226545-19-3Relevant academic research and scientific papers
Structural studies of ReO(V) mixed ligand [SNS][Cl] and [SNS][S] complexes
Pelecanou,Pirmettis,Papadopoulos,Raptopoulou,Terzis,Chiotellis,Stassinopoulou
, p. 142 - 151 (2008/10/08)
The synthesis, characterization and spectroscopic properties of four oxorhenium complexes, ReO[C2H5SCH2CH2N(CH 2CH2S)2]Cl (1), ReO[C2H5SCH2CH2N(CH 2CH2S)2][p-CH3OC6H 4S] (2), ReO[(C2H5)2NCH2CH 2N(CH2CH2S)2][p-CH3C 6H4S] (3), and ReO[C5H10NCH2CH2N(CH 2C(CH3)2S)2][C6H 5CH2S] (4) are reported. These neutral and lipophilic complexes are designed according to the '3+1' mixed ligand concept. X-ray crystallographic studies show that the coordination geometry around rhenium is distorted trigonal bipyramidal in complexes 2 and 3 and trigonally distorted square pyramidal in complex 4 (C15H24NO2S4Re (2), triclinic P1, a=9.610(2), b=9.628(2), c=11.791(2) A, α=108.307(8), β=67.735(6), γ=90.166(8)°, V=950.04 A3, Z=2; C17H29N2OS3Re (3), monoclinic P21/c, a=13.188(1), b=7.542(1), c=21.193(1) A, β=103.260(2)°, V=2051.74 A3, Z=4; C22H37N2OS3Re · 0.5C2H5OH (4), monoclinic P21/c, a=16.720(6), b=11.013(3), c=16.747(5) A, β=113.44(1)°, V=2829.08 A3, Z=4). Complete assignments of 1H and 13C NMR resonances were made for all complexes and compared to those of analogous technetium complexes. Complex 3 was also prepared at the tracer 186Re level.
