ION MOLECULE REACTIONS LEADING TO WFN+ (N=1-5) - IMPLICATIONS FOR THEMECHANISMS OF ION SURFACE-REACTIONS/

Reactions between W(CO)6 and perflurohexane (C6F14) in a chemical ioni zation source yield the complex ion [W(CO)6.C6F13]+. When this ion is selected in an MS-MS experiment and dissociated using 195 eV collision s upon argon, products WF(n)+ (n = 1-5) are generated. By simultaneous ly mass-selecting all the isotopic forms of the parent ion, the tungst en-containing fragment ions WF(n)+ (n = 1-5) are easily identified thr ough their characteristic isotopic pattern in the product ion spectrum . These collisional activation data suggest that WF(n)+ (n = 1-5) can be formed in a single collision of W(CO)6.+ with a fluorocarbon molecu le; this process may be operative in collisions of tngsten-containing ions with fluorinated self-assembled monolayer surfaces.