Two
new complexes [Cu(AQTC)
0.5(H
2O)
3]·3H
2O}
n (
1, H
4AQTC =
anthraquinone-1,4,5,8-tetracar- boxylic acid) and Cu[(Py)
2C(OH)
2]
2(H
2AQTC)·2H
2O (
2, (Py)
2CO = di-2-pyridyl ketone)
have been prepared and characterized by elemental analyses and IR spectroscopy.
X-ray crystallographic studies show that complex
1 crystallizes in monoclinic space group
C2/
m and complex
2 in
monoclinic space group
P2
1/
c. Complex
1 features a
1D chain structure by carboxyl oxygen atoms. Complex
2 displays a mononuclear structure and anions and cations are separated. What's interesting is that the
ligand of H
4AQTC with eight carboxyl oxygen atoms and two quinone
oxygen atoms does not directly coordinate with metals, and only exist as a
counter-anion in complex
2. Three-dimensional structures of two
complexes are formed by intermolecular interactions. The thermogravimetric
analyses of two complexes are investigated. The luminescent properties of complex
1 are investigated as well.