Organocobaloximes with mixed-dioxime equatorial ligands: a one-pot synthesis

Gupta, B. Dass; Singh, Vinod K.; Qanungo, Kushal; Vijaikanth, Vijendran; Yamuna, R.; Barclay, Tosha M.; Cordes, Wallace

doi:10.1016/s0022-328x(00)00105-4

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…The third interaction is caused by the dioxime methyl hydrogen, which propagates in a linear fashion. In cobaloximes with mixed dioxime ligands also a similar interaction has been observed recently 5a 5 View of a single layer of 20 showing the C−H···O interaction.…”

Section: Resultssupporting

confidence: 68%

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Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

2004

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Organo-bridged dicobaloximes with four different dioximes Py(L) 2 CoCH 2 -R-CH 2 Co(L) 2 Py (L ) dmgH, dpgH, chgH, and gH) have been synthesized and characterized by 1 H and 13 C NMR and FAB mass spectroscopy. The cis influencing order observed in dicobaloximes is similar to the previously observed order in monocobaloximes. The cyclic voltammetric results show that an irreversible single-step two-electron reduction of Co III to Co I takes place. The Co-C bond in 4a cleaves during crystallization and results in the formation of o-vinylbenzyl cobaloxime. The variable-temperature 1 H NMR study suggests that the Co-C bond rotation is restricted and its magnitude depends on both the nature of the bridging ligand and the dioxime.

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Section: Resultssupporting

confidence: 68%

“…Although numerous examples of novel mononuclear organocobaloximes have been described, there are only a few reports on organo-bridged dicobaloximes. The earliest examples of such complexes were reported by Schrauzer 6a and Johnson,6b but no spectral characterization was described.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

2004

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“…Most of the work on cobaloximes include electron-transfer reactions (Dayalan & Vijayaraghavan, 2001) and catalytic activity (Razavelt et al, 2005) in solution. There are few literature evidences relating the structural aspects of cobaloximes (Gupta et al, 2000;Gupta et al, 2001;Gupta et al, 2004). We report here the synthesis and X-ray crystal structure of the title compoud.…”

Section: Data Collectionmentioning

confidence: 81%

“…For related literature, see: Dayalan & Vijayaraghavan (2001); Lee et al (2007); Gupta et al (2000Gupta et al ( , 2001Gupta et al ( , 2004; Ohkubo & Fukuzumi (2005); Razavelt et al (2005). Trommel et al (2001).…”

Section: Related Literaturementioning

confidence: 99%

Dichlorido(dimethylglyoximato-κ²N,N′)(dimethylglyoxime-κ²N,N′)cobalt(III)

Ramesh

SubbiahPandi

Jothi³

et al. 2008

Acta Cryst E

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In the title compound, [Co(C4H7N2O2)Cl2(C4H8N2O2)], the CoIII ion has a distorted octahedral coordination environment. The equatorial plane consists of four N atoms, two each from the dimethylglyoxime and dimethylglyoximate ligands, while the two axial positions are occupied by two chloride ions. Strong intramolecular O—H⋯O hydrogen bonds are observed between the dimethylglyoxime and dimethylglyoximate ligands. Molecules are linked into a chain running along the [101] direction by O—H⋯O and C—H⋯Cl hydrogen bonds. The chains are cross-linked through intermolecular C—H⋯Cl hydrogen bonds.

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“…For related literature, see: Dayalan & Vijayaraghavan (2001); Gupta et al (2000Gupta et al ( , 2001Gupta et al ( , 2004; Ohkubo & Fukuzumi (2005); Phor et al (1985); Razavelt et al (2005); Trommel et al (2001); Vijayaraghavanan & Dayalan (1992).…”

Section: Related Literaturementioning

confidence: 99%

(N-tert-Butylpyrazine-2-carboxamide-κN ⁴)chloridobis(dimethylglyoximato-κ² N,N′)cobalt(III) hemihydrate

Martin¹,

Revathi²,

Varghese

et al. 2007

Acta Cryst E

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Organocobaloximes with mixed-dioxime equatorial ligands: a one-pot synthesis

Cited by 12 publications

References 29 publications

Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

Dichlorido(dimethylglyoximato-κ²N,N′)(dimethylglyoxime-κ²N,N′)cobalt(III)

(N-tert-Butylpyrazine-2-carboxamide-κN ⁴)chloridobis(dimethylglyoximato-κ² N,N′)cobalt(III) hemihydrate

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Organocobaloximes with mixed-dioxime equatorial ligands: a one-pot synthesis

Cited by 12 publications

References 29 publications

Synthesis, Characterization, and Variable-Temperature1H NMR Behavior of Organo-Bridged Dicobaloximes

Synthesis, Characterization, and Variable-Temperature1H NMR Behavior of Organo-Bridged Dicobaloximes

Dichlorido(dimethylglyoximato-κ2N,N′)(dimethylglyoxime-κ2N,N′)cobalt(III)

(N-tert-Butylpyrazine-2-carboxamide-κN 4)chloridobis(dimethylglyoximato-κ2 N,N′)cobalt(III) hemihydrate

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Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

Synthesis, Characterization, and Variable-Temperature¹H NMR Behavior of Organo-Bridged Dicobaloximes

Dichlorido(dimethylglyoximato-κ²N,N′)(dimethylglyoxime-κ²N,N′)cobalt(III)

(N-tert-Butylpyrazine-2-carboxamide-κN ⁴)chloridobis(dimethylglyoximato-κ² N,N′)cobalt(III) hemihydrate