英语翻译
Two hexacoordinated dinuclear compounds [Mn(L1)(dca)]2(ClO4/PF6)2\2CH3OH (1/2) and two heptacoordinated
coordination polymers [Mn(L2)(dca)]n(ClO4/PF6)n (3/4) [L1 = N,N0-(bis-(pyridin-2-yl)benzylidene)-
1,3-propanediamine; L2 = N,N0-(bis-(pyridin-2-yl)benzylidene)diethylenetriamine; dca = dicyanamide]
are synthesized and characterized.Structures of 1–3 have been solved by X-ray diffraction measurements.
Each manganese(II) center in 1/2 is located in a distorted octahedral environment with an MnN6
chromophore coordinated by the four N atoms of L1 and two nitrile N atoms of bibridged l1,5 dca.Interestingly,
the coordination polymer 3 forms a 1D chain through single Mn–(NCNCN)–Mn units in which each
manganese(II) center adopts a pentagonal bipyramidal geometry with an MnN7 chromophore occupied
with five N atoms of L2 and two nitrile N atoms of monobridged l1,5 dca.Magnetic susceptibility measurements
of 1–3 in the 2–300 K temperature range reveal weak antiferromagnetic interactions