𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Energy requirements for the indirect formation of cluster ions in the gas phase: the ion-molecule reaction of negative ions with esters of formic acid

✍ Scribed by Paulo Celso Isolani; José Manuel Riveros


Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
261 KB
Volume
33
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


Nestive ions zue shown to lad to so!vated ions in 'he _ms phzsse by rcsction with estew of formic acid w&n two requirements ar"-mat: (1) the bond energy of the cluster is grezter than 9.3 kczljmole, and (2) the proton nfimity of the negative ion is gcater tisn 3:9 kcaliniole. A likely mechanism for due bimolecular process is suggested based on these results.

Several recent papers from our laboratory have discussed bimolecular ion--neutral reactions which result in the indirect formation of gas phase solvated negative ions at pressures of 10-" torr [I+] . While a quantita-


📜 SIMILAR VOLUMES


Formation of metal cluster ions by gas-p
✍ R. Houriet; T. Vulpius 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 272 KB

Ion-molecule reactions occurring in Cr(CO)\*, Fe(CO),, and Mns(C0) !,, systems are carried out in a Fourier transform ion cyclotron resonance (FTICR) spectrometer. Abundant intensities of bare metal cluster ions can be formed by employing a multiple pulse sequence including selective ejections and p

Gas-phase Ion-Molecule Reactions of Trim
✍ Morizur, J.-P.; Gevrey, S.; Luna, A.; Taphanel, M.-H. 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 334 KB 👁 2 views

The gas-phase ion-molecule reactions of the phosphonium ion formed by electron impact with OP(OCH 3 ) 2 ' neutral trimethyl phosphite were studied with the use of a quadrupole ion trap (QIT) mass spectrometer. Observed reactions include competing methoxy transfers between and the neutral species to

Peptide bond formation in gas-phase ion/
✍ H. Wincel; R. H. Fokkens; N. M. M. Nibbering 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 78 KB 👁 2 views

There is a general fascination with regard to the origin of life on Earth. There is an intriguing possibility that prebiotic precursors of life occurred in the interstellar space and were then transported to the early Earth by comets, asteroids and meteorites. It is probable that some part of the pr

Ion—Molecule Reactions of Simple Amines
✍ Pykäläinen, Mika; Vainiotalo, Anto; Pakkanen, Tapani A.; Vainiotalo, Pirjo 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 865 KB

Ion-molecule reactions of mono-and diamines with acetone and pentan-%one were investigated under chemical ionization, using the carbonyl compound as reagent gas. To check the reactivity of different plasma ions, the reactions of selected ions with neutral butylamine were carried out under low pressu

Gas-phase ion—molecule reaction in an RF
✍ Yukari Matsuo; Haruka Maeda; Michio Takami 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 346 KB

Ions in an externally generated laser plasma of heavy metals have been directly confined in an RF ion trap and subjected to ion-molecule reactions. Trapped metal ions as well as their chemical reaction products have been detected with a quadrupole mass spectrometer. The first four ions of Sd transit