A new mode of carbonyl scrambling. Structure and dynamics of (1,2-diazine)heptacarbonyldiiron(Fe-Fe)

Cotton, F. Albert; Hanson, Brian E.; JAMERSON, J. D.; Stults, B. Ray

doi:10.1021/ja00452a016

Cited by 29 publications

(13 citation statements)

References 5 publications

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“…1. In its general geometric appearence the structure of 4 is similar to that established for (pyridazine)Fe2(CO)7, an analogous complex of a six-membered 1,2-diazine [11]. Both Fe(C0)3-groups are linked by a bridging carbonyl group (CiOi), a metal-metal contact and through the two nitrogen atoms of the ligand.…”

Section: + Permanent Address: Lanchow Institute Of Chemicalmentioning

confidence: 59%

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Albini

Kisch

Chiang

1982

Zeitschrift Für Naturforschung B

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Enneacarbonyldiiron reacts with 3,3,4,4-tetramethyl-1,2-diazetine (L) or its mono-N-oxide (L′) to form complexes (L)Fe(CO)4 (3), (L)Fe2(CO)7 (4), (L)Fe2(CO)6 (5), or (L′)Fe(CO)4 (6), and small amounts of deoxygenated 4 and 5, respectively. Formation and stability of the complexes is compared with those of ligands with smaller and larger ring sizes and discussed in terms of the electronic properties of the ligand lone-pair Orbitals. The molecular structure of 4 is established by X-ray analysis.

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Section: + Permanent Address: Lanchow Institute Of Chemicalmentioning

confidence: 59%

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Albini

Kisch

Chiang

1982

Zeitschrift Für Naturforschung B

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“…The molecular structure (Fig. 2) of complex 9 is very similar to that of the pyridazine-ligated This journal is © The Royal Society of Chemistry 2006 diiron carbonyl compound [{l-(pyridazine-N 1 :N 2 )}Fe 2 (l-CO)(CO) 6 ], 18 except that the diazene ligand bridged by the two Fe atoms is an aryl-substituted phthalazine in the former but a pyridazine in the latter. The distances of the Fe-Fe bond bridged by the l-CO in 9 is 2.5498(10) A ˚, which is somewhat shorter than that in [{l-(pyridazine-N 1 :N 2 )}Fe 2 (l-CO)(CO) 6 ] (2.573(1) A ˚).…”

Section: Resultsmentioning

confidence: 88%

“…The distances of the Fe-Fe bond bridged by the l-CO in 9 is 2.5498(10) A ˚, which is somewhat shorter than that in [{l-(pyridazine-N 1 :N 2 )}Fe 2 (l-CO)(CO) 6 ] (2.573(1) A ˚). 18 The average Fe-l-C(O) distance of 1.980 A ˚is approximately equal to that in [{l-(pyridazine-N 1 :N 2 )}Fe 2 (l-CO)(CO) 6 ] (1.978 A ˚), 18 while the average Fe-N distance (1.993 A ˚) in 9 is significantly longer than that in [{l-(pyridazine-N 1 :N 2 )}Fe 2 (l-CO)(CO) 6 ] (1.955 A ˚). 18 The two Fe atoms lie approximately in the same plane with the phthalazine ring plane.…”

Section: Resultsmentioning

confidence: 99%

Unusual reactions of [{μ-(phthalazine-N²:N³)}Fe₂(μ-CO)(CO)₆] with organolithium reagents. A novel coordination mode of 1,2-diazane diiron carbonyl compounds

Xiao

Chen

2006

Dalton Trans.

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[{Micro-(phthalazine-N2:N3)}Fe2(micro-CO)(CO)6](1) reacts with organolithium reagents, RLi (R = CH3, C6H5, p-CH3C6H4, p-CH3OC6H4, p-CF3C6H4, p-C6H5C6H4), followed by treatment with Me3SiCl to give the novel diiron carbonyl complexes with a saturated N-N six-membered diazane ring ligand, [{C6H4CH(R)NNCH2}Fe2(C=O)(CO)6](2, R = CH3; 3, R = C6H5; 4, R =p-CH3C6H4; 5, R =p-CH3OC6H4; 6, R =p-CF3C6H4; 7, R =p-C6H5C6H4). Compounds 4 and 5 were treated with [(NH4)2Ce(NO3)6] to afford the aryl-substituted phthalazine-coordinated diiron carbonyl compounds [(micro-{1-(p-CH3C6H4)-phthalazine-N2:N3})Fe2(micro-CO)(CO)6](8) and [(micro-{1-(p-CH3OC6H4)-phthalazine-N2:N3})Fe2(micro-CO)(CO)6](9), respectively. The structures of complexes 4 and 9 have been established by X-ray diffraction studies.

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“…1) of 2 is similar to that of precursor complex 1. 11 An apparent difference in the structures of 2 and 1 is the shorter Fe-Fe (2.5097(13) A ˚) bond and the longer Fe-l-C (average 2.0428 A ˚) bonds in 2, as compared to that of 1 (Fe-Fe 2.573(1) 14)C( 15)C( 16)C( 17)N( 2) plane is nearly parallel to the Fe(1)N( 1)N( 2)Fe( 2) plane.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, structure and reactivity of novel pyridazine-coordinated diiron bridging carbene complexes

Xiao

Chen

2005

Dalton Trans.

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[{mu-(Pyridazine-N(1):N(2))}Fe(2)(mu-CO)(CO)(6)](1) reacts with aryllithium reagents, ArLi (Ar = C(6)H(5), m-CH(3)C(6)H(4)) followed by treatment with Me(3)SiCl to give the novel pyridazine-coordinated diiron bridging siloxycarbene complexes [(C(4)H(4)N(2))Fe(2){mu-C(OSiMe(3))Ar}(CO)(6)](2, Ar = C(6)H(5); 3, Ar =m-CH(3)C(6)H(4)). Complex 2 reacts with HBF(4).Et(2)O at low temperature to yield a cationic bridging carbyne complex [(C(4)H(4)N(2))Fe(2)(mu-CC(6)H(5))(CO)(6)]BF(4)(4). Cationic 4 reacts with NaBH(4) in THF at low temperature to afford the diiron bridging arylcarbene complex [(C(4)H(4)N(2))Fe(2){mu-C(H)C(6)H(5)}(CO)(6)](5). Unexpectedly, the reaction of 4 with NaSCH(3) under similar conditions gave the bridging arylcarbene complex 5 and a carbonyl-coordinated diiron bridging carbene complex [Fe(2){mu-C(SCH(3))C(6)H(5)}(CO)(7)](6), while the reaction of NaSC(6)H(4)CH(3)-p with 4 affords the expected bridging arylthiocarbene complex [(C(4)H(4)N(2))Fe(2){mu-C(SC(6)H(4)CH(3)-p)C(6)H(5)}(CO)(6)](7), which can be converted into a novel diiron bridging carbyne complex with a thiolato-bridged ligand, [Fe(2)(mu-CC(6)H(5))(mu-SC(6)H(4)CH(3)-p)(CO)(6)](8). Cationic can also react with the carbonylmetal anionic compound Na(2)[Fe(CO)(4)] to yield complex 5, while the reactions of 4 with carbonylmetal anionic compounds Na[M(CO)(5)(CN)](M = Cr, Mo, W) produce the diiron bridging aryl(pentacarbonylcyanometal)carbene complexes [(C(4)H(4)N(2))Fe(2)-{mu-C(C(6)H(5))NCM(CO)(5)}(CO)(6)](9, M = Cr; 10, M = Mo; 11, M = W). The structures of complexes 2, 5, 6, 8, and 9 have been established by X-ray diffraction studies.

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A new mode of carbonyl scrambling. Structure and dynamics of (1,2-diazine)heptacarbonyldiiron(Fe-Fe)

Cited by 29 publications

References 5 publications

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Unusual reactions of [{μ-(phthalazine-N²:N³)}Fe₂(μ-CO)(CO)₆] with organolithium reagents. A novel coordination mode of 1,2-diazane diiron carbonyl compounds

Synthesis, structure and reactivity of novel pyridazine-coordinated diiron bridging carbene complexes

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A new mode of carbonyl scrambling. Structure and dynamics of (1,2-diazine)heptacarbonyldiiron(Fe-Fe)

Cited by 29 publications

References 5 publications

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Transition Metal Complexes of Diazenes, XVII [1]. Reactions of 1,2-Diazetines and 1,2-Diazetine-N-oxides with Iron Carbonyls

Unusual reactions of [{μ-(phthalazine-N2:N3)}Fe2(μ-CO)(CO)6] with organolithium reagents. A novel coordination mode of 1,2-diazane diiron carbonyl compounds

Synthesis, structure and reactivity of novel pyridazine-coordinated diiron bridging carbene complexes

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Unusual reactions of [{μ-(phthalazine-N²:N³)}Fe₂(μ-CO)(CO)₆] with organolithium reagents. A novel coordination mode of 1,2-diazane diiron carbonyl compounds