The Molecular Structure of the Complex of Cyclooctatetraene and Iron Pentacarbonyl

Fleischer, Everly B.; Stone, Audrey L.; Dewar, Robert; Wright, J. D.; Keller, C. E.; Pettit, R.

doi:10.1021/ja00965a065

Cited by 64 publications

(22 citation statements)

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“…The azulene carbonyl complex cis (η 5 ,η 3 -C 10 H 8 )Fe 2 (CO) 5 02 (Figure 11e) has an Fe−Fe single bond of length 2.782 Å (Churchill 388 ). The complex 03 (Pettit 389 ) has a cyclooctatetraene (COT) ligand with an Fe−Fe single bond of length 2.742 Å.…”

Section: Binuclear Iron Carbonyl Complexes With Fused Carbocyclic Lig...mentioning

confidence: 99%

Metal–Metal (MM) Bond Distances and Bond Orders in Binuclear Metal Complexes of the First Row Transition Metals Titanium Through Zinc

2018

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This survey of metal–metal (MM) bond distances in binuclear complexes of the first row 3d-block elements reviews experimental and computational research on a wide range of such systems. The metals surveyed are titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, and zinc, representing the only comprehensive presentation of such results to date. Factors impacting MM bond lengths that are discussed here include (a) the formal MM bond order, (b) size of the metal ion present in the bimetallic core (M2) n+, (c) the metal oxidation state, (d) effects of ligand basicity, coordination mode and number, and (e) steric effects of bulky ligands. Correlations between experimental and computational findings are examined wherever possible, often yielding good agreement for MM bond lengths. The formal bond order provides a key basis for assessing experimental and computationally derived MM bond lengths. The effects of change in the metal upon MM bond length ranges in binuclear complexes suggest trends for single, double, triple, and quadruple MM bonds which are related to the available information on metal atomic radii. It emerges that while specific factors for a limited range of complexes are found to have their expected impact in many cases, the assessment of the net effect of these factors is challenging. The combination of experimental and computational results leads us to propose for the first time the ranges and “best” estimates for MM bond distances of all types (Ti–Ti through Zn–Zn, single through quintuple).

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Section: Binuclear Iron Carbonyl Complexes With Fused Carbocyclic Lig...mentioning

confidence: 99%

Metal–Metal (MM) Bond Distances and Bond Orders in Binuclear Metal Complexes of the First Row Transition Metals Titanium Through Zinc

2018

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“…and [(CpRu) 2 m-cot] which contain intermetallic distances of more than 290 pm, a h 4 :h 4 bonding mode is found, whereas in [{Fe 2 (CO) 5 }m-cot], [28] [3] [(CpM) 2 m-cot] (M V, Cr) [19] in which the metal ± metal distance is less than 290 pm, all have the cot entity bound in a h 5 :h 5 fashion. Another remarkable feature of the synfacially constructed dinuclear m-cot complexes is the urge of homometal complexes to form metal ± metal bonds, whereas heterometal complexes tend to avoid metal ± metal bonds if the electronic requirement can be sufficiently fulfilled by structural rearrangements, as can be seen for [ (CpRu) [4a]…”

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confidence: 98%

Synfacially Structured [(CpRu)2μ-cot]—What a Difference the Coordination Side Makes!

et al. 1999

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“…13,14 Further experimental work is needed on the metastable C 8 H 8 Fe 2 (CO) 6 isomers obtained under mild conditions, which were reported 50 years ago 13 and apparently not studied recently.…”

Section: -Cis-s (C 2v )mentioning

confidence: 99%

Binuclear cyclooctatetraene–iron carbonyl complexes: examples of fluxionality and valence tautomerism

et al. 2016

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The Molecular Structure of the Complex of Cyclooctatetraene and Iron Pentacarbonyl

Cited by 64 publications

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Metal–Metal (MM) Bond Distances and Bond Orders in Binuclear Metal Complexes of the First Row Transition Metals Titanium Through Zinc

Metal–Metal (MM) Bond Distances and Bond Orders in Binuclear Metal Complexes of the First Row Transition Metals Titanium Through Zinc

Synfacially Structured [(CpRu)2μ-cot]—What a Difference the Coordination Side Makes!

Binuclear cyclooctatetraene–iron carbonyl complexes: examples of fluxionality and valence tautomerism

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