Liu Bin, Li Yi-Zhi, Zheng Li-Min
State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, People's Republic of China.
Inorg Chem. 2005 Oct 3;44(20):6921-3. doi: 10.1021/ic050821a.
This paper reports the first example of diruthenium phosphonate with kagomé structure, namely, [NH3(CH2)4NH3][Ru2(hedpH(0.5))2].2H2O (hedp = 1-hydroxyethylidenediphosphonate). The compound contains kagomé layers that are linked by very strong hydrogen bonds into a nanoscale kagomé structure. Ferromagnetic interactions are mediated between the paramagnetic diruthenium units.