Collision-Induced Dissociation of Acrylonitrile Cluster Ions: Geometrical Structure of Polymerized Cluster Anion

Abstract

Collision-induced dissociation (CID) of acrylonitrile (AN: CHFCHCN) cluster cations and anions, (AN),= (n = 2-1 l), with an Ne or Kr atom was investigated in order to elucidate their structures. In the collision of (AN),-with a rare gas atom, [(AN),?-X]-(X = HCN, CH2CN) were produced along with (AN),,-( m I n). The size distributions of the product anions show that (AN),-is composed of a chemically bonded trimeric core anion solvated with chemically bonded AN trimer units and AN monomers. On the other hand, in a 1.0-eV collision of (AN),+ with a Kr atom, (AN)nr+ (rn 5 n ) were produced by evaporation of acrylonitrile molecules.

Intracluster electron transfer from a metal atom/cluster followed by anionic oligomerization of vinyl molecules

“…In a previous paper [9], we proposed that oligomerized AN cluster in M(AN) 3 contains a ring geometry, which is assignable to 1,3,5-cyclohexanetricarbonitrile (CHTCN), as reported by Kondow and co-workers [3,[5][6][7][8]. CHTCN is known as a stable species which is prepared from 1,3,5-cyclohexanetricarboxylic acid [22].…”

“…Also in the present M(AN) n clusters, the observed magic numbers can be related with the intracluster electron transfer from alkali metal atom followed by oligomerization of AN. In fact, in the detailed studies of (AN) − n ions by Kondow and co-workers [3,[5][6][7][8], n = 3 and 6 are found to be magic numbers. These stable species are concluded to be produced by intracluster oligomerization after electron attachment to (AN) n [3,[5][6][7][8].…”

“…In recent years, ionic oligomerization in the gas phase has also been studied to some extent in order to elucidate the elementary reaction processes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. For this purpose, gas phase studies should have some advantages from the following features; (1) it is possible to discuss reactivity which is free from the solvent effect, and (2) assignment of the sequentially polymerized products are directly obtained by the mass spectrometric method.…”

“…The cluster anions of vinyl compounds produced by electron transfer from high-Rydberg rare gas atoms were extensively investigated by Tsukuda and Kondow [3][4][5]. Photodissociation, collision-induced dissociation and phoa e-mail: ohshimo@qpcrkk.chem.tohoku.ac.jp toelectron spectroscopy of the cluster anions were also performed in their studies [6][7][8]. Trimeric terminations were also observed for cluster anions of acrylonitrile (AN; CH 2 =CHCN) and its derivatives [3].…”

Deposition of Acrylonitrile Cluster Ions on Solid Substrates: Thin Film Formation by Intracluster Polymerization Products

“…8 Collision-induced dissociation shows that [(AN) m CN] -(m ) 3, 6) are efficiently produced from (AN) n -(n ) 6, 9). The authors of ref 8 claim that the CHTCN units are held together through a CN group in the cluster anions.…”