Complexes of 2,5-dihydroxy-1,4-benzoquinone and chloranilic acid with second and third row transition elements

The synthesis of new 2,5-dihydroxy-1,4-benzoquinone (H2DHBQ) and chloranilic acid (H2CA) complexes cis-[Mo2O5L2]2− (L = DHBQ, CA), [W2O5(DHBQ)2]2−, [WO2(CA)2]2−, trans-[UO2(DHBQ)]·H2O, and trans-[UO2(CA)2]2− is described. Raman, i.r., 1H and 13C n.m.r spectra of the ligands and their complexes are reported and their structures discussed.

[1]  R. Holwerda,et al.  Spectroscopy and linkage isomerization kinetics of (chloranilato)bis(phosphine)palladium(II) compounds , 1989 .

[2]  F. Lloret,et al.  Synthesis and magnetic properties of binuclear iron(III) complexes with oxalate, 2,5-dihydroxy-1,4-benzoquinone dianion, and squarate as bridging ligands. Crystal structure of (.mu.-1,3-squarato)bis[(N,N'-ethylenebis(salicylideneaminato))(methanol)iron(III)] , 1990 .

[3]  V. Gladyshev,et al.  Crystal Structure of Formate Dehydrogenase H: Catalysis Involving Mo, Molybdopterin, Selenocysteine, and an Fe4S4 Cluster , 1997, Science.

[4]  R. Holwerda,et al.  Linkage isomerism in palladium(II)-chloranilate complexes. Synthesis and mechanistic studies of bis(acetonitrile)(chloranilato)palladium(II) and bis(triphenylphosphine)(chloranilato)palladium(II) , 1988 .

[5]  J. Galy,et al.  Extremely weak magnetic exchange interactions in terpy-containing copper(II) dimer. Crystal and molecular structure of Cu(terpy)(CA).H2O and [Cu2(terpy)2(CA)](PF6)2 complexes (terpy = 2,2':6',2"-terpyridine, CA = dianion of chloranilic acid) , 1988 .

[6]  L. Oro,et al.  Synthesis and properties of rhodium(I) chloranilate and 2,5-dihydroxy-1,4-benzoquinonate complexes. Crystal structures of the binuclear [Rh2(.mu.-CA)(cod)2] and tetranuclear [Rh4(.mu.-CA)2(cod)4] complexes (CA = chloranilate anion) , 1993 .

[7]  M. Perec,et al.  Spectroscopic characterization of anionic tris(N,N-dialkyldithiocarbamate) complexes of zinc(II) and cadmium(II) , 1989 .

[8]  R. Holwerda,et al.  Linkage Isomerization Equilibria in (Chloranilato)palladium(II) Complexes with Amine Ligands. Crystal Structure of (Chloranilato)bis(acetonitrile)palladium(II) , 1995 .

[9]  W. Griffith,et al.  Complexes of 3-hydroxypyridin-2-one and 1,2-dimethyl-3-hydroxypyridin-4-one with second and third row elements of groups 6, 7 and 8 , 1992 .

[10]  W. Griffith,et al.  Complexes of esculetin with second and third row transition elements , 1992 .

[11]  J. Zubieta,et al.  Synthesis and chemical characterization of complexes containing semiquinone units bridged by pentaoxodimolybdate groups. Structural and electrochemical studies of [(n-C4H9)4N]2[Mo4O10(C6H2O4)2] and [(n-C4H9)4N]3[Mo6O15(C6O6)2] and of an analogous tetraoxydibenzofuran complex, [(n-C4H9)4N]2[Mo4O10(C1 , 1989 .