Volume 627, Issue 8 pp. 1990-1992
Article

A New Succinato-bridged Supramolecular Helix Chain: Crystal Structure of [Mn(H2O)2(bpy)(C4H4O4)] · H2O with bpy = 2,2′-bipyridine

Yue-Qing Zheng Prof. Dr.

Corresponding Author

Yue-Qing Zheng Prof. Dr.

Ningbo/P. R. China, Municipal Key Laboratory of Inorganic Materials Chemistry, Institute for Solid State Chemistry, Ningbo University

Institute for Solid State Chemistry, Ningbo University, Ningbo, Zhejiang, 315211 P.R. China, Telefax: Int. +5 74/87 60 07 47Search for more papers by this author
Jian-Li Lin

Jian-Li Lin

Ningbo/P. R. China, Municipal Key Laboratory of Inorganic Materials Chemistry, Institute for Solid State Chemistry, Ningbo University

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Abstract

en

Yellow crystals of [Mn(H2O)2(bpy)(C4H4O4)] · H2O were obtained by the reaction of 2,2′-bipyridine, succinic acid, MnSO4 · H2O and Na2CO3 in an aqueous methanol solution. The crystal structure (monoclinic, P21/c (no. 14), a = 8.294(1), b = 11.556(1), c = 17.064(1)Å, β = 95.181(6)°, Z = 4, R = 0.0349, wR2 = 0.0887) consists of 1D supramolecular helix chains equation image[Mn(H2O)2(bpy)(C4H4O4)2/2] and hydrogen bonded H2O molecules. The Mn atoms are octahedrally coordinated by two N atoms of one bidentate chelating bpy ligand and four O atoms of two H2O molecules and two bis-monodentate bridging succinato ligands with d(Mn–O) = 2.139–2.237Å and d(Mn–N) = 2.268, 2.281 Å. The helix chains are held together by π-π stacking interactions and hydrogen bonds.

Abstract

de

Eine neue succinat-verbrückte supramolekulare helikale Kette: Kristallstruktur von [Mn(H2O)2(bpy)(C4H4O4)] · H2O mit bpy = 2,2′-Bipyridyl

Gelbe Kristalle von [Mn(H2O)2(bpy)(C4H4O4)] · H2O wurden durch Reaktion von 2,2′-Bipyridin, Bernsteinsäure, MnSO4 · H2O und Na2CO3 in einer wäßrigen Methanol-Lösung erhalten. Die Kristallstruktur (monoklin, P21/c (Nr. 14), a = 8.294(1), b = 11.556(1), c = 17.064(1) Å, β = 95.181(6)°, Z = 4, R = 0.0349, wR2 = 0.0887) besteht aus eindimensional-supramolekularen helikalen Ketten equation image[Mn(H2O)2(bpy)(C4H4O4)2/2] und über Wasserstoffbrücken verbundene Wassermoleküle. Die Manganatome sind oktaedrisch von zwei Stickstoffatomen eines zweizähnig-chelatisierenden bpy-Liganden und vier Sauerstoffatomen von zwei Wassermolekülen und zwei bis-einzähnig-überbrückenden Succinatliganden koordiniert mit d(Mn–O) = 2,139–2,237 Å und d(Mn–N) = 2,268–2,281 Å. Die helikalen Ketten werden durch π-π-Wechselwirkungen und Wasserstoffbrücken zusammengehalten.

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