Crystal structures of seven-coordinate (NH₄)₂[Mn^II(edta)(H₂O)]路3H₂O, (NH₄)₂[Mn^II(cydta)(H₂O)]路4H₂O and K₂[MN^II(hdtpa)]路

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• 作者：X. F. Wang ; J. Gao ; J. Wang ; Zh. H. Zhang ; Y. F. Wang ; L. J. Chen ; W. Sun and X. D. Zhang
• 关键词：manganese(II) chelate ; ethylenediamine ; N ; N ; N′ ; N′ ; tetraacetic acid (H4edta) ; trans ; 1 ; 2 ; cyclohexanediamine ; N ; N ; N′ ; N′ ; tetraacetic acid (H4cydta) ; diethylenetriamine ; N ; N ; N′ ; N″ ; N″ ; pentaacetic acid (H5dtpa)
• 刊名：Journal of Structural Chemistry
• 出版时间：July, 2008
• 出版年：2008
• 期刊代码：26_00224766
• 类别：law
• 卷：49
• 期：4
• 页码：724-731
• 数据来源：sp

摘要

The title compounds, (NH₄)₂[MnII(edta)(H₂O)]路3H₂O (H₄edta = ethylenediamine-N,N,N′,N′-tetraacetic acid), (NH₄)₂[MnII(cydta)(H₂O)]路4H₂O (H₄cydta = trans-1,2-cyclohexanediamine-N,N,N′,N′-tetraacetic acid) and K₂[MnII(Hdtpa)]路3.5H₂O (H₅dtpa = diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid), were prepared; their compositions and structures were determined by elemental analysis and single-crystal X-ray diffraction technique. In these three complexes, the Mn2+ ions are all seven-coordinated and have a pseudomonocapped trigonal prismatic configuration. All the three complexes crystallize in triclinic system in P-1 space group. Crystal data: (NH₄)₂[MnII(edta)(H₂O)]路3H₂O complex, a = 8.774(3) 脜, b = 9.007(3) 脜, c = 13.483(4) 脜, α = 80.095(4)掳, β = 80.708(4)掳, γ = 68.770(4)掳, V = 972.6(5) 脜3, Z = 2, D _c = 1.541 g/cm3, μ = 0.745 mm−1, R = 0.033 and wR = 0.099 for 3406 observed reflections with I ≥ 2σ(I); (NH₄)₂[MnII(cydta)(H₂O)]路4H₂O complex, a = 8.9720(18) 脜, b = 9.4380(19) 脜, c = 14.931(3) 脜, α = 76.99(3)掳, β = 83.27(3)掳, γ = 75.62(3)掳, V = 1190.8(4)脜3, Z = 2, D _c = 1.426 g/cm3, μ = 0.625 mm−1, R = 0.061 and wR = 0.197 for 3240 observed reflections with I ≥ 2σ(I); K₂[MnII(Hdtpa)]路3.5H₂O complex, a = 8.672(3) 脜, b = 9.059(3) 脜, c = 15.074(6) 脜, α = 95.813(6)掳, β = 96.665(6)掳, γ = 99.212(6)掳, V = 1152.4(7) 脜3, Z = 2, D _c = 1.687 g/cm3, μ = 1.006 mm−1, R = 0.037 and wR = 0.090 for 4654 observed reflections with I ≥ 2σ(I).