Electron Spin Exchange Reactions of Muonium Atoms with Chromium(III) Complexes: Contrasts with Positronium

Lazzarini, E.; Stadlbauer, John M.; Venkateswaran, Krishnan; Gillis, Hugh A.; Porter, Gerald B.; Walker, David C.

doi:10.1021/j100084a022

Cited by 7 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…a) and b) Fantola Lazzarini et al (1994;1995); c) and d) Duplattre et al (1980;1981); e, f, g) Mogensen ( ) (1979; Mogensen et al (1974;1982a,b).…”

Section: Annihilationmentioning

confidence: 94%

“…The data by Bartal et al (1974) are summarized in Table 4•1 and those by Fantola- Lazzarini et al (1994) in Table 4•2. The structures of the complexes of items 5, 9, 10, 11 and 13 of Table 4•2 are given in Fig.…”

Section: •1mentioning

confidence: 97%

“…The first large series of rate constants, k Ox , of Co III complexes was reported by Bartal and Ache (1974), whose systematic investigation was subsequently reconsidered and extended to other kinds of Co III complexes, namely to caged complexes, by Fantola- Lazzarini et al (1994).…”

Section: •1mentioning

confidence: 99%

“…In the case of CR, both ⌬W and should decrease as c increases, while I(p-Ps) should increase. Data of pure H 2 O and imH complexes from Fantola- Lazzarini et al (1993;1998).…”

Section: •2 Spin Exchange Se Reactions Of Ps Atoms 4•2•1 Mechanisms and Probabilities Of Se Reactionsmentioning

confidence: 99%

“…Table 4•8 Ratios, (c)/(H 2 O), between the viscosity coefficient, (c), in solutions of the complexes at concentration c, and that of pure water (H 2 O), for various c and T. From Fantola- Lazzarini et al (1993) difference between the two statements may be exemplified by the hypothetical complex [Mn IV Cl 6 ] 2-. According to the literature its t M h L value is 1 and ␤ = 0, h L (6 Cl -) being 2 and t M (Mn IV ) 0•5, the largest ones (Table 4•6).…”

Section: Table 4•7 -Continuedmentioning

confidence: 99%

See 4 more Smart Citations

REACTIVITY OF 3d METAL COMPLEXES TOWARDS POSITRONIUM ATOMS

Lazzarini

1999

prog. rct. kin. mech.

Self Cite

View full text Add to dashboard Cite

The rate constants of oxidation and spin exchange reactions of positronium, Ps, atoms promoted at various temperatures by numerous 3d complexes are reviewed. The experimental methods used in the field are also described. It is shown that the rate constants of Ps oxidation, kOx, and Ps conversion reactions, kCR, may easily be interpreted on the basis of ligand field theory. In particular, values of kCR were found to be linearly correlated with delocalization of unpaired electrons of the metal ions caused by the ligands, as is described by the ratio β between the inter-electronic repulsion parameters in complexes and in the free gaseous ions. The empirical equation used to estimate β seems to work better than previously believed. This should also be considered an achievement of the experiments reviewed. The main conclusion is that, not only may Ps reactions with 3d complexes be easily interpreted by means of ligand field theory, but that the measurements of k for Ps reactions may, reciprocally, constitute a new method for investigating 3d complexes. Evidence was also found that the same conclusions should also be true for reactions of muonium, Mu.

show abstract

“…a) and b) Fantola Lazzarini et al (1994;1995); c) and d) Duplattre et al (1980;1981); e, f, g) Mogensen ( ) (1979; Mogensen et al (1974;1982a,b).…”

Section: Annihilationmentioning

confidence: 94%

Section: •1mentioning

confidence: 97%

Section: •1mentioning

confidence: 99%

“…In the case of CR, both ⌬W and should decrease as c increases, while I(p-Ps) should increase. Data of pure H 2 O and imH complexes from Fantola- Lazzarini et al (1993;1998).…”

Section: •2 Spin Exchange Se Reactions Of Ps Atoms 4•2•1 Mechanisms and Probabilities Of Se Reactionsmentioning

confidence: 99%

Section: Table 4•7 -Continuedmentioning

confidence: 99%

See 3 more Smart Citations