Syntheses, crystal structures and mass spectrometry of mononuclear NiII inclusion product and self-assembled [2×1+1×2] NiII3MII (M = Cu, Ni, Co, Fe or Mn) cocrystals derived from N,N'-Ethylenebis(3-ethoxysalicylaldimine)
- Autor(en)
- Michel Fleck, Sohoni Sarkar, Malabika Nayak, Sasankasekhar Mohanta, Ulrich Flörke, Rajesh Koner, Supriya Dutta
- Abstrakt
The syntheses, characterization and structures of a mononuclearnickel(II) compound [NiIIL1_(H2O)] (1) and [2_1+1_2]cocrystals [{NiIIL1MII(H2O)3}{NiIIL1}2](ClO4)2 [M = Cu (2), Ni(3), Co (4), Fe (5) and Mn (6)] derived from the hexadentateSchiff base compartmental ligand N,N_-ethylenebis(3-ethoxysalicylaldimine)(H2L1) have been described in this investigation.Compound 1 is an inclusion product in which thewater molecule is encapsulated in the O4 compartment byforming bifurcated hydrogen bonds. Reactions of 1 with perchloratesalts of copper(II), nickel(II), cobalt(II), iron(II) andmanganese(II) in open atmosphere produce compounds 2-6,which have similar structures. These compounds are[2_1+1_2] tetrametallic systems containing self-assembledand cocrystallized one dinuclear [NiIIL1MII(H2O)3]2+ cationand two mononuclear [NiIIL1] moieties. Among three coordinated water molecules of the dinuclear cores in 2-6, two areencapsulated in the O4 cavity of two mononuclear [NiIIL1]moieties by forming bifurcated hydrogen bonds. Evidently,the formation of inclusion product 1 and dinuclear-mononuclearcocrystals 2-6 are related to the affinity of the O4compartment to encapsulate a water molecule. Electrosprayionization mass spectrometry (ESI+) spectra of compounds 1-6 have been recorded. The mass spectra of 2-6 reveal thatnot only the tetrametallic self-assemblies are ruptured butalso the second metal ion in the dinuclear core leaves the O4cavity. For the NiII3CuII (2) and NiII3FeII (5) compounds, metalsubstitution takes place in solution, resulting in the formationof [CuIIL1Na]+ and [{CuIIL1}2Na]+ for 2 and [1×1+1×1] species[{NiIIL1}×{FeIIIL1}]+ for 5.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- University of Calcutta, Universität Paderborn, Indian Association for the Cultivation of Science
- Journal
- European Journal of Inorganic Chemistry
- Band
- 2010
- Seiten
- 735-743
- Anzahl der Seiten
- 9
- ISSN
- 1434-1948
- Publikationsdatum
- 2010
- Peer-reviewed
- Ja
- ÖFOS 2012
- 1051 Geologie, Mineralogie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/cfbc7f0a-a593-4232-a5f9-bea5c7e5ff08