Crystal architecture and magnetic properties of four transition-metal adipate coordination polymers
Φόρτωση...
Ημερομηνία
Συγγραφείς
Bakalbassis, E. G.
Korabik, M.
Michailides, A.
Mrozinski, J.
Raptopoulou, C.
Skoulika, S.
Terzis, A.
Tsaousis, D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Royal Society of Chemistry
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Journal of the Chemical Society-Dalton Transactions
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The crystal structures have been determined and the magnetic properties investigated for four novel [M-II(A)(H2O)(m)](n) polymeric complexes, where M-II=Cd-II, Cu-II or Ni-II, m=2-4 and A=adipate dianion. In [Cd(A)(H2O)(2)](n) 1, [Cu(A)(H2O)(2)](n) 2 and [Ni(A)(H2O)(4)](n) 4 the combination of the metal cation with the dicarboxylate ligand leads to the formation of infinitive chains; still the co-ordinated water molecules and the carboxylate oxygen atoms collaborate to hydrogen-bond the chains into 3-D structures. Each cadmium(II) and nickel(II) ion in 1 and 4 is coordinated in an octahedral geometry to carboxylate and water molecules. The coordination sphere around copper(II) ions in 2 is square planar. The structure of 3, [Cu-3(A)(2)(OH)(2)(H2O)(4)](n), is made up of ribbons linked to neighboring ones by hydrogen bonds. Each ribbon is composed of 2 crystallographically independent metal centers, Cu(1) and Cu(2), which exhibit octahedral and square pyramidal coordination geometries, respectively. Weak antiferromagnetic interactions were observed for 2, and 3 (singlet-triplet energy gap values of -2.3 and -54.5 cm(-1), respectively) and isolated nickel(II) ions for 4. An interpretation of the magnetic behavior was attempted. The strategy for the assembly of 1-D metal-organic chains into 3-D structures, with the use of coordinated water molecules as hydrogen bond donors and carboxylate oxygens as hydrogen bond acceptors, is also discussed.
Περιγραφή
Λέξεις-κλειδιά
coordination chemistry, crystal engineering, hydrogen bonding, magnetic properties, polymers, molecular-solids, hydrogen-bonds, porous solids, complexes, copper(ii), design, strategies, chemistry, construction, patterns
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000167499600016
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας