Uncommon structural features of [Cp2ZrOCPhMo(CO)5]2O, a zirconium-oxygen-zirconium-bridged tetranuclear bis(carbene)metal complex exhibiting a planar .sigma.-framework

Erker, Gerhard; Dorf, Ulrich; Krueger, C.; Tsay, Y.‐H.

doi:10.1021/om00146a043

Cited by 46 publications

(18 citation statements)

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“…perpendicular) allene‐type conformational orientation. Thus, in [(Cp 2 ZrMe) 2 O] ( 12 )15 and related systems,16 the Zr−O−Zr angle is close to linear [ 12 : 174.1(3)°] and the Me−Zr ··· Zr−Me dihedral angle is close to 90°. In contrast, complex 4 favors an almost coplanar arrangement of the Zr−C σ‐vectors.…”

Section: Resultsmentioning

confidence: 94%

(μ‐Methylene)bis(methylzirconocene): Preparation, Molecular Structure, and Thermal Disproportionation

et al. 2004

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The title compound [(µ-CH 2 )(ZrCp 2 Me) 2 ] (4) was prepared by the reaction of [Cp 2 Zr(Cl)Me] (6) with CH 2 (MgBr) 2 (5) or (CH 2 Mg) n (7). It had been expected that the carbon atom bridging the two zirconium atoms of 4 might be a candidate for a planar tetracoordinate carbon atom, but the X-ray crystal structures of two different modifications (crystals 1 and 2) showed it to be non-planar; however, the widened Zr−C−Zr angle of 132.7(1) and 134.0(3)°, respectively, and an unsymmetrical coordination of the central µ-CH 2 group (average: Zr1−CH 2 2.225 Å , Zr2−CH 2 2.242 Å ) indicates a tendency towards planarity. While 4 is relatively stable in THF solution, it disproportionates in toluene solution to give the 1,3-dizirconacyclobutane (Cp 2 ZrCH 2 ) 2 (8) and [Cp 2 ZrMe 2 ] (9), espe-

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Section: Resultsmentioning

confidence: 94%

(μ‐Methylene)bis(methylzirconocene): Preparation, Molecular Structure, and Thermal Disproportionation

et al. 2004

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“…In 9 the ZrϪO bond length is 2.094(2) Å , which is rather long and indicates the absence of a significant OǞZr π-interaction. [18] Consequently, the ZrϪOϪC7 bond angle is in the ''normal'' range at 123.4(2)°.…”

Section: Reaction Of 2-methyl-2-oxazoline With (Butadiene)zirconocenementioning

confidence: 99%

The Reaction of (Butadiene)zirconocene with Imines

Höltke¹,

Erker²,

Kehr³

et al. 2002

Eur. J. Inorg. Chem.

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“…The dihedral angle between the ZrOC(lc) plane and the ZrOS(1)S(2) plane is 53 °, a compromise between maximizing the rr overlap between the lal orbital of the Cp2Zr fragment and the p orbitals of the O atom and minimizing steric repulsions between the phenyl ring and the nearest cyclopentadienyl ring (Silver, Eisenstein & Fay, 1983;Erker, Dorf, Krueger & Tsay, 1987).…”

mentioning

confidence: 99%

Long Zr–S bonds in the structure of the stereochemically nonrigid complex, bis(η5-cyclopentadienyl)(N,N-dimethyldithiocarbamato)phenoxyzirconium(IV)

Femec¹,

Groy²,

Fay³

1991

Acta Crystallogr C

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Uncommon structural features of [Cp2ZrOCPhMo(CO)5]2O, a zirconium-oxygen-zirconium-bridged tetranuclear bis(carbene)metal complex exhibiting a planar .sigma.-framework

Cited by 46 publications

References 1 publication

(μ‐Methylene)bis(methylzirconocene): Preparation, Molecular Structure, and Thermal Disproportionation

(μ‐Methylene)bis(methylzirconocene): Preparation, Molecular Structure, and Thermal Disproportionation

The Reaction of (Butadiene)zirconocene with Imines

Long Zr–S bonds in the structure of the stereochemically nonrigid complex, bis(η5-cyclopentadienyl)(N,N-dimethyldithiocarbamato)phenoxyzirconium(IV)

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