Crystal Structures of (2-oxo-2H-Quinaxalin-1-yl)-acetic Acid and its Cobalt and Nickel Complexes and Their Comparison with (1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-acetic Acid
作者:Anirban Karmakar、Jubaraj B. Baruah
DOI:10.1007/s10870-008-9384-0
日期:2008.6
The crystal structures of (2-oxo-2H-quinaxalin-1-yl)-acetic acid and its cobalt and nickel complexes are determined. The (2-oxo-2H-quinaxalin-1-yl)-acetic acid (1) crystallizes in orthorhombic, Pbca, a = 12.8571(11) Å, b = 9.4267(8) Å, c = 15.0095(13) Å, the cobalt complex of (2-oxo-2H-quinaxalin-1-yl)-acetic acid (2) crystallizes as dihydrate in triclinic, P-1 space group with a = 4.81150(10) Å, b = 11.8631(2) Å, c = 12.4867(3) Å, α = 71.7800(10)°, β = 79.2490(10)°, γ = 84.9020(10)° whereas the nickel complex of (2-oxo-2H-quinaxalin-1-yl)-acetic acid (3) crystallizes in monoclinic, P21/c space group with a = 14.9210(5) Å, b = 4.81730(10) Å, c = 15.7672(5) Å. and β = 99.823(2)°. The crystal structure of the ligand and the complexes are compared with structures of (1,3-dioxo-1,3-dihydro-isoindol-2-yl)-acetic acid and its cobalt and nickel complexes. The crystal structures of (2-oxo-2H-quinaxalin-1-yl)-acetic acid and its nickel and cobalt complexes are compared with (1,3-dioxo-1,3-dihydro-isoindol-2-yl)-acetic acid and its corresponding complexes with nickel(II) and cobalt(II).
确定了(2-oxo-2H-quinaxalin-1-yl)-乙酸及其钴和镍配合物的晶体结构。(2-氧代-2H-喹喔啉-1-基)-乙酸 (1) 结晶为正菱形,Pbca,a = 12.8571(11) 埃,b = 9.4267(8) 埃,c = 15.0095(13) Å, (2-oxo-2H-quinaxalin-1-yl)-acetic acid (2) 的钴络合物结晶为二水合物,三linic,P-1 空间群,a = 4.81150(10) Å, b = 11.8631(2) Å, c = 12.4867(3) Å, α = 71.7800(10)°, β = 79.2490(10)°, γ = 84.9020(10)° 而 (2-oxo-2H-quinaxalin-1-yl)-acetic acid (3) 的镍络合物结晶为单斜晶系,P21/c 空间群,a = 14.9210(5) 埃,b = 4.81730(10) 埃,c = 15.7672(5) 埃,β = 99.823(2)°。配体和配合物的晶体结构与(1,3-二氧代-1,3-二氢-异吲哚-2-基)-乙酸及其钴和镍配合物的结构进行了比较。将(2-氧代-2H-喹喔啉-1-基)-乙酸及其镍和钴配合物的晶体结构与(1,3-二氧代-1,3-二氢-异吲哚-2-基)-乙酸及其与镍(II)和钴(II)的相应配合物的晶体结构进行了比较。