Dalton Transactions p. 3785 - 3793 (2015)
Update date:2022-08-11
Topics:
Ananthnag, Guddekoppa S.
Mague, Joel T.
Balakrishna, Maravanji S.
Synthesis and late-transition metal complexes of pincer capable cyclodiphosphazane, 2,6-{μ-(tBuN)2P(tBuHN)PO}2C6H3I (1) are described. The condensation of 2-iodoresorcinol with cis-{ClP(μ-NtBu)2PN(H)tBu} produced a difunctional derivative 1 in good yield. The treatment of Ni(COD)2, Pd2(dba)3·CHCl3 or Pt(PPh3)4 with 1 afforded pincer complexes [2,6-{μ-(tBuN)2P(tBuHN)PO}2C6H3MI] (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(μ-X)}2 units, [{{Cu(μ-X)}2}{μ-(tBuN)2P(tBuHN)PO}2C6H3PdI] (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. This journal is
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