Syntheses of thiopyrylium-tungsten complexes

Abstract

Hexacarbonyltungsten reacts with 2,4,6-triphenylthiopyrylium perchlorate and 2,6-dianisyl-4-phenylthiopyrylium perchlorate in diglyme to afford cationic thiopyrylium salts, 2,4,6-[H 2 (C 6 H 5 ) 3 C 5 SW(CO) 3 ] ? ClO 4 -and 2,6,4-[H 2 (C 6 H 5 )(C 6 H 4 OCH 3 ) 2 C 5 SW(CO) 3 ] ? ClO 4 -. Both compounds were characterized by physico-chemical and spectroscopic methods. The HMQC, DEPT-45, and COSY experiments were used to assign carbon and proton signals in the 1 H and 13 C NMR spectra.

NMR spectroscopic investigations of transition metal complexes in organometallic and bioinorganic chemistry

“…This indicates that DEPT spectroscopy has become a promising method for characterizing transition metal complexes. [138][139][140][141]…”

“…Particularly, DEPT spectroscopy is frequently employed to determine heteronuclear spin–spin splitting constants and the number of protons nearby carbon nuclei. This indicates that DEPT spectroscopy has become a promising method for characterizing transition metal complexes 138–141 …”