Gas phase hydration of polyethylene glycol–metal cation complexes

Hydration of serine–metal cation complexes: implication for the role of water in the origin of homochirality on the Earth

“…Argon 4.0 was used as a collision gas at the flow rate 0.2-0.6 ml/min (0.2 is the standard value) in the T-wave collision cell. The relation between the collision gas flow rate and the collision cell pressure has been published elsewhere (Frański 2019). Collision energy (the most important parameter for CID-MS/MS experiments) was 5-20 eV-laboratory frame.…”

“…Usually, to study the gas phase interaction between water molecule (and other solvent molecule) and ion, the use of a specially designed mass spectrometer is required. However, sometimes the interaction between ions and water which is present as an impurity in the commercial mass spectrometers may be also very interesting (Alechaga et al 2016;Beach and Gabryelski 2018;Frański 2019;Hu et al 2017). It is evident that the attached water comes from the collision gas, in which it is present as an impurity, since the collision gas flow rate strongly affected the ratios [(SerL-H) 3 Fig.…”

Unusual gas‐phase hydration efficiency of magnesium–adenosine complex

“…Water was present as an impurity in the collision gas and water attachment to the product ions was observed. Such a phenomenon is a relatively common process, and its efficiency depends on the product ion susceptibility to hydration 23–27 . As presented further, an unusually high hydration efficiency has been observed for the adenosine complex (ion [A r − H + Mg] + ).…”

“…Formation of different types of ions indicates that nucleobase moieties form complexes with Mg 2+ . It has to be stressed that, as described elsewhere, the hydration efficiency depends only on the collision gas flow rate, whereas the collision energy and selected precursor ion do not affect the hydration efficiency 23,25 …”

Unexpected cytosine–AuCl4− interaction under electrospray ionization mass spectrometry conditions—Formation of cytosine–Au(I) complexes

“…The product ion spectra of ions [C 2 þCu] þ and [C 2 þAu] þ obtained at E cm % 1.7 eV, (water attachment occurs due to the presence of water in the collision cell as an impurity) 30. …”