ISSN 1070-3284, Russian Journal of Coordination Chemistry, 2006, Vol. 32, No. 7, pp. 504–510. © Pleiades Publishing, Inc., 2006.
pharmacological activities, such as
tibacterial, antitumor, antiphlogistic, and adjusting the
metabolism of organism, etc. [5–7]. It is widely used in
the separation and analysis of metal ions as well .
The quantitative structure activity relationship
(QSAR) shows that planar molecules can selectively
be intercalated in certain sites in nucleic acid, whose
complexes can be used as the structural
probes of nu-
cleic acid to expose the mechanism of metal–enzyme
acting on nucleic acid . 8-OHQ gives a nearly pla-
nar structure with conjugation, and its complexes
can have potential applications as mentioned above.
] · CH
OH complex was synthe-
sized through a special method, for which the charac-
teristic results of IR spectra, elemental analysis, and
crystal structure are reported.
Reagents. Taurine was BR (Biochemical Reagent).
Manganese acetate, potassium hydroxide, 8-hydroxy-
quinoline, methanol, and other solvents were AR
(Analysis Reagent) grade and were used without fur-
Preparation of the Schiff base ligand. Taurine
(0.01 mol) and potassium hydroxide were added to
methanol (15 ml) to make a pellucid solution. At 50°C,
it was slowly dripped into the methanol solution (15 ml)
containing 2-thenyl formaldehyde (0.01 mol). The mix-
ture was stirred for 0.5 h to give a silvery white and
precipitate. The product was collected by
filtration, washed several times with anhydrous ethanol,
and dried under vacuum. Thus, the taurine-2-thenyl
formaldehyde Schiff base (TTFS, C
K · H
ligand was produced. The yield of TTFS was 88.6%.
IR data (KBr pellets; ν, cm
): 3438 (O–H), 1640
(C=N), 1044.3, 1165.2, 1186.7 (SO
Preparation of the complex. TTFS (0.5 mmol) in
MeOH (15 ml) was dripped into the solution of
O (the same molar ratio with the
anterior) in MeOH (15 ml). The reaction mixture was
stirred at 50°C. Two hours later, 8-OHQ (0.5 mmol in
Anal. calcd (%): C, 30.50; H, 3.62; N, 5.11; S, 19.00
K · H
found (%): C, 30.44; H, 3.58; N, 5.18; S, 19.53.
Crystal Structure and Thermodecomposition Kinetics
of a Three-Dimensional Supramolecular Mn Complex
L. R. Yang, C. F. Bi, Y. H. Fan, S. Q. Liu, F. Guo, and X. K. Ai
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, China
Received July 4, 2005
Abstract—A three-dimensional supramolecular complex, [Mn(8-OHQ)
] · CH
OH (8-OHQ is 8-hydroxy-
, was synthesized in methanol, and its crystal structure was determined by X-ray
crystallography. The crystals are triclinic, space group P P , a = 10.823(2) Å, b = 13.222(3) Å, c = 17.283(3) Å,
α = 90.03(3)°, β = 93.15(3)°, γ = 92.58(3)°, V = 2467.0(8) Å
, Z = 4, F(000) = 1072, ρ = 1.399 g/cm
, µ =
. Hydrogen bonds and intermolecular interactions, which are observed in the complex, stabilize its
structure. The thermal decomposition kinetics of the complex was investigated under nonisothermal conditions
using the Achar differential method and the Coats–Redfern integral method.
The text was submitted by the authors in English.