Chemistry Letters, Vol.34, No.7, 1018-1019, 2005
Formation of the dianion and the dimer of 9,10-distannaanthracene
The reaction of 9,10-diiodo-9,10-dihydro-9,10-distannaan-thracene with lithium naphthalenide (2.5 equiv.) or excess lithium gave the 9,10-distannaanthracene dimer or the 9,10-distannaanthracene dianion. The formation of the latter was evidenced by NMR spectral analysis and a trapping experiment.