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Structural and Mössbauer spectral studies of iron(II) complexes of thiazole-containing bidentates
Onggo D.a,b, Scudder M.L.a, Craig D.C.a, Goodwin H.A.a
a School of Chemistry, University of New South Wales, UNSW, Australia
b Department of Chemistry, Institute of Technology Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Comparison of the Mössbauer spectral data for low-spin tris(ligand) iron(II) complexes of the series of bidentate N-N ligands 2,2′-bipyridine (bpy), 4-(pyridin-2-yl)thiazole (4pyt), 2-(pyridin-2-yl)thiazole (2pyt), 4,4′-bithiazole (4bt) and 2,2′-bithiazole (2bt) shows a progressive reduction in the π-acceptor character of the ligand with increase in the number of thiazole rings, the effect being greater for the 4-thiazolyl derivatives. The structure of [Fe(4pyt)3]2+ is remarkably similar to that of [Fe(bpy)3]2+ with an average Fe-N distance of 1.96 Å. Attempts to characterize structurally [Fe(2bt)3]2+ were not successful and led to crystallization of [Fe(2bt)2(H2O)2] [ClO4]2·(2bt)4. In the complex cation, which has the trans structure, the average Fe-N distance is 2.21 Å and the Fe-O distance is 2.08 Å. Mössbauer spectral data indicate a quintet ground state for this species. [Fe(4pyt)3] [BF4]2·H2O: monoclinic, space group P21/c, a 10.213(7), b 13.436(6), c 23.12(1) Å, β 109.65(3)°, Z 4. [Fe(2bt)2(H2O)2] [ClO4]2·(2bt)4: triclinic, space group P1̄, a 10.822(7), b 11.451(8), c 12.945(8) Ä, α 70.31(5), β 69.92(5), γ 63.32(6)°, Z 1. © CSIRO 2000.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Diimine ligands,Iron complexes,Mössbauer spectra,X-Ray crystallography[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1071/ch99128[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]