Organoantimony compounds.  IV.  Preparation, characterization, and vibrational spectra of trimethyl- and triphenylantimony diazides and diisocyanates

Goel, Ram G.; Ridley, D. R.

doi:10.1021/ic50135a050

Cited by 23 publications

(3 citation statements)

References 27 publications

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“…The position of the bands are in favour of a covalently bonded linear N¼N¼N group. The various other modes of vibrations are not significantly changed from those of Ph 3 Sb(N 3 ) 2 21,22 . A medium but sharp band appearing at 356 cm À1 tentatively may be assigned to the Sb-N bond.…”

Section: Infrared Spectramentioning

confidence: 79%

SYNTHESIS AND CHARACTERISATION OF STERICALLY HINDERED Μ-OXYBIS[TRI(α-Naphthyl) ANTIMONY(V)] DERIVATIVES

Raj

Agnihotri

Kiran

2002

Synthesis and Reactivity in Inorganic and Metal-Organic Chemist

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Several new m-oxybis[tri(a-naphthyl)antimony(V)] derivatives of the general formula (R 3 SbL) 2 O (where R ¼ a-C 10 H 7 ; L ¼ N 3 , CN, SCN; ON¼CPh(OH)CHPh, ON¼C(CH 2 ) 4 CH 2 , OOCC 6 -H 4 NH 2 -p, OOCC 6 H 5 , OOCC 6 H 4 Cl-p, and NCO(C 6 H 4 )CO have been prepared by the interaction of (R 3 SbCl) 2 O with the appropriate metal salts of the ligand. (R 3 SbN 3 ) 2 O could also be obtained by the interaction of R 3 SbCl 2 with NaN 3 (1:2 molar ratio) in ether=water solvent mixture. The newly synthesised complexes have been characterised by elemental analyses, IR spectra, molecular weights and conductance measurements. A trigonal-bipyramidal geometry around the antimony atom with a Sb-O-Sb linkage is tentatively suggested.

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Section: Infrared Spectramentioning

confidence: 79%

SYNTHESIS AND CHARACTERISATION OF STERICALLY HINDERED Μ-OXYBIS[TRI(α-Naphthyl) ANTIMONY(V)] DERIVATIVES

Raj

Agnihotri

Kiran

2002

Synthesis and Reactivity in Inorganic and Metal-Organic Chemist

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“…If the activation free energy of a chemical reaction is negative, a charge-transfer complex (CT complex) as a reaction intermediate is formed in the course of the electron transfer process because the formation free energy of the CT complex can make the activation free energy of the ET reaction become negative. In fact, it has been extensively reported that chemical reactions, especially fast ET reactions, have negative activation free energy. − Since the activation free energy of ET reaction controlled by diffusion in acetonitrile is 3.81 kcal/mol, if the activation free energy in Table S1 is smaller than 3.81 kcal mol –1 , the CT complex as a reaction intermediate can be formed in the course of the electron transfer process. From these criteria, we can know the type to which each electron transfer reaction listed in Table S1 belongs.…”

Section: Resultsmentioning

confidence: 99%

Characteristic Activity Parameters of Electron Donors and Electron Acceptors

2023

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It is well-known that for an electron transfer reaction, the electron-donating ability of electron donors and the electron-accepting ability of electron acceptors can be quantitatively described by the oxidation potential of electron donors and the reduction potential of electron acceptors. However, for an electron transfer reaction, the electron-donating activity of electron donors and the electron-accepting activity of electron acceptors cannot be quantitatively described by a characteristic parameter of electron donors and a characteristic parameter of electron acceptors till now. In this paper, a characteristic activity parameter of electron donors and electron acceptors named as their thermo-kinetic parameter is proposed to quantify the electron-donating activity of electron donors and the electron-accepting activity of electron acceptors in electron transfer reactions. At the same time, the thermo-kinetic parameter values of 70 well-known electron donors and the corresponding 70 conjugated electron acceptors in acetonitrile at 298 K are determined. The activation free energies of 4900 typical electron transfer reactions in acetonitrile at 298 K are estimated according to the thermo-kinetic parameter values of 70 electron donors and 70 conjugated electron acceptors, and the estimated results have received good verification of the corresponding independent experimental measurements. The physical meaning of the thermo-kinetic parameter is examined. The relationship of the thermo-kinetic parameter with the corresponding redox potential as well as the relationship of the activation free energy with the corresponding thermodynamic driving force of electron transfer reactions is examined. The results show that the observed relationships between the thermo-kinetic parameters and the redox potentials as well as the observed relationships between the activation free energy and the thermodynamic driving force depend on the choice of electron donors and electron acceptors as well as the electron transfer reactions. The greatest contribution of this paper is to realize the symmetry and unification of kinetic equations and the corresponding thermodynamic equations of electron transfer reactions.

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“…Vibrational frequencies due to skeleton vibrations for both the trialkyl and triarytantimony(V) pseudohalides, RaSbX2 [R = alkyl or phenyl; X = N3 lss'lg°'191q93), NCO188,193) NC5188, [194][195][196]] and (Ph3SbX)20 [X = N3, NCO, NCS] Iss), have generally been interpreted in terms of a D3h skeleton symmetry. A trigonal bipyramidal geometry having pseudohalide moieties at the axial positions has been suggested.…”

Section: Pseudohalides Oxides and Related Compoundsmentioning

confidence: 99%

Structure and bonding in organic derivatives of antimony(V)

Jain

Bohra

Mehrotra

1982

Structures Versus Special Properties

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Organoantimony compounds. IV. Preparation, characterization, and vibrational spectra of trimethyl- and triphenylantimony diazides and diisocyanates

Abstract: Notessearch Council of Canada for financial support and the award of a scholarship (to D. R. R.). We are also grateful to Dr. C. J. Willis (University of Western Ontario) for the use of a Cary 82 Raman spectrometer.

Cited by 23 publications

References 27 publications

SYNTHESIS AND CHARACTERISATION OF STERICALLY HINDERED Μ-OXYBIS[TRI(α-Naphthyl) ANTIMONY(V)] DERIVATIVES

SYNTHESIS AND CHARACTERISATION OF STERICALLY HINDERED Μ-OXYBIS[TRI(α-Naphthyl) ANTIMONY(V)] DERIVATIVES

Characteristic Activity Parameters of Electron Donors and Electron Acceptors

Structure and bonding in organic derivatives of antimony(V)

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