Synthesis, properties, and multinuclear nuclear magnetic resonance (1H, 77Se, and 195Pt) studies on diselenoether complexes of palladium, platinum, and rhodium

Monodemethylation of a coordinated ditelluroether. Synthesis and x-ray structure of [{Pd(o-C6H4(TeMe)Te)I}4]

“…Their identity was subsequently established by an X-ray study. Conditions for a rational synthesis were established by heating a solution of the diiodide complex in DMSO-dg (16) 45,9 (7)* Te (2) 0.09101 (10) 0.23992 ( 6) 1.19741 (5) 41,2 (7)* Te(3) -0.25343 (10) 0.14142 (7) 1.04729 (6) 47,9 (8)* Te(4) 0.06675 (10) 0,12212 (7) 1.05689 ( 6)…”

Synthesis of an acyclic diselenodithioether ligand tethered with bulky substituents and its application to the synthesis of a distorted octahedral palladium(II) complex

“…Since the 77 Se NMR chemical shifts of dichloropalladium complexes coordinated with selenides have been reported to show down-field shifts of 130-300 ppm compared with those of the corresponding selenide ligands [23], there may be no or very weak interaction between the palladium and selenium atoms of 6 in solution.…”

Platinum metal ditelluroether complexes: synthesis, spectroscopic and structural studies of [M(L–L)2][PF6]2 [M = Pd or Pt, L–L = RTe(CH2)3TeR (R = Me or Ph) or C6H4(TeMe)2-o], [Rh(L–L)2Cl2]PF6, [Ru(L–L)2X2] (X = Cl, Br or I) and [Ru(L–L)2(PPh3)Cl]PF6

“…21 000 cm Ϫ1 which is consistent with trans geometric isomers (cis isomers have d-d bands at higher energy, often obscured by charge-transfer transitions). 18 The 1 H NMR spectra are complex revealing a number of invertomers are present. Poor solubility made recording the 125 Te-{ 1 H} NMR spectra difficult, but after very long accumulations the spectrum of [Rh{MeTe(CH 2 ) 3 TeMe} 2 Cl 2 ] ϩ showed a number of doublets with δ 250-300 and with the 1 J( 125 Te-103 Rh) couplings of 50-70 Hz.…”