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Dipyridyl β-diketonate complexes and their use as metalloligands in the formation of mixed-metal coordination networks

Journal Article


Abstract


  • The iron(III) and aluminium(III) complexes of 1,3-di(4-pyridyl)propane-1,3-dionato (dppd) and 1,3-di(3-

    pyridyl)propane-1,3-dionato (dmppd), [Fe(dppd)3] 1, [Fe(dmppd)3] 2, [Al(dppd)3] 3 and [Al(dmppd)3]

    4 have been prepared. These complexes adopt molecular structures in which the metal centres contain

    distorted octahedral geometries. In contrast, the copper(II) and zinc(II) complexes [Cu(dppd)2] 5 and

    [Zn(dmppd)2] 6 both form polymeric structures in which coordination of the pyridyl groups into the axial

    positions of neighbouring metal centres links discrete square-planar complexes into two-dimensional

    networks. The europium complex [Eu(dmppd)2(H2O)4]Cl·2EtOH·0.5H2O 7 forms a structure containing

    discrete cations that are linked into sheets through hydrogen bonds, whereas the lanthanum complex

    [La(dmppd)3(H2O)]·2H2O 8 adopts a one-dimensional network structure, connected into sheets by

    hydrogen bonds. The iron complexes 1 and 2 act as metalloligands in reactions with silver(I) salts, with

    the nature of the product depending on the counter-ions present. Thus, the reaction between 1 and AgBF4

    gave [AgFe(dppd)3]BF4·DMSO 9, in which the silver centres link the metalloligands into discrete

    nanotubes, whereas reactions with AgPF6 and AgSbF6 gave [AgFe(dppd)3]PF6·3.28DMSO 10 and

    [AgFe(dppd)3]SbF6·1.25DMSO 11, in which the metalloligands are linked into sheets. In all three cases,

    only four of the six pyridyl groups present on the metalloligands are coordinated. The reaction between

    2 and AgNO3 gave [Ag2Fe(dmppd)3(ONO2)]NO3·MeCN·CH2Cl2 12. Compound 12 adopts a layer

    structure in which all pyridyl groups are coordinated to silver centres and, in addition, a nitrate ion

    bridges between two silver centres. A similar structure is adopted by [Ag2Fe(dmppd)3(O2CCF3)]

    CF3CO2·2MeCN·0.25CH2Cl2 13, with a bridging trifluoroacetate ion playing the same role as the nitrate

    ion in 12.

UOW Authors


  •   Burrows, Andrew D. (external author)
  •   Mahon, Mary F. (external author)
  •   Renouf, Catherine (external author)
  •   Richardson, Christopher
  •   Warren, Anna J. (external author)
  •   Warren, John E. (external author)

Publication Date


  • 2012

Citation


  • Burrows, A., Mahon, M., Renouf, C., Richardson, C., Warren, A. & Warren, J. (2012). Dipyridyl β-diketonate complexes and their use as metalloligands in the formation of mixed-metal coordination networks. Dalton Transactions: an international journal of inorganic chemistry, 41 (14), 4153-4163.

Scopus Eid


  • 2-s2.0-84858719537

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3230

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 4153

End Page


  • 4163

Volume


  • 41

Issue


  • 14

Place Of Publication


  • United Kingdom

Abstract


  • The iron(III) and aluminium(III) complexes of 1,3-di(4-pyridyl)propane-1,3-dionato (dppd) and 1,3-di(3-

    pyridyl)propane-1,3-dionato (dmppd), [Fe(dppd)3] 1, [Fe(dmppd)3] 2, [Al(dppd)3] 3 and [Al(dmppd)3]

    4 have been prepared. These complexes adopt molecular structures in which the metal centres contain

    distorted octahedral geometries. In contrast, the copper(II) and zinc(II) complexes [Cu(dppd)2] 5 and

    [Zn(dmppd)2] 6 both form polymeric structures in which coordination of the pyridyl groups into the axial

    positions of neighbouring metal centres links discrete square-planar complexes into two-dimensional

    networks. The europium complex [Eu(dmppd)2(H2O)4]Cl·2EtOH·0.5H2O 7 forms a structure containing

    discrete cations that are linked into sheets through hydrogen bonds, whereas the lanthanum complex

    [La(dmppd)3(H2O)]·2H2O 8 adopts a one-dimensional network structure, connected into sheets by

    hydrogen bonds. The iron complexes 1 and 2 act as metalloligands in reactions with silver(I) salts, with

    the nature of the product depending on the counter-ions present. Thus, the reaction between 1 and AgBF4

    gave [AgFe(dppd)3]BF4·DMSO 9, in which the silver centres link the metalloligands into discrete

    nanotubes, whereas reactions with AgPF6 and AgSbF6 gave [AgFe(dppd)3]PF6·3.28DMSO 10 and

    [AgFe(dppd)3]SbF6·1.25DMSO 11, in which the metalloligands are linked into sheets. In all three cases,

    only four of the six pyridyl groups present on the metalloligands are coordinated. The reaction between

    2 and AgNO3 gave [Ag2Fe(dmppd)3(ONO2)]NO3·MeCN·CH2Cl2 12. Compound 12 adopts a layer

    structure in which all pyridyl groups are coordinated to silver centres and, in addition, a nitrate ion

    bridges between two silver centres. A similar structure is adopted by [Ag2Fe(dmppd)3(O2CCF3)]

    CF3CO2·2MeCN·0.25CH2Cl2 13, with a bridging trifluoroacetate ion playing the same role as the nitrate

    ion in 12.

UOW Authors


  •   Burrows, Andrew D. (external author)
  •   Mahon, Mary F. (external author)
  •   Renouf, Catherine (external author)
  •   Richardson, Christopher
  •   Warren, Anna J. (external author)
  •   Warren, John E. (external author)

Publication Date


  • 2012

Citation


  • Burrows, A., Mahon, M., Renouf, C., Richardson, C., Warren, A. & Warren, J. (2012). Dipyridyl β-diketonate complexes and their use as metalloligands in the formation of mixed-metal coordination networks. Dalton Transactions: an international journal of inorganic chemistry, 41 (14), 4153-4163.

Scopus Eid


  • 2-s2.0-84858719537

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3230

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 4153

End Page


  • 4163

Volume


  • 41

Issue


  • 14

Place Of Publication


  • United Kingdom