DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/11729

Title: Gold(I) complexes of cyclodiphosphazanes cis-{RP(mu-N(t)Bu)}(2): structure of a novel tetranuclear gold(I) macrocycle, [{Au{(o-MeOC(6)H(4)O)P(mu-N(t)Bu)}(2)}(4)](ClO(4))(4)
Authors: CHANDRASEKARAN, P
MAGUE, JT
BALAKRISHNA, MS
Keywords: anion receptors
coordination polymers
phosph(iii)azane macrocycle
heterometallic complexes
copper(i) coordination
reversible conversion
molecular-structures
transition-metal
chemistry
derivatives
Issue Date: 2009
Publisher: ROYAL SOC CHEMISTRY
Citation: DALTON TRANSACTIONS, (28), 5478-5486
Abstract: Reactions of two equivalents of [AuCl(SMe(2))] with cyclodiphosphazanes cis-{RP(m-N(t)Bu)}(2) (1a-1d) produce binuclear gold(I) complexes of the type, [ClAu{RP(m-N(t)Bu)}(2)AuCl] (2 R = OC(6)H(4)OMe-o, 3 R = OCH(2)CH(2)OMe, 4 R = NEt(2), 5 R = NH(t)Bu) in quantitative yield. A similar reaction between cis-{(o-MeOC(6)H(4)O)P(mu-N(t)Bu)}(2) (1a) and [AuCl(SMe2)] in a 1 : 1 molar ratio afforded the mono-nuclear complex [ClAu{(o-MeOC(6)H(4)O) P(mu-N(t)Bu)}(2)] (6). Addition of two equivalents of CuX (X = Br, I) to the chloro derivative 2 leads to the formation of bromo, [BrAu{(o-MeOC(6)H(4)O)-P(mu-N(t)Bu)}(2)AuBr] (7), and iodo, [IAu{(o-MeOC(6)H(4)O) P(mu-N(t)Bu)}(2)AuI] (8), derivatives through halogen exchange reactions. A tetranuclear gold(I) macrocycle [Au{(o-MeOC(6)H(4)O)P(mu-N(t)Bu)}(2)](4)-(ClO(4))(4) (9) and a mononuclear gold(I) complex [Au({(o-MeOC(6)H(4)O)P(mu-N(t)Bu)}(2))(2)]ClO(4) (10) were obtained, respectively, from 1 : 1 and 2 : 1 stoichiometric reactions between 1a and [Au(SMe(2))(2)]ClO(4). Molecular structures of complexes 4, 6, 7, 8 and 9 are confirmed by single-crystal X-ray diffraction studies. Interestingly, the crystal structure of the tetra-nuclear Au(I) macrocycle 9 reveals the encapsulation of one ClO(4)(-) anion inside the bowl shaped macrocyclic cavity through weak Au center dot center dot center dot O and C-H center dot center dot center dot O interactions.
URI: http://dx.doi.org/10.1039/b903075a
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11729
http://hdl.handle.net/10054/11729
ISSN: 1477-9226
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

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

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback