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Ralf Rohlfing

Bielefeld University

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Archive | 1993

Self-assembly processes leading to “extremely” large discrete molecular species with nano-dimensions and novel properties

Achim Müller; Erich Krickemeyer; Stephan Dillinger; Hartmut Bögge; A. Proust; W Plass; Ralf Rohlfing

kg were reported, respectively [7]. However, these values should be considered with utmost care, since no clear differentiation between water-soluble and -insoluble bromine has been made. The present study reveals that aquatic sediments act both as sinks and sources for bromine. They therefore play an important role in the cycling of this element in the biogeosphere, which, after its (partial) release from the organic matter of the sediments into the interstitial water, will finally reach the river or lake by diffusion and/or compaction pressure.

Inorganic Chemistry | 1997

Polyoxovanadates: High-Nuclearity Spin Clusters with Interesting Host−Guest Systems and Different Electron Populations. Synthesis, Spin Organization, Magnetochemistry, and Spectroscopic Studies

Achim Müller; Roberta Sessoli; Erich Krickemeyer; Hartmut Bögge; Jochen Meyer; Dante Gatteschi; Luca Pardi; Jörg Westphal; Kai Hovemeier; Ralf Rohlfing; Joachim Döring; Frank Hellweg; Christian Beugholt; Marc Schmidtmann

Angewandte Chemie | 1990

Topologically Interesting Cages for Negative Ions with Extremely High “Coordination Number”: An Unusual Property of V-O Clusters†‡

Achim Müller; Michael Penk; Ralf Rohlfing; Erich Krickemeyer; Joachim Döring

Angewandte Chemie | 1993

Control of the Linkage of Inorganic Fragments of VO Compounds: From Cluster Shells as Carcerands via Cluster Aggregates to Solid‐State Structures

Achim Müller; Ralf Rohlfing; Erich Krickemeyer; Hartmut Bögge

Zeitschrift für anorganische und allgemeine Chemie | 1994

New Perspectives in Polyoxometalate Chemistry by isolation of compounds containing very large moieties as transferable building blocks: (NMe4)5[As2Mo8V4AsO40] · 3H2O, (NH4)21[H3Mo57V6(NO)6O183(H2O)18] · 65 H2O, (NH2Me2)18(NH4)6[Mo57V6(NO)6O183(H2O)18] · 14 H2O, and (NH4)12[Mo36(NO)4O108(H2O)16] · 33 H2O

Achim Müller; Erich Krickemeyer; Stephan Dillinger; Hartmut Bögge; Winfried Plass; Anna Proust; L Dloczik; Carsten Menke; Jochen Meyer; Ralf Rohlfing

Angewandte Chemie | 1991

Formation of a Cluster Sheath around a Central Cluster by a “Self-Organization Process”: the Mixed Valence Polyoxovanadate [V34O82]10⊖†

Achim Müller; Ralf Rohlfing; Joachim Döring; Michael Penk

Angewandte Chemie | 1991

Template-Controlled Formation of Cluster Shells or a Type of Molecular Recognition: Synthesis of [HV22O54(ClO4)]6− and [H2V18O44(N3)]5−†

Achim Müller; Erich Krickemeyer; Michael Penk; Ralf Rohlfing; Anja Armatage; Hartmut Bögge

Angewandte Chemie | 1992

A Novel Host/Guest System with a Nanometer Large Cavity for Anions and Cations: [2NH 4+, 2Cl− ⊂ V14O22(OH)4(H2O)2‐(C6H5PO3)8]6−

Achim Müller; Kai Hovemeier; Ralf Rohlfing

Angewandte Chemie | 1990

Topologisch interessante Käfige für negative Ionen mit extrem hoher „Koordinationszahl”: Eine ungewöhnliche Eigenschaft von V-O-Clustern†‡

Achim Müller; Michael Penk; Ralf Rohlfing; Erich Krickemeyer; Joachim Döring

Angewandte Chemie | 1993

Steuerung der Verknüpfung anorganischer Einheiten in V‐O‐Verbindungen: von Clusterhüllen als molekularen Containern über Clusteraggregate zu Festkörperstrukturen

Achim Müller; Ralf Rohlfing; Erich Krickemeyer; Hartmut Bögge

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Achim Müller

Bielefeld University

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Erich Krickemeyer

Bielefeld University

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Hartmut Bögge

Bielefeld University

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Michael Penk

Bielefeld University

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Stephan Dillinger

Bielefeld University

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Anja Armatage

Bielefeld University

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Jochen Meyer

Bielefeld University

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Winfried Plass

University of Jena

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Anna Proust

University of Paris

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Dante Gatteschi

University of Florence

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