Kinetics of azide attack on organonitriles coordinated to pentaamminecobalt(III)

J. H. Hall, R. Lopez de la Vega, W. L. Purcell

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Four new 5-substituted tetrazole complexes of pentaamminecobalt(III) have been synthesized. The N-1 bonded complexes of 5-(p-methylphenyl)tetrazole, 5-(p-chlorophenyl)tetrazole, 5-(p-nitrophenyl)tetrazole and the N-2 bonded complex of 5-(m-formylphenyl)tetrazole. Kinetic studies of the complex formation reaction, wherein azide ion attacks coordinated organonitrile ligands, have been shown to follow a second order rate law, first order in nitrile complex and azide. Rate constants and activation parameters have been determined for five organonitrile complexes and a Hammett type correlation has been established for the formation reaction described by the equation log k = 2.42σ - 2.44 at 25 °C and ionic strength 1.0 M. Two mechanisms are proposed for complex formation which are consistent with our observations.

Original languageEnglish
Pages (from-to)157-162
Number of pages6
JournalInorganica Chimica Acta
Volume102
Issue number2
DOIs
StatePublished - Aug 15 1985

Fingerprint

tetrazoles
Azides
Ionic strength
attack
Rate constants
Chemical activation
Ligands
Kinetics
Ions
kinetics
Nitriles
nitriles
Osmolar Concentration
1H-tetrazole
activation
ligands
ions

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Kinetics of azide attack on organonitriles coordinated to pentaamminecobalt(III). / Hall, J. H.; de la Vega, R. Lopez; Purcell, W. L.

In: Inorganica Chimica Acta, Vol. 102, No. 2, 15.08.1985, p. 157-162.

Research output: Contribution to journalArticle

Hall, J. H. ; de la Vega, R. Lopez ; Purcell, W. L. / Kinetics of azide attack on organonitriles coordinated to pentaamminecobalt(III). In: Inorganica Chimica Acta. 1985 ; Vol. 102, No. 2. pp. 157-162.
@article{191a155067a34dd5b20bd0a8a5678291,
title = "Kinetics of azide attack on organonitriles coordinated to pentaamminecobalt(III)",
abstract = "Four new 5-substituted tetrazole complexes of pentaamminecobalt(III) have been synthesized. The N-1 bonded complexes of 5-(p-methylphenyl)tetrazole, 5-(p-chlorophenyl)tetrazole, 5-(p-nitrophenyl)tetrazole and the N-2 bonded complex of 5-(m-formylphenyl)tetrazole. Kinetic studies of the complex formation reaction, wherein azide ion attacks coordinated organonitrile ligands, have been shown to follow a second order rate law, first order in nitrile complex and azide. Rate constants and activation parameters have been determined for five organonitrile complexes and a Hammett type correlation has been established for the formation reaction described by the equation log k = 2.42σ - 2.44 at 25 °C and ionic strength 1.0 M. Two mechanisms are proposed for complex formation which are consistent with our observations.",
author = "Hall, {J. H.} and {de la Vega}, {R. Lopez} and Purcell, {W. L.}",
year = "1985",
month = "8",
day = "15",
doi = "10.1016/S0020-1693(00)86753-5",
language = "English",
volume = "102",
pages = "157--162",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",
number = "2",

}

TY - JOUR

T1 - Kinetics of azide attack on organonitriles coordinated to pentaamminecobalt(III)

AU - Hall, J. H.

AU - de la Vega, R. Lopez

AU - Purcell, W. L.

PY - 1985/8/15

Y1 - 1985/8/15

N2 - Four new 5-substituted tetrazole complexes of pentaamminecobalt(III) have been synthesized. The N-1 bonded complexes of 5-(p-methylphenyl)tetrazole, 5-(p-chlorophenyl)tetrazole, 5-(p-nitrophenyl)tetrazole and the N-2 bonded complex of 5-(m-formylphenyl)tetrazole. Kinetic studies of the complex formation reaction, wherein azide ion attacks coordinated organonitrile ligands, have been shown to follow a second order rate law, first order in nitrile complex and azide. Rate constants and activation parameters have been determined for five organonitrile complexes and a Hammett type correlation has been established for the formation reaction described by the equation log k = 2.42σ - 2.44 at 25 °C and ionic strength 1.0 M. Two mechanisms are proposed for complex formation which are consistent with our observations.

AB - Four new 5-substituted tetrazole complexes of pentaamminecobalt(III) have been synthesized. The N-1 bonded complexes of 5-(p-methylphenyl)tetrazole, 5-(p-chlorophenyl)tetrazole, 5-(p-nitrophenyl)tetrazole and the N-2 bonded complex of 5-(m-formylphenyl)tetrazole. Kinetic studies of the complex formation reaction, wherein azide ion attacks coordinated organonitrile ligands, have been shown to follow a second order rate law, first order in nitrile complex and azide. Rate constants and activation parameters have been determined for five organonitrile complexes and a Hammett type correlation has been established for the formation reaction described by the equation log k = 2.42σ - 2.44 at 25 °C and ionic strength 1.0 M. Two mechanisms are proposed for complex formation which are consistent with our observations.

UR - http://www.scopus.com/inward/record.url?scp=0000081624&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000081624&partnerID=8YFLogxK

U2 - 10.1016/S0020-1693(00)86753-5

DO - 10.1016/S0020-1693(00)86753-5

M3 - Article

AN - SCOPUS:0000081624

VL - 102

SP - 157

EP - 162

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 2

ER -