Please use this identifier to cite or link to this item: https://doi.org/10.1021/om900140e
Title: Mixed azido-N-heterocyclic carbene complexes of nickel(II) as a template for new organometallics bearing carbodiimido, tetrazolato, and abnormal tetrazolin-5-ylidene ligands
Authors: Jothibasu, R. 
Huynh, H.V. 
Issue Date: 27-Apr-2009
Citation: Jothibasu, R., Huynh, H.V. (2009-04-27). Mixed azido-N-heterocyclic carbene complexes of nickel(II) as a template for new organometallics bearing carbodiimido, tetrazolato, and abnormal tetrazolin-5-ylidene ligands. Organometallics 28 (8) : 2505-2511. ScholarBank@NUS Repository. https://doi.org/10.1021/om900140e
Abstract: metathesis reaction of the dihalo-bis(carbene) complex trans-[NiBr2(NHC)2] (1, NHC = 1,3- diisopropylbenzimidazolin-2-ylidene) with NaN3 in DMF at elevated temperature afforded the diazido- bis(carbene) complex trans-[Ni(N3)2(NHC)2](2) as a red crystalline solid in a yield of 78%. Complex 2 served as a metal-template for the 1,3-dipolar cycloaddition of 2,6-dimethylphenylisocyanide (CN-Xyl) to the azido ligands to yield the mixed tetrazolato-carbodiimido complex trans-[Ni(CN4-Xyl)(NCN- Xyl)(NHC)2](3) at ambient temperature and the dicarbodiimido complex trans-[Ni(NCN-Xyl)2(NHC)2] (4)at70 °C. Reaction of alkyl isocyanides with 2 at ambient temperature gave the ditetrazolato complexes trans-[Ni(CN4-R)2(NHC)2](5,R = tert-butyl; 6,R = cyclohexyl) in good yields. The novel cationic "abnormal" tetrazolin-5-ylidene complex trans-[Ni(CN4-tBu,Me)2(NHC)2](BF4)2 (7, tBu = tert-butyl) was synthesized by direct methylation of 5 with [Me3O]BF4. All compounds have been fully characterized by multinuclear NMR spectroscopies and ESI mass spectrometry. The solid state molecular structures of complexes 2, 4, 5, and 7 · 2CH2Cl2 have also been confirmed by X-ray diffraction studies. © 2009 American Chemical Society.
Source Title: Organometallics
URI: http://scholarbank.nus.edu.sg/handle/10635/53039
ISSN: 02767333
DOI: 10.1021/om900140e
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

22
checked on Oct 15, 2018

WEB OF SCIENCETM
Citations

22
checked on Oct 15, 2018

Page view(s)

44
checked on Oct 13, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.