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Amalgamating metalloligands with coordination networks

Constable, Edwin C. and Zhang, Guoqi and Housecroft, Catherine E. and Zampese, Jennifer A.. (2010) Amalgamating metalloligands with coordination networks. Dalton Transactions, 39 (8). pp. 1941-1947.

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Official URL: http://edoc.unibas.ch/dok/A5841487

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Abstract

The O4-cavity in [Cu{(R,R)-1}] ((R,R)-H21 = 1,6-bis(3-ethoxy-2-hydroxyphenyl)-(3R,4R)-(−)-cyclohexane-1,2-diyl-2,5-diazahexa-1,5-diene) binds HgBr2 to give P- and M-[Cu{(R,R)-1}HgBr2]. In the solid state, there is no diastereoselectivity with respect to the handedness of the helical twist adopted by the coordinated Schiff base ligand and [Cu{(R,R)-1}HgBr2] crystallizes with two independent molecules possessing M- and P-chirality, respectively, in the asymmetric unit. Single crystal structural data confirm that the same phenomenon is observed when [Ni{(R,R)-1}] is treated with HgBr2or Hg(CN)2. However, when an excess of Hg(NO3)2·H2O reacts with [Cu{(R,R)-1}], C-mercuration occurs in both 3-ethoxy-2-hydroxyphenyl rings in addition to the coordination of a Hg(NO3)2 unit within the O4-cavity of [Cu{(R,R)-1}]. This results in the formation of a two-dimensional coordination polymer network. The direct C-mercuration of a coordinated Schiff base ligand is not unique to the ligand in [Cu{(R,R)-1}], but also occurs during the reaction of [Cu(3)] (H23 = 1,7-bis(3-ethoxy-2-hydroxyphenyl)- 2,6-diazahepta-1,6-diene) with Hg(NO3)2·H2O proceeds in an analogous manner with C-mercuration occurs para to the phenolic oxygen atom.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Zhang, Guoqi and Zampese, Jennifer Ann
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1477-9226
e-ISSN:1477-9234
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:08 May 2017 07:37
Deposited On:14 Sep 2012 06:55

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