Larry W. Arndt scite author profile

1984

electrophiles in their addition reactions with alkenes. A sharp decrease in kfkt was observed when R in 1 was changed from Me to H. Similar trends are also observed when aryl substituents (X) in 1 (R = H) are successively changes from electron-withdrawing (Cl) to electron-donating (MeO) groups (see Table II).This supports the idea26,3,4 that there is substantial hydride character associated with the migrating hydrogen and concomitant positive charge development at the origin of the migration.5(5) The substitutent effects on the intercepts kjk2 are rather unexpected.Assuming that k2 is not affected by substituents on the «-phenyl ring, one would expect that the values of k[/k2 should be decreased as the ring substituents are changed from electron-donating to -withdrawing groups. Observed parabolic deviations from linearity may imply that intermolecular process is not unaffected by the ring substituent. Presumably, orientation of the phenyl group may affect the electronic as well as steric nature of the chlorocarbene.

show abstract

Promotion of methyl/carbonyl migratory insertion by transition-metal Lewis acids. Synthesis and reactivity of a transition-metal heterobimetallic carbonyl alkyl anion, MeFeW(CO)9-

Arndt¹,

Bancroft²,

et al. 1988

Organometallics

Olefin isomerization catalysis by heterobimetallic hydrides, HFeM(CO)8L- (M = Cr, Mo, W; L = CO, PR3)

Tooley¹,

Arndt²,

1985

Hydrogen-deuterium exchange of the anionic Group VIB transition-metal hydrides. Convenient, in situ deuterium transfer reagents

Gaus¹,

Kao²,

et al. 1984

Metal donor to metal acceptor complexes. Fe(CO)42-, HFe(CO)4-, and trans-HFe(CO)3P(OMe)3- as anionic ligands to M(CO)50, M = Cr, W

Arndt¹,

Darensbourg²,

Delord³

et al. 1986