Imperial College London
Professor Vernon C. Gibson, FRS

Professor Vernon C. Gibson, FRS

Faculty of Engineering, Department of Materials

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 2783v.gibson

 
 
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Location

 

2.27Bessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Nimitsiriwat:2007:10.1021/ic701061q,
author = {Nimitsiriwat, N and Gibson, VC and Marshall, EL and Takolpuckdee, P and Tomov, AK and White, AJP and Williams, DJ and Elsegood, MRJ and Dale, SH},
doi = {10.1021/ic701061q},
journal = {Inorg. Chem.},
pages = {9988--9997},
title = {Mono- versus Bis-chelate Formation in Triazenide and Amidinate Complexes of Magnesium and Zinc.},
url = {http://dx.doi.org/10.1021/ic701061q},
volume = {46},
year = {2007}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Magnesium and zinc complexes of the monoanionic ligands N,N'-bis(2,6-di-isopropylphenyl)triazenide, L1, N,N'-bis(2,6-di-isopropylphenyl)acetamidinate, L2, and N,N'-bis(2,6-di-isopropylphenyl)tert-butylamidinate, L3, have been synthesized, but only L3 possesses sufficient steric bulk to prevent bis-chelation.  Hence, the reaction of L1H with excess ZnEt2 leads to the isolation of (L1)2Zn, 1; L1H also reacts with Bu2Mg in Et2O to afford (L1)2Mg(Et2O), 2.  Similar reactivity is obsd. for L2H, leading to the formation of (L2)2Zn, 3, and (L2)2Mg, 4.  The reaction of L2H with ZnR2 may also afford the tetranuclear aggregates {(L2)Zn2R2}2O, 5 (R = Me) and 6 (R = Et).  By contrast, the tert-butylamidinate ligand was found to exclusively promote mono-chelation, allowing (L3)ZnCl(THF), 7, [(L3)Zn(μ-Cl)]2, 8, (L3)ZnN(SiMe3)2, 9, (L3)MgiPr(Et2O), 10, and (L3)MgiPr(THF), 11, to be isolated.  X-ray crystallog. analyses of 1, 2, 3, 4, 5, 6, 8, and 10 indicate that the capacity of L3 to resist bis-chelation is due to greater occupation of the metal coordination sphere by the N-aryl substituents. [on SciFinder(R)]
AU  - Nimitsiriwat,N
AU  - Gibson,VC
AU  - Marshall,EL
AU  - Takolpuckdee,P
AU  - Tomov,AK
AU  - White,AJP
AU  - Williams,DJ
AU  - Elsegood,MRJ
AU  - Dale,SH
DO  - 10.1021/ic701061q
EP  - 9997
PY  - 2007///
SN  - 0020-1669
SP  - 9988
TI  - Mono- versus Bis-chelate Formation in Triazenide and Amidinate Complexes of Magnesium and Zinc.
T2  - Inorg. Chem.
UR  - http://dx.doi.org/10.1021/ic701061q
VL  - 46
ER  -
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