chemistry. Volume 2012, Issue 7, pages 1114–1121, March 2012. Additional Information. How to Cite. ... The carbonyl carbon atoms were found in the 13 C{ 1 H} NMR spectra at characteristic chemical shifts. ...
[Choi, Dong-Sook; Huang, Shenlin; Huang, Mingsheng; Barnard, Thomas S.; Adams, Richard D.; Seminario, Jorge M.; Tour, James M. Journal of Organic Chemistry, 1998 , vol. 63, # 8 p. 2646 - 2655]