Mass Spectrometric Study of Carbon Vapor

Active Thermochemical Tables: dissociation energies of several homonuclear first-row diatomics and related thermochemical values

“…6 In contrast to this, Huber and Herzberg [31] termed the determination of Messerle and Krauss [30] as 'somewhat doubtful' and listed D 0 (C 2 ) = 599 kJ/mol (with an implied uncertainty of about ±9 kJ/mol) based on high-temperature measurements of Brewer et al [32] and of Kordis and Gingerich [33]. Gurvich et al [12,13] examined nearly all high-temperature measurements that were available at the time [33][34][35][36][37][38][39][40], and ultimately anchored the thermochemistry of C 2 on the same spectroscopic measurement as JANAF, but reinterpreted it as implying D 0 (C 2 ) = 600 ± 10 kJ/ mol.…”

Ionization potentials, dissociation energies and statistical fragmentation of neutral and positively charged small carbon clusters

“…As a general trend, first IP slowly decreases with cluster size, but this decrease is not monotonic and present some oscillations. The first ionization potencial has been measured by different authors [31][32][33][34][35][36][37][38][39] and theoretically calculated by Giuffreda et al [40]. We have also included in Fig.…”

Photodissociation of Linear Carbon Clusters Cn (n = 4−6)

“…In 1959, Drowart et al 29 obtained heats of formation of C 2 -C 5 using this method. However, "third law" extrapolation to ∆H f at 298 K (or 0 K) requires knowledge of the entropy of carbon clusters, and since some bend frequencies for these species were later found to be very low (i.e., 63 cm -1 for C 3 30 ), the entropy was underestimated in this early measurement.…”