Further Insights into the Role of Temperature in the Synthesis of the Lanthanide(III)-Pyrazine-Octacyanotungstate(V) System: an Example of Discrete Materials
Slow diffusion reactions of Ln3+ (Ln = Ce, Eu, Tb) ions, pyrazine, and the [W(CN)8]3– unit at 0 °C produced three discrete coordination compounds [Ln(H2O)5(CH3CN)2][W(CN)8]·0.5pyrazine·CH3CN·2H2O [Ln = Ce (1), Eu (2)] and [Tb(H2O)6(CH3CN)2][W(CN)8]·pyrazine·2CH3CN·3H2O (3). Single crystal X‐ray diff...
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Published in | Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 639; no. 12-13; pp. 2276 - 2281 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English German |
Published |
Weinheim
WILEY-VCH Verlag
01.10.2013
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Slow diffusion reactions of Ln3+ (Ln = Ce, Eu, Tb) ions, pyrazine, and the [W(CN)8]3– unit at 0 °C produced three discrete coordination compounds [Ln(H2O)5(CH3CN)2][W(CN)8]·0.5pyrazine·CH3CN·2H2O [Ln = Ce (1), Eu (2)] and [Tb(H2O)6(CH3CN)2][W(CN)8]·pyrazine·2CH3CN·3H2O (3). Single crystal X‐ray diffraction analysis revealed that compounds 1 and 2 are isomorphous and adopt a rare centrosymmetric tetranuclear square unit, while compound 3 exhibits an ion‐pair moiety, in which unique tetramer water clusters (H2O)4 are involved. The presence of different types of hydrogen‐bonding interactions is responsible for the formation of three‐dimensional supramolecular networks. The isolations of compounds 1–3 provide a further insight into the effect of temperatures on constructions and structures of the lanthanide(III)‐pyrazine‐octacyanotungstate(V) system. |
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Bibliography: | National Natural Science Foundation of China - No. 51072072; No. 51102119; No. 51272095 ArticleID:ZAAC201300070 Natural Science Foundation of Jiangsu Province - No. BK2011518 istex:46DF4C846A7B0782A43EFD03E12B72C5A44823A2 ark:/67375/WNG-ZV7QKCC9-2 |
ISSN: | 0044-2313 1521-3749 |
DOI: | 10.1002/zaac.201300070 |