Easily electroreducible halogen-free germanium complexes with biologically active pyridines

Easily electroreducible halogen-free germanium complexes with biologically active pyridines Full article

Journal

Inorganica Chimica Acta
ISSN: 1873-3255 , E-ISSN: 0020-1693

Output data

Year: 2019, Volume: 495, Article number : 119007, Pages count : DOI: 10.1016/j.ica.2019.119007

Authors

Nikolaevskaya Elena N. ¹ , Shangin Pavel G. ¹ , Starikova Alyona A. ² , Jouikov Viatcheslav V. ³ , Egorov Mikhail P. ¹ , Syroeshkin Mikhail A. ¹

Affiliations

1	N.D. Zelinsky Institute of Organic Chemistry RAS, Moscow, Russia
2	Institute of Physical and Organic Chemistry at Southern Federal University, Rostov on Don, Russia
3	University of Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France

The green conversion of germanium dioxide into soluble non-halogenated forms suitable for further processing occurs smoothly and in high yields under the action of 3,5-di-tert-butylbenzene-1,2-diol in presence of biologically active N-donor ligands L. The formed hexacoordinated germanium catecholate complexes (DTBCat)2GeL2 (DTBCat = 3,5-di-tert-butylcatecholate, L = nicotinic acid, nicotinamide and isoniazid) 1–3 are air stable and soluble in common organic solvents. These new complexes are easily reducible at a glassy carbon electrode in DMF/0.1 M Bu4NBF4 at the cathodic potentials remarkably less negative than those of the reduction of parent non-coordinated N-donor ligands L; the corresponding anodic shifts for 1–3 are 0.598, 1.009 and 0.978 V, respectively. The ease of the electrochemical reduction and the energy of electron donation from the ligands L to germanium in 1–3 are in good agreement with DFT B3LYP/def2tzvp analysis and the stabilization energies of these germanium complexes.

Nikolaevskaya E.N. , Shangin P.G. , Starikova A.A. , Jouikov V.V. , Egorov M.P. , Syroeshkin M.A.
Easily electroreducible halogen-free germanium complexes with biologically active pyridines
Inorganica Chimica Acta. 2019. V.495. 119007 . DOI: 10.1016/j.ica.2019.119007 WOS Scopus OpenAlex

Web of science:	WOS:000481728800071
Scopus:	2-s2.0-85068557288
OpenAlex:	W2953607370

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OpenAlex	22
Scopus	21
Web of science	22