Abstract
Activation volumes for the complexation of nickel(II) ion with isoquinoline in various solvents were determined by a high-pressure stopped-flow technique. Values of activation volume for formation and dissociation of the (isoquinoline)nickel(II) complex are respectively 7.4 ± 1.3 and 8.9 ± 0.8 cm3 mol-1 in water, 9.3 ± 0.3 and 12.2 ± 0.3 cm3 mol-1 in N,N-dimethylformamide, 12.8 ± 0.6 and 9.9 ± 0.5 cm3 mol-1 in methanol, and 12.6 ± 0.5 and 15.7 ± 1.1 cm3 mol-1 in ethanol. The activation volume of the complex formation in acetonitrile is 9.4 ± 0.1 cm3 mol-1. All the positive values of the activation volume strongly indicate that the ligand substitution reactions on nickel(II) ion proceed via a dissociative-interchange mechanism in these solvents.
| Original language | English |
|---|---|
| Pages (from-to) | 2564-2567 |
| Number of pages | 4 |
| Journal | Inorganic Chemistry |
| Volume | 22 |
| Issue number | 18 |
| Publication status | Published - 1983 |
| Externally published | Yes |
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- Inorganic Chemistry
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Activation volume as evidence for a dissociative-interchange mechanism of nickel(II) ion complexation with isoquinoline in water, N,N-dimethylformamide, acetonitrile, methanol, and ethanol. / Ishihara, Koji; Funahashi, Shigenobu; Tanaka, Motoharu.
In: Inorganic Chemistry, Vol. 22, No. 18, 1983, p. 2564-2567.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Activation volume as evidence for a dissociative-interchange mechanism of nickel(II) ion complexation with isoquinoline in water, N,N-dimethylformamide, acetonitrile, methanol, and ethanol
AU - Ishihara, Koji
AU - Funahashi, Shigenobu
AU - Tanaka, Motoharu
PY - 1983
Y1 - 1983
N2 - Activation volumes for the complexation of nickel(II) ion with isoquinoline in various solvents were determined by a high-pressure stopped-flow technique. Values of activation volume for formation and dissociation of the (isoquinoline)nickel(II) complex are respectively 7.4 ± 1.3 and 8.9 ± 0.8 cm3 mol-1 in water, 9.3 ± 0.3 and 12.2 ± 0.3 cm3 mol-1 in N,N-dimethylformamide, 12.8 ± 0.6 and 9.9 ± 0.5 cm3 mol-1 in methanol, and 12.6 ± 0.5 and 15.7 ± 1.1 cm3 mol-1 in ethanol. The activation volume of the complex formation in acetonitrile is 9.4 ± 0.1 cm3 mol-1. All the positive values of the activation volume strongly indicate that the ligand substitution reactions on nickel(II) ion proceed via a dissociative-interchange mechanism in these solvents.
AB - Activation volumes for the complexation of nickel(II) ion with isoquinoline in various solvents were determined by a high-pressure stopped-flow technique. Values of activation volume for formation and dissociation of the (isoquinoline)nickel(II) complex are respectively 7.4 ± 1.3 and 8.9 ± 0.8 cm3 mol-1 in water, 9.3 ± 0.3 and 12.2 ± 0.3 cm3 mol-1 in N,N-dimethylformamide, 12.8 ± 0.6 and 9.9 ± 0.5 cm3 mol-1 in methanol, and 12.6 ± 0.5 and 15.7 ± 1.1 cm3 mol-1 in ethanol. The activation volume of the complex formation in acetonitrile is 9.4 ± 0.1 cm3 mol-1. All the positive values of the activation volume strongly indicate that the ligand substitution reactions on nickel(II) ion proceed via a dissociative-interchange mechanism in these solvents.
UR - http://www.scopus.com/inward/record.url?scp=0004165030&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0004165030&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0004165030
VL - 22
SP - 2564
EP - 2567
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 18
ER -