Three-dimensional H-bonded supramolecular complexes. Synthesis and crystalstructures of [Mn(mu-bpe)(H2O)(4)](ClO4)(2)center dot 4(bpe)center dot 2H(2)O and [M(mu-bpe)(bpe)(2)(H2O)(2)](ClO4)(2)center dot bpe center dot H2O, where M = Zn, Ni and bpe = 1,2-bis(4-pyridyl)ethane

The reaction of Mn(II), Zn(II), and Ni(II) perchlorate with 1,2-bis(4-pyrid yl)ethane (bpe) was studied and the products were characterized by IR spect roscopy and X-ray diffraction methods. The zinc and nickel compounds are is omorphous with a metal-bpe molar ratio of 1:4, while the manganese compound is quite different with a Mn-bpe ratio of 1:5. [Mn(mu-bpe)(H2O)(4)](ClO4)( 2). 4(bpe). 2H(2)O (1) is monoclinic, C2/c, with a = 30.141(7), b = 13.993( 4), c = 19.765(4) A, beta = 129.41(1)degrees, and R = 0.059. The Mn atom is located on an inversion centre and forms an infinite chain with the bridge d bpe ligand. The four other bpe molecules are hydrogen-bonded to the aqua ligands and form an extensive H-bonded interpenetrating 3D network. The bon ds Mn-N = 2.316(3) A and Mn-OH, = 2.148(4) and 2.178(3) Angstrom. [Zn(mu-bp e)(bpe)(2)(H2O)(2)](ClO4)(2)-bpe . H2O (2) cIystallized in theP2(i)/c space group, with a = 14.609(4), b = 21.164(5), c = 16.482(5) Angstrom, beta = 1 14.69(2)degrees, and R = 0.058. For [Ni(mu-bpe)(bpe)(2)(H2O)(2)](ClO4)(2). bpe . H2O (3), a = 14.511(6), b = 21.216(7), c = 16.467(7) A, beta = 114.76 (3)degrees and R = 0.065. The aqua ligands are located trans to each other. The bridged bpe ligands form an infinite chain with the metal atoms. Two o ther terminal bpe ligands are coordinated to the metal in trans positions t o each other. These ligands form H-bonds: with the aqua ligands of other ch ains resulting in an H-bonded 3D network. The Zn-N distances vary from 2.15 1(3) to 2.185(4) A while the Ni-N: bonds are between 2.098(10) and 2.126(11 ) Angstrom. The bonds Zn-OH2 = 2.125(4), 2.161(4) Angstrom and Ni-OH2 = 2.0 77(11), 2110(11) Angstrom.