The reactions of carbon disulfide and sulfur dioxide with small carboxylate anions
Notice bibliographique
Résumé
In one form or another both acid gases and carboxylates have existed from prebiotic earth all the way to the present day.Here we have studied the reactions of carbon disulfide (CS 2 ) and sulfur dioxide (SO 2 ) with naked carboxylate anions (RCOO -) to observe the types of interactions possible.The reaction of CS 2 with acetate (CH 3 COO -) in acetonitrile under an inert atmosphere proceeded via an exchange mechanism.This produced carbonyl sulfide gas (COS) and a thioacetate salt, which was characterized by X-ray crystallography.On the other hand, under the same conditions, the reaction of SO 2 with formate (HCOO -) created a radical sulfur species.Overall, this led to the isolation of H 2 and CO 2 gases and to the formation of a number of possible S x O y n-species.Both reactions are thermodynamically stable enough to occur when salts of the anions, with large, noncoordinating cations, are exposed to the acid gases.The variety and biological importance of the products produced in these simple reactions show that their study may still hold many interesting and important new findings.iii To start off, I have to thank my supervisor Dr. Jason Clyburne for giving me the opportunity to do my honors project at all.Working with him and the other members of the Clyburne group has been one of the best learning experiences I've had at Saint Mary's and has given me a new respect for chemistry.Jason never let me get discouraged and was always a good person to help figure out where to go next.Without Dr. Kathy Robertson it is likely that this thesis wouldn't exist.Kathy has put in an enormous amount of work, keeping all of the Clyburne group on track this year with three different honors projects going on at the same time.Between handling the X-ray crystallography, helping to trouble shoot experiments and spending the time to edit this thesis so reading it is bearable, very little would get done around here without her.I have to thank Juha Hurmalainen at the University of Jyvskyl in Finland and Michael Johnson at Dalhousie University for both helping out with the EPR experiments.While the conditions of the experiments did not lend themselves well to EPR, both of them were very patient with me, helping to find a way to make it work.And their findings ended up being essential in the final identification of the reaction products.The wonderful staff here at Saint Mary's also deserves a huge thanks.Whether it was Patricia Granados, who spent a great deal of time helping me with separation techniques, or the technicians, helping me to track down all of the random things I needed, the entire process was smoothed over by them.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».