Syntheses, IR spectra, thermal analyses, crystal structures, luminescence properties and DFT calculations of two silver–saccharinato complexes with 2-(dimethylaminomethyl)-3-hydroxypyridine and N-(2-aminoethyl)pyrrolidine
✍ Scribed by Veysel T. Yilmaz; Sevim Hamamci; Sedat Gumus; Orhan Büyükgüngör
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 187 KB
- Volume
- 794
- Category
- Article
- ISSN
- 0022-2860
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✦ Synopsis
Two new silver(I)-saccharinato (sac) complexes, [Ag(sac)(dmamhpy)] (1), [Ag 2 (sac) 2 (aeprd) 2 ] (2), (dmamhpyZ2-(dimethylaminomethyl)-3hydroxypyridine and aeprdZN-(2-aminoethyl)pyrrolidine, have been prepared and characterized by elemental analysis, IR spectroscopy, thermal analysis and single crystal X-ray diffraction. X-ray diffraction analyses reveal that complexes 1 and 2 have a dimeric structure containing threecoordinate silver(I) ions with a distorted T-shaped coordination of AgN 3 . The dimeric structure of complex 1 is achieved by aromatic p/p stacking interactions, while the dimeric structure of complex 2 was governed by ligand unsupported Ag/Ag interaction with Ag-Ag contact of 3.1444(3) A ˚. The dimeric units are further linked by hydrogen bonds and C-H/p interactions into a three-dimensional supramolecular network so that the structure of 1 has solvent accessible voids with a volume of 132.1 A ˚3. IR spectra and thermal analysis data for 1 and 2 are in agreement with the crystal structures. Complex 2 displays intense luminescence with emission maximum at 373 nm upon excitation at 210 nm. On the basis of experiment, both complexes were calculated by DFT-B3LYP/3-21G in GAUSSIAN 03.