57Fe, 13C Coupling Constants from Inverse Detection Experiments at Natural Isotope Abundance

✍ Scribed by Eric J. M. Meier; Wiktor Koźmiński; Wolfgang von Philipsborn

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 301 KB
• Volume: 34
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/(sici)1097-458x(199601)34:1<89::aid-omr843>3.0.co;2-v

✦ Synopsis

The possibility of measuring 57Fe,'3C coupling constants and 13C/'2C isotope effects on 57Fe nuclei by 'pseudotriple' and 'pseudo-quadruple' resonance experiments using (1H,57Fe), (1H,57Fe)-{ 31P} and (3'P,13C)-{ 13C,'H} HMQC inverse correlations with $-BIRD or bi-selective pulses is demonstrated. 57Fe,'H coupling constants in the range of 1-2 Hz were used for the polarization transfer. ' J and ' J 57Fe,13C coupling constants, their relative signs, and isotopic shifts C(57Fe) were determined for the first time in (cyclopentadieny1)iron complexes with 57Fe and 13C in natural isotope abundance.