Journal ArticleDOI
Synthesis of new amido, alkoxo and η-cyclopentadienyl derivatives of molybdenum
TLDR
The new compounds have been prepared and characterised The new compounds as mentioned in this paper, which indicate the crystal structure has been determined and characterisation of the crystal structures has been carried out and the new compounds will be prepared and characterized.Abstract:
The new compounds
[Mo(η-Me
3
SiC
5
H
4
)(NMe
2
)
3
]
,
[Mo(η-Me
3
SiC
5
H
4
)
2
H
2
],
[Mo(η-C
9
H
7
)(NMe
2
)
3
],
[Mo(η-C
5
H
5
)(S
2
CNMe
2
)
3
],
[Mo(η-C
5
H
5
)(OPr
i
)(NMe
2
)
2
],
[Mo(η-C
5
H
5
)(OPr
i
)
2
(NMe
2
)],
[Mo(η-C
5
H
5
)(OBu
t
)(NMe
2
)
2
],
[Mo(η-C
5
H
5
)(OBu
t
)
2
(NMe
2
)],
[Mo(η-C
5
H
5
)(OC
6
H
2
Me-4-
Bu
t
2
-2,6)(NMe
2
)
2
],
[Mo(η-C
5
H
5
)(OC
6
H
3
Me-6-
Bu
t
-2)(NMe
2
)
2
],
[Mo(η-C
5
H
5
)(OC
6
H
4
Bu
t
-p)(NMe
2
)
2
],
[Mo(OR)
4
(HNMe
2
)
2
]
(R = p-MeC
6
H
4
* or
p-Bu
t
C
6
H
4
) and
[Mo(OC
6
H
4
Me-p)
4
(NMe
2
)
2
]* have been prepared and characterised The
asterisk indicates the crystal structure has been determinedread more
Citations
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Journal ArticleDOI
Activation of η5-Cyclopentadienyl Ligands toward Nucleophilic Attack through η5 → η3 Ring Slippage. Kinetics, Thermodynamics, and NMR Spectroscopy
TL;DR: In this article, the authors studied the reaction of CF3SO3 with PMe3 in acetone and showed that the reaction products formed are fluxional in solution due to an intramolecular enantiomeric equilibrium likely proceeding through a five-coordinate C5H5 intermediate.
Journal ArticleDOI
Intramolecular activation of a disila[2]molybdenocenophanedihydride: synthesis and structure of a [1],[1]metalloarenophane.
TL;DR: The synthesis and full characterization of tetramethyldisila is reported and its conversion into an unprecedented twofold-bridged metalloarenophane is reported.
Journal ArticleDOI
Kinetics and Mechanism of Nucleophilic Substitutions on Coordinated Polyenes and Polyenyls. 3.1 Activation of η5-Cyclopentadienyl Ligands toward Nucleophilic Attack through η5 → η3 Ring Slippage and a Comparison with Reaction at C5H4O in [Ru(η5-C5H5)(η4-C5H4O)(L)]+ (L = CH3CN, Pyridine, Thiourea)
Walter Simanko,Walter Tesch,Valentin N. Sapunov,Kurt Mereiter,Roland M. Schmid,Karl Kirchner,John Coddington,Scot Wherland +7 more
TL;DR: In this article, the hapticity of the C5H5 ligand is changed from η5 to η3 while forming an additional Ru−P bond, suggesting a preequilibrium between the two species.
Journal ArticleDOI
C–H activation by a terminal imidoiron(III) complex to form a cyclopentadienyliron(II) product
TL;DR: In this paper, the authors describe the apparent hydrogen atom transfer from cyclopentadiene (CpH) to the isolable imidoiron(III) complex LMeFeNAd (LMe = 2,4-bis(2,6-diisopropylphenylimido)pent-3-yl; Ad = 1-adamantyl) in the presence of 4-tert-butylpyridine (tBupy).
References
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Journal ArticleDOI
A semi-empirical method of absorption correction
TL;DR: An extension of Furnas's method is described in this paper, where the variation of intensity of an axial reflection as the crystal is rotated about the goniometer axis is used to give a curve of relative transmission T against azimuthal angle ϕ for the corresponding reciprocal lattice level.
Journal ArticleDOI
Efficient new synthetic route to bidentate, monomeric cyclopentadienyl-amide complexes of Group 4 transition metals: synthesis and characterization of the zirconium and hafnium complexes [[.eta.5:.sigma.-C5H4(CH2)3NMe]MX2(NHMe2)] (X = Cl, I, M = Zr; X = I, M = Hf) and [[.eta.5:.sigma.-C5H4(CH2)3NMe]ZrX2] (X = NMe2, CH2Ph, CH2SiMe3, BH4) and molecular structure of [[.eta.5:.sigma.-C5H4(CH2)3NMe]ZrCl(CH2Ph)]2
TL;DR: The synthesis of cyclopentadiene C5H5CH2CH2 CH2N(H)Me (2, HCpNH) is described in this paper, where the synthesis of amine-substituted cyclopenadiene is described.
Journal ArticleDOI
The general use of i.r. spectral criteria in discussions of the bonding and structure of metal dithiocarbamates
TL;DR: In this paper, normal coordinate analyses of a series of chromium (III) dithiocarbamates are reported and the Ugo-Bonati distinguishing monodentate and bidentate bonding by the number of observed bands in the 1000 cm −1 region is shown to be valid, provided comparison is made between complexes containing the same alkyl group.
Journal ArticleDOI
Synthesis and characterization of bridged half-sandwich amides of titanium and zirconium
TL;DR: The homoleptic metal amides Ti(NEt 2 ) 4, Ti(NMe 2 ) 2, and Zr( NEt 4 ) 4 react with silyl-substituted cyclopentadienes (1−3 ) and the indene 4 to yield the new half-sandwich complexes 8−16 of type Me 2 Si[CpR][NR′]M[NR′' 2 )2 (M = Ti, Zr) as mentioned in this paper.
Journal ArticleDOI
First amido-functionalized niobium and tantalum complexes of the ansa-structural type: synthesis and photochemical SiN bond cleavage
TL;DR: In this paper, the photo-induced rearrangement at room temperature yielded the imido complexes [η5-C5H4]-Si(CH3)2-N(CH 3)2]M(=NR)[N(Ch3) 2]2]2 as a result of SiN bond cleavage.