405063-69-6Relevant academic research and scientific papers
Preparation, structural studies, and magnetic properties of coordination complexes of bimetallic arylplatinum compounds and pyridyl nitronyl nitroxide radicals
Gardinier, James R.,Clerac, Rodolphe,Gabbai, Francois P.
, p. 3453 - 3458 (2001)
Treatment of 1,3-C6H4I2 with Pt(PEt3)4 in toluene leads to the isolation of [1,3-(Pt(PEt3)2I)2 C6H4] (2). This complex has been characterized by 1H, 13C and 31P NMR and elemental analysis. The structure of 2 as well as that of [1,4-(Pt(PEt3)2I)2C6H4] (1) have been determined by single crystal X-ray analysis. As expected, the platinum centers of these derivatives adopt a square planar coordination geometry with the phosphine ligands in a trans arrangement. Treatment of compounds 1 and 2 with AgPF6 and subsequent addition of two equivalents of NITpPy (NITpPy = [2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide]) results in the formation of [1,4-(Pt(PEt3)2(NITpPY))2C6H4 ]2+[PF6]-2 (3) and [1,3-(Pt(PEt3)2(NITpPy))2C6H4 ]2+[PF6]-2 (4), respectively. Compounds 3 and 4 have been characterized by +ESI/TOF, IR, UV and elemental analysis. Their structures have been determined by X-ray crystallography which confirmed the coordination of a NITpPy ligand at each platinum center. As in 1 and 2, the platinum centers adopt a square planar coordination geometry with the phosphine ligands in a trans arrangement. As shown by EPR spectroscopy and SQUID magnetometry, intramolecular magnetic coupling of the coordinated NITpPy moieties does not occur.
