Abstract
ESR spectroscopic investigations on the three-spin system (1) have been carried out. The radical (1) has a quartet ground state and associates to form a diamagnetic dimer. The association constant K 263 = (6.7±0.3) × 10 3 1/mole was determined by susceptibility measurements, using ESR spectroscopy. From the temperature dependence of K, a standard enthalpy of association of Δ H 0 = 0 was obtained. Thus, the dimerisation occurs only as a result of an increase in entropy. The low-temperature ESR spectrum of (1) was interpreted with a quantum-mechanical model. The zero-field parameter D′ = 44.1 G was determined by simulation of the experimental spectrum.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
