Isomerization of conjugated dienes via photolysis of metal carbonyl-diene complexes

Wrighton, Mark S.; Hammond, George S.; Gray, Harry B.

doi:10.1021/ja00723a048

Cited by 29 publications

(4 citation statements)

References 2 publications

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“…assume that electron transfer between redox species of different spin multiplicites is spin forbidden,46 or at least spin restricted, we can exclude one of the remaining four which is high-spin Fe(III) reduced to intermediate-spin Fe(II). This leaves three electrode reactions (eq 6-8) which exist in the iron porphyrin Fe(III)Hs -Fe(II)HS (6) Fe(III)is -Fe(II)IS…”

Section: Tppfexmentioning

confidence: 99%

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Counterion and solvent effects on the electrode reactions of iron porphyrins

Bottomley¹,

Kadish²

1981

Inorg. Chem.

129

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The first, systematic study of the interacting effects of solvent and axially coordinated monovalent anions on the electroreduction mechanisms and redox potentials of iron porphyrins is presented. Five different anions were coordinated to (5,10,15,20tetraphenylporphinato)iron(III), and their respective redox reactions were investigated in 12 nonaqueous solvents. Potential shifts with changes in solvent were directly related to solvent donicity. Potential shifts with changes in counterion were related to the degree of iron(III)-counterion interaction and were also found to be solvent dependent. The counterion is the predominant factor governing the type of electron-transfer mechanism observed for the electrode reactions of iron porphyrins.With the results obtained, the apparent independence of redox potentials of the iron-center spin state is established.

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Section: Tppfexmentioning

confidence: 99%

“…TPPFeCl and (TPPFe)2G were used as received from Strem Chemical Co. or were synthesized as per the method of Adler et al12 ©1981 American Chemical Society 0 Determined from cyclic differential pulse voltammetric data. 6 Second reduction process (see text for details). c Two different electrode processes were overlapped.…”

Section: Introductionmentioning

confidence: 99%

Counterion and solvent effects on the electrode reactions of iron porphyrins

Bottomley¹,

Kadish²

1981

Inorg. Chem.

129

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“…Also, we are evaluating the importance of the thermal substitution step in the W(CO)6 photoassisted isomerization of olefins. 16 It is possible that W(CO)3(olefin)-olefin substitution is the rate-determining step in the reaction. The photoisomerization reactions are temperature dependent, 17 and experiments are now in progress to determine the effect quantitatively for a number of olefins.…”

Section: Discussionmentioning

confidence: 99%

Mechanism of substitution of acetone by alkenes in acetonepentacarbonyltungsten(O)

Wrighton¹,

Hammond²,

Gray³

1971

J. Am. Chem. Soc.

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“…Particularly, numerous numbers of the M(CO) 5 L type complexes have been prepared by using the photochemical CO substitution of Group 6 metal-carbonyls [2]. In this way, the Group 6 metal-carbonyl complexes of substituted pyridines have also been isolated a long time ago [3,4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Spectroscopic Characterization of Group 6 Pentacarbonyl(4-substituted pyridine)metal(0) Complexes

Tuç

Morkan

Özkâr

2007

Transition Met Chem

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Carbonyl-metal (M:Cr, Mo, W) derivatives of 4-substituted pyridines [4-methylpyridine (4-mp), 4-tert-butylpyridine (4-tbp) and 4-dimethylaminopyridine (4-dmap)] where the metal center is bonded to the nitrogen atom of the substituted pyridine ring are described. The organometallic complexes, M(CO) 5 L, were synthesized by either the direct reaction of the metal hexacarbonyls or by the thermal substitution of M(CO) 5 (THF) with the pyridine ligands; 4-methylpyridine (1), 4-tert-butylpyridine (2), 4-dimethylaminopyridine (3). The reported complexes were purified by column chromatography and recrystallization. The complexes were all characterized in solution by elemental analysis, MS, ir , 1 H-nmr and 13 C-nmr spectroscopies.

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Isomerization of conjugated dienes via photolysis of metal carbonyl-diene complexes

Cited by 29 publications

References 2 publications

Counterion and solvent effects on the electrode reactions of iron porphyrins

Counterion and solvent effects on the electrode reactions of iron porphyrins

Mechanism of substitution of acetone by alkenes in acetonepentacarbonyltungsten(O)

Synthesis and Spectroscopic Characterization of Group 6 Pentacarbonyl(4-substituted pyridine)metal(0) Complexes

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