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A cyclodiphosphazane based pincer ligand, [2,6-{mu-((BuN)-Bu-t)(2)P((BuHN)-Bu-t)PO}(2)C6H3I]: Ni-II, Pd-II, Pt-II and Cu-I complexes and catalytic studies

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Title A cyclodiphosphazane based pincer ligand, [2,6-{mu-((BuN)-Bu-t)(2)P((BuHN)-Bu-t)PO}(2)C6H3I]: Ni-II, Pd-II, Pt-II and Cu-I complexes and catalytic studies
 
Creator ANANTHNAG, GS
MAGUE, JT
BALAKRISHNA, MS
 
Subject CROSS-COUPLING REACTIONS
RUTHENIUM PALLADIUM COMPLEXES
TRANSITION-METAL-COMPLEXES
X-RAY STRUCTURES
ARYL HALIDES
PHOSPHINE OXIDES
COORDINATION
NICKEL
WATER
DERIVATIVES
 
Description Synthesis and late-transition metal complexes of pincer capable cyclodiphosphazane, 2,6-{mu-((BuN)-Bu-t)(2)P-((BuHN)-Bu-t)PO}(2)C6H3I (1) are described. The condensation of 2-iodoresorcinol with cis-{ClP(mu-(NBu)-Bu-t)(2)PN(H)Bu-t} produced a difunctional derivative 1 in good yield. The treatment of Ni(COD)(2), Pd-2(dba)(3)center dot CHCl3 or Pt(PPh3)(4) with 1 afforded pincer complexes [2,6-{mu-((BuN)-Bu-t)(2)P((BuHN)-Bu-t)PO}(2)C6H3MI] (2 M = Ni; 3 M = Pd and 4 M = Pt). The reaction of complex 3 with copper halides resulted in the formation of heterobimetallic complexes bridged by rhombic {Cu(mu-X)}(2) units, [{{Cu(mu-X)}(2)}{mu-((BuN)-Bu-t)(2)P((BuHN)-Bu-t)PO}(2)C6H3PdI] (5 X = I and 6 X = Br). The crystal structures of 1-3, 5 and 6 were established by single X-ray diffraction studies. The palladium complex 3 was tested for catalytic P-arylation of diphenylphosphine oxide (Ph2P(O)H) under microwave irradiation. Moderate to good catalytic activity was observed with aryl bromides.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2016-01-15T06:47:30Z
2016-01-15T06:47:30Z
2015
 
Type Article
 
Identifier DALTON TRANSACTIONS, 44(8)3785-3793
1477-9226
1477-9234
http://dx.doi.org/10.1039/c4dt02810d
http://dspace.library.iitb.ac.in/jspui/handle/100/17970
 
Language en