当前位置： SCI文献检索 > JOURNAL OF INORGANIC BIOCHEMISTRY期刊下所有文献 > Synthesis, characterization and crystal structure of novel mononuclear peroxotungsten(VI) complexes. Insulinomimetic activity of W(VI) and Nb(V) peroxo complexes.

Synthesis, characterization and crystal structure of novel mononuclear peroxotungsten(VI) complexes. Insulinomimetic activity of W(VI) and Nb(V) peroxo complexes.

Abstract：

:Two new mononuclear peroxo complexes of tungsten of the formula (gu)(2)[WO(2)(O(2))(2)] (1) and (gu)[WO(O(2))(2)(quin-2-c)] (2a) (where gu(+)=guanidinium ion, CN(3)H(6)(+) and quin-2-c=quinoline-2-carboxylate ion) have been synthesized and characterized by elemental analysis, infrared, Raman, UV-visible and (1)H NMR spectroscopies. The crystal structure of (gu)[WO(O(2))(2)(quin-2-c)].H(2)O (2b) determined by X-ray diffraction indicates that the side-on peroxo groups and the bidentate quinaldate ligand bind the W(VI) centre leading to an hepta coordination mode. The guanidinium ion occurring as a counterion and the hydrogen-bound interactions stabilize the complexes. The in vitro insulin-mimetic effect of the complexes has been evaluated by the inhibitory effect on free fatty acid release in isolated fat adipocytes treated with epinephrine. Moreover the niobate analogues, synthesized and characterized previously, (gu)(3)[Nb(O(2))(4)] and (gu)(2)[Nb(O(2))(3)(quin-2-c)].H(2)O have been tested for the insulin-like activity.

journal_name

J Inorg Biochem

journal_title

Journal of inorganic biochemistry

authors

Maniatakou A,Karaliota S,Mavri M,Raptopoulou C,Terzis A,Karaliota A

doi

10.1016/j.jinorgbio.2009.03.001

subject

Has Abstract

pub_date

2009-05-01 00:00:00

pages

859-68

issue

5

eissn

0162-0134

issn

1873-3344

pii

S0162-0134(09)00051-8

journal_volume

103

pub_type

杂志文章

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