1-D polymer containing the [Ru-N-Ru] mu-nitrido moiety: crystal structure and magnetic properties of {[Cu(en)(2)](3)[Ru2N(CN)(10)]center dot ClO4}(n) (en=1,2-diaminoethane)

A novel (mu-nitrido-diruthenium)-bridged 1-D coordination polymer was formed from reaction of K-5[Ru2N(CN)10] with [Cu(en)(2)](ClO4)(2); a similar reaction with [Cu(pn)(2)][(ClO4)(2)] (pn = 1,3- diaminopropane) gave {[Cu(pn)(2)](5)[Ru2N(CN)(10)](2)} as a discrete molecular compound; variable temperature susceptibility measurements show that there is a weak ferromagnetic interaction between the Cu(II) ions in 1-D polymer.