Structure determination of unusual mixed-ligand complexes [LOMeInTp]X (X = [InCl4]−, [PF6]−) in solution by 2D1H NOESY NMR spectroscopy

Nitrogen Tripod Ligand/Oxygen Tripod Ligand Indium(III) Complexes: The First Structurally Characterized Trofimenko−Kläui Complex [η5-(C5H5)Co{P(OCH3)2(O)}3InHB(pz)3][InCl4] (pz = pyrazol-1-yl)

“…At 223 K, a doubling of the number of signals was observed. These well-separated signals were indicative of the presence of three species, which we assign as the heteroleptic complex [L OEt PbTp] (9) and the homoleptic complexes [(L OEt ) 2 Pb] (10) and [Tp 2 Pb] (11). This hypothesis was supported by the relevant intensity ratios.…”

“…Ϫ Conductivity measurements were performed using a Schott CG 851 conductometer. Ϫ The sodium salt of 1 [13] and compounds 1a, [9] 1b, [14] 3a, [9] 3b, [9] 4, [9] 5, [9] 6, [5] 7, [4] 8, [15] 10, [16] and 11 [4] were prepared according to published procedures. The thallium salt 2a was prepared from KTp and Tl 2 CO 3 according to procedures for analogous TlTp compounds.…”

“…[L Et InTp*] ϩ from an equimolar mixture of [In(L Et ) 2 ] ϩ and [In(Tp*) 2 ] ϩ . We have recently found [9] that the coordination of an oxygen ligand and a nitrogen ligand to the same indium ion can be proven by 2D 1 H NOESY NMR spectroscopy. In this way, one can identify [L R InTp] ϩ and [L R InTp*] ϩ and exclude fast ligand exchange between homoleptic and heteroleptic complexes.…”

“…In this way, one can identify [L R InTp] ϩ and [L R InTp*] ϩ and exclude fast ligand exchange between homoleptic and heteroleptic complexes. [9] …”