| Abstract: Three supramolecular compounds [M(4,4′-bipy)2(H2O)4]·(4,4′-bipy)2·(3,5-diaba)2·8H2O (M=Co
(1), Ni (2), Cd (3), 3,5-diaba=3,5-diaminobenzoic acid anion) were synthesized and characterized by elemental analysis, IR and X-ray crystal diffraction. All three crystals belong to monoclinic system with space group P2/c with a=0.938 9(2) nm, b=0.775 1(1) nm, c=3.928 4(6) nm, β=90.14(2)°, V=2.858 80(69)
nm3, Z=4, Dc=1.397 g·cm-3, F(000)=1 266, μ=0.380
mm-1, R1=0.034 9, wR2=0.082 9 for (1); a=0.938 3(2) nm, b=0.775 3(1) nm, c=3.921 8(6) nm, β=90.09(1)°, V=2.852 80(68)
nm3, Z=2, Dc=1.399 g·cm-3, F(000)=1 268, μ=0.420
mm-1, R1=0.036 6, wR2=0.080 5 for (2); and a=0.940 91(13) nm, b=0.778 85(11) nm, c=3.971 2(5) nm, β=90.10°, V=2.910 2(7)
nm3, Z=2, Dc=1.433 g·cm-3, F(000)=1 308, μ=0.454
mm-1, R=0.046 8, wR=0.096 4 for (3). 3,5-Diaba doesn′t involve in coordination to M(II). In the
[M(4,4′-bipy)2(H2O)4]2+ cation, the M(II) central ion is coordinated by two nitrogen atoms from two 4,4′-bipy molecules and four oxygen atoms from four coordinated water molecules to form an octahedral configuration. There exist uncoordinated 4,4′-bipy molecules in the compounds. The three-dimensional structures of the title supramolecular compounds are constructed by rich hydrogen bonds among
[M(4,4′-bipy)2(H2O)4]2+, uncoordinated 4,4′-bipy molecules and 3,5-diaba. CCDC: 287873,
1; 287874, 2; 287875, 3. |
