Coordination chemistry of the water-soluble ligand TPPTP and formation of a [Mo(CO)5(m-TPPTP)] monolayer on an alumina surface

被引:20
作者
Harper, BA
Knight, DA
George, C
Brandow, SL
Dressick, WJ
Dalcey, CS
Schull, TL
机构
[1] Loyola Univ, Dept Chem, New Orleans, LA 70118 USA
[2] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA
[3] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA
关键词
D O I
10.1021/ic025862a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Phosphonate and phosphonic acid functionalized phosphine complexes of platinum(II) were prepared via direct reaction of the ligands with K2PtCl4 in water. Either cis or trans geometries were found depending on the nature of the ligand. The crystal structure of P(3-C6H4PO3H2)(3).2H(2)O (6b) (triclinic, P (1) over bar, a = 8.3501(6) Angstrom, b = 10.1907(6) Angstrom, c = 14.6529(14) Angstrom, alpha = 94.177(6)degrees, beta = 105.885(6)degrees, gamma = 108.784(5)degrees, Z = 2) shows a layered arrangement of the phosphonic acid. The phosphonodiamide complex cis-[PtCl2(P[4-C6H4PO{N(CH3}(2)}](3))(2)].3H(2)O (10) was synthesized in 89% yield and hydrolyzed to the phosphonic acid complex using dilute HCl. Aqueous phase and silica gel supported catalytic phosphonylation of phenyl triflate using palladium phosphine complexes was achieved. A molybdenum complex, Mo(CO)(5){P(3-C6H4PO3H2)(3)} (11), was synthesized in situ and grafted to an alumina surface. XPS, RBS, and AFM studies confirm the formation of a monolayer of 11 on the alumina surface.
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页码:516 / 524
页数:9
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