Photochemical reactions of metal carbonyls with heteroaromatic methanesulfonylhydrazone-based ligands


Orhan G., Şentürk O. S. , ÖZDEMİR ÖZMEN Ü. , SERT S., SUBAŞI E.

JOURNAL OF COORDINATION CHEMISTRY, vol.67, no.19, pp.3216-3225, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 19
  • Publication Date: 2014
  • Doi Number: 10.1080/00958972.2014.963569
  • Title of Journal : JOURNAL OF COORDINATION CHEMISTRY
  • Page Numbers: pp.3216-3225
  • Keywords: Heteroaromatic methanesulfonylhydrazone, Metal carbonyls, Photochemical reactions, INFRARED-SPECTRA, SPECTROSCOPIC CHARACTERIZATION, VIBRATIONAL-SPECTRA, DIMETHYL SULFONE, M(CO)(6) M=CR, COMPLEXES, MOLYBDENUM, MO, MN(CO)(3)CP, RE(CO)(5)BR

Abstract

Three new heteroaromatic methanesulfonylhydrazone derivatives: thiophene-2-carboxy aldehydemethanesulfonylhydrazone (msh 1), 2-acetylthiophenemethanesulfonylhdrazone (msh 2), and 2-acetyl-5-methylthiophenemethanesulfonylhydrazone (msh 3) were prepared and their metal carbonyl complexes ([M(CO)(5)(msh 1)] M=Cr, 1a; Mo, 1b; W, 1c); ([M(CO)(5)(msh 2)] M=Cr, 2a; Mo, 2b; W, 2c); and ([M(CO)(5)(msh 3)] M=Cr, 3a; Mo, 3b; W, 3c) were synthesized by photochemical reactions of [M(CO)(6) M=Cr, Mo, W] with msh 1-3. Heteroaromatic methanesulfonylhydrazones, msh 1-3, and their metal carbonyl complexes were characterized by elemental analysis, mass spectrometry, IR, and H-1 and C-13-{H-1} NMR spectroscopy. According to all the spectroscopic data, msh 1-3 are monodentate and coordinate via thiophene ring sulfur. The msh 1-3 must act as two-electron donors to satisfy the 18-electron rule.