Abstract
Information is presented on the catalytic properties of macrocyclic and polychelate complexes of cobalt in the reaction of methyl methacrylate polymerization. The catalytic activities of these compounds are compared with their donor-acceptor and redox properties.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
A. A. Gridnev, Ya. D. Lampeka, B. R. Smirnov, and K. B. Yatsimirskii, “Structural features of macrocyclic complexes of cobalt as catalysts for chain transfer to monomer in radical polymerization,” Teor. Éksp. Khim., 23, No. 3, 317–322 (1987).
A. A. Gridnev, I. M. Bel'govskii, and N. S. Enikolopyan, “Reduction of cobalt(III) porphyrinates and glyoximates by free radicals in polymerization of methyl methacrylate,” Dokl. Akad. Nauk SSSR, 289, No. 6, 1408–1412 (1986).
Y. Nonaka and K. Hamada, “The effects of BF2 and B(C2H5) substitution for bridging hydrogen atoms in cobalt(II), nickel(II), and copper(II) complexes with some oximate ligands,” Bull. Chem. Soc. Jpn., 54, No. 10, 3185–3190 (1981).
M. C. Weiss, G. Gordon, and V. L. Godken, “Crystal and molecular structure of macrocyclic nickel(II) complex Ni(C18H14N4):dibenzo[b,i][1,4,8,11]tetraazacyclotetradecadecinatonickel(II),” Inorg. Chem., 16, No. 2, 305–310 (1977).
S. Deger, M. Hanack, W. Hiller, and J. Strähle, “Synthese und Structur von Cyano(dihydrodibenzo [b,i][1,4,8,11]tetraaza[14]annulene)cobalt(III),” Liebigs Ann. Chem., No. 11, 1791–1797 (1984).
F. Hanic, M. Handlovic, and O. Lindgren, “Crystal and molecular structure of macrocyclic 2,11-dimethyldibenzo[6,7,13,14]-1,5,8,12-tetraazacyclotetradeca-2,4,6,8,10,13-hexaenenickel(II) complex,” Collect. Czech. Chem. Commun., 37, No. 7, 2119–2129 (1972).
M. C. Weiss, B. Bursten, S. M. Peng, and V. L. Godken, “Effects of peripheral steric constraints and metal ion size on the structure of three five-coordinate macrocyclic ligand complexes of the type [M(C22H22N4)X],” J. Am. Chem. Soc., 98, No. 25, 8021–8031 (1976).
M. Soriano-Garcia, P. A. Toscano, J. Gomez-Lara, and M. E. Lopez-Morales, “Structure of (6,13-diacetyl-5,12-dimethyl-1,4,8,11-tetraazacyclotetradeca-4,6,11,13-tetraenato)nickel(II)-7,7,8,8-tetracyano-p-quinodimethane (I/I), Acta Crystallogr., Sect. C, 41, No. 7, 1024–1026 (1985).
M. C. Weiss and V. L. Godken, “Chemistry of the macrocyclic cobalt(II) complex [Co(C22H22N4)]. Reaction with halogens, molecular oxygen, alkynes, and nitriles,” J. Am. Chem. Soc., 98, No. 11, 3389–3392 (1976).
K. B. Yatsimirskii and Ya. D. Lampeka, Physical Chemistry of Metal Complexes with Macrocyclic Ligands [in Russian], Naukova Dumka, Kiev (1985).
K. M. Kadish, D. Schaeper, L. A. Bottomley, et al., “Electrochemical studies of macrocyclic complexes as synthetic porphyrin analogs,” J. Inorg. Nucl. Chem., 42, No. 3, 469–474 (1980).
E.-G. Jäger, M. Rudolph, and D. Seidel, “Electron-Transfer Serien mit fünf reversiblen Überbängen bei Cobaltchelaten von Tetraaza[14]annulenen,” Z. Chem., 25, No. 10, 378–379 (1985).
A. Pezeshk, F. T. Greenway, and G. Vincow, “Electron paramagnetic resonance of low spin cobalt(II) complexes: Effect of axial ligand upon the ground state,” Inorg. Chem., 17, No. 12, 3421–3425 (1978).
J. Chekraworty, K. B. Naik, K. L. Singh, and B. Sahoo, “Macrocyclic metal complexes. 4. Electrochemical studies on cobalt(III) macrocyclic complexes,” Indian J. Chem. A, 22, No. 1, 35–38 (1983).
T. Ramasami and J. H. Espenson, “Kinetics and mechanism of substitution reactions of cobalt(I) derivatives. Evidence of π-adduct formation,” Inorg. Chem., 19, No. 6, 1523–1527 (1980).
G. N. Schrauzer, J. H. Weber, and T. M. Beckham, “Cobalt-carbon cleavage in substituted alkylcobalamines and alkylcobaloximes. Evidence for d-orbital participation in olefin π-complexes of cobalt(I) nucleophiles,” J. Am. Chem. Soc., 92, No. 24, 7078–7086 (1970).
B. R. Smirnov, I. R. Morozova, A. P. Marchenko, et al., “Mechanism of hydrogen transfer to monomer by chain transfer catalyst in radical polymerization of methyl methacrylate,” Dokl. Akad. Nauk SSSR, 253, No. 4, 891–895 (1980).
A. A. Gridnev, I. M. Bel'govskii, and N. S. Enikolopyan, “Kinetics and molecular weight distribution with intensive catalysis of chain transfer to monomer,” Vysokomol. Soedin., Ser. B, 28, No. 2, 85–89 (1986).
A. A. Gridnev, I. M. Bel'govskii, and N. S. Enikolopyan, “Formation of inner compounds of cobalt(I) under the influence of free radicals,” Dokl. Akad. Nauk SSSR, 289, No. 3, 616–620 (1986).
Author information
Authors and Affiliations
Additional information
Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 6, pp. 698–704, November–December, 1989.
The authors wish to express their appreciation to E.-G. Eger for kindly furnishing samples of the cobalt-alkyl and nickel compounds.
Rights and permissions
About this article
Cite this article
Goncharov, A.V., Gridnev, A.A., Lampeka, Y.D. et al. Catalysts of chain transfer to monomer in radical polymerization: Catalyst structure and donor-acceptor and redox properties. Theor Exp Chem 25, 642–647 (1989). https://doi.org/10.1007/BF00534445
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00534445