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1

Spectroscopic Studies of Platinum Complexes with 6-Mercaptopurine-9-D-riboside

Łakomska I.

Polish Journal of Chemistry

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2007

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Vol. 81, nr 10

1717-1724

EN

The reaction of 6-mercaptopurine-9-D-riboside (6-mpr) with K2PtCl4 and K2PtCl6 has been studied. The obtained complexes: Pt(6-mpr)26H2O(1a) andPtCl2(6-mpr)2CH3OH(2) have been characterized by elemental analysis, thermogravimetry, IR and multinuclear NMR (1H, 13C, 15N). Spectroscopic studies suggest that compounds (1a, 2) contain monodeprotonated ligands, which bind to platinum ion via S(6) and N(7). Far-IR spectra indicate the square-planar geometry for (1a) and octahedral geometry for (2).

2

Dimeric Silver(I) Complexes with Trimethylphosphine and Aliphatic Perfluorinated Carboxylates

Szłyk E., Łakomska I.

Polish Journal of Chemistry

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2002

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Vol. 76 / nr 10

1399-1403

EN

Silver(I) complexes with trimethylphosphine and perfluorinated carboxylates of general formula [{Ag(PMe3)2}2(_-OOCR)2], where R = CF3, C2F5, C3F7, C4F9, C7F15, have been prepared and characterized with IR, 1H, 13C, 19F, 31P NMR. Spectral analysis suggests four coordinated Ag(I) with two monodentate trimethylphosphine and bidentate carboxylates forming bridges between silver(I) ions. Thermal decomposition process was studied between 293-973 K in nitrogen. Decomposition proceeds in one exothermic stage corresponding to the elimination of perfluorinated carboxylate and trimethylphosphine. The final product was a mixture of metallic silver and carbon, formed between 473-633 K.

3

Spectroscopic and Thermal Studies of Silver(I) Complexes with Aliphatic Carboxylates and Triphenylphosphine

Szłyk E., Łakomska I., Surdykowski A., Goliński A.

Polish Journal of Chemistry

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1999

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Vol. 73, nr 11

1763-1769

EN

Results of spectral analysis are in favour of Ag(I) trigonal coordination with unidentately bonded triphenylphosphine and bidentate carboxylates, forming bridges between silver(I) ions. Thermal decomposition was studied in 293-973 K range in nitrogen. The multistage decomposition initiates with the detachment of carboxylates and is followed by triphenylphosphine dissociation. The final product is metallic silver, formed between 605-683 K.

4

Studies of Au(I) complexes with perfluorinated carboxylates and trimethylphosphine

Łakomska I., Grodzicki A., Szłyk E.

Polish Journal of Chemistry

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1998

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Vol. 72, nr 3

492-497

EN

Au(I) complexes of the type RCOOAuL, where R=C6F13, C7F15, C8F17, C9F19, C6F5, OOC(C3F6) and L - trimethylphosphine (Me3P) were synthesized and characterized by spectroscopic (IR, (13)C, (19)F, (31)P NMR) and thermal methods. Spectroscopic results favour two coordinated Au(I) with unidentate bonded trimethylphosphine and carboxylates, whereas in the case of hexafluoroglutarate a dimeric structure has been found. The mode of carboxylates binding was proposed basing on the chemical shift of COO group in (13)C NMR spectra and splitting of COO asymmetric and symmetric vibrations bands. Thermal decomposition proceeds in a multistage way that results in metallic gold. Decomposition temperatures and thermal stability of the studied complexes depend on the length of the perfluorinated chain.