M. Fujita et al., ONE-DIMENSIONAL COORDINATE POLYMER INVOLVING HEPTACOORDINATE CADMIUM(II) IONS, Journal of the Chemical Society, Chemical Communications, (17), 1994, pp. 1977-1978
A one-dimensional polymer {[Cd-2(mu-bpe)(3)](NO3)(4)}(n) [1, bpe = 1,2
-bis(4-pyridyl)ethane] is prepared; its structure is strikingly charac
terised by heptacoordinate Cd-II ions as well as by a unique main fram
ework, ba two bpe units bridge two Cd-II ions giving a cyclic closed s
tructure which is linked to the next one by another bpe unit.