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[{Re(6)Q(8)}(SO3)(6)](10-) (Q = S or Se): Facile Synthesis and Properties of the Most Highly Charged Octahedral Cluster Complexes and High Magnetic Relaxivity of Their Colloids with Gd3+ Ions

Title
[{Re(6)Q(8)}(SO3)(6)](10-) (Q = S or Se): Facile Synthesis and Properties of the Most Highly Charged Octahedral Cluster Complexes and High Magnetic Relaxivity of Their Colloids with Gd3+ Ions
Authors
Brylev, Konstantin A.Akhmadeev, Bulat S.Elistratova, Julia G.Nizameev, Irek R.Gubaidullin, Aidar T.Kholin, Kiri V.Kashnik, Ilya V.Kitamura, NoboruKim, Sung-JinMironov, Yuri V.Mustafina, Asiya R.
Ewha Authors
김성진
SCOPUS Author ID
김성진scopus
Issue Date
2019
Journal Title
INORGANIC CHEMISTRY
ISSN
0020-1669JCR Link

1520-510XJCR Link
Citation
INORGANIC CHEMISTRY vol. 58, no. 23, pp. 15889 - 15897
Publisher
AMER CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
New octahedral rhenium cluster complexes [{Re(6)Q(8)} (SO3)(6)](10-) (Q= S or Se) were synthesized starting from [{Re(6)Q(8)}(H2O)(4)(OH)(2)]center dot 12H(2)O. The complexes were crystallized as sodium salts and characterized by X-ray single-crystal diffraction and elemental analyses, IR, UV/vis and luminescence spectroscopies. Magnetic relaxation data demonstrate the complex formation of the cluster units with gadolinium ions. The analysis of the magnetic relaxation rates measured at various Gd:cluster ratios and different concentrations revealed the conversion of the aggregates (Gd-x[{Re6Se8}(SO3)(6)])(y))(n-) into a nanoparticulate form even at x = 1 and y >= 1. Thus, the self-assembly of the cluster units into the nanoparticles is greatly facilitated by counterion binding with sodium cations. The concentration conditions were optimized for the formation and hydrophilization of NaxGdy[{Re(6)Q(8)}(SO3)(6)]-based colloids with the magnetic relaxivity values of r(1(2)) = 21.0(24.1) and r(1(2)) = 25.9(29.8) mM(-1) s(-1) for the {Re6S8}(2+) and {Re6Se8}(2+) derivatives, respectively.
DOI
10.1021/acs.inorgchem.9b02346
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자연과학대학 > 화학·나노과학전공 > Journal papers
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