Incorporation of hexanuclear mn(II,III) carboxylate clusters with a {Mn6O2} core in polymeric structures
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DARII, Mariana; FILIPPOVA, Irina; HAUSER, J; DECURTINS, Silvio; LIU, Shixia; KRAVTSOV, Viktor; BACA, Svetlana. Incorporation of hexanuclear mn(II,III) carboxylate clusters with a {Mn6O2} core in polymeric structures. In: Crystals. 2018, nr. 2(8), p. 0. ISSN 2073-4352.
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Crystals
Numărul 2(8) / 2018 / ISSN 2073-4352

Incorporation of hexanuclear mn(II,III) carboxylate clusters with a {Mn6O2} core in polymeric structures


DOI: 10.3390/cryst8020100
Pag. 0-0

Darii Mariana1, Filippova Irina1, Hauser J2, Decurtins Silvio2, Liu Shixia2, Kravtsov Viktor1, Baca Svetlana1
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 University of Bern
 
Disponibil în IBN: 10 mai 2018


Rezumat

A new series of hexanuclear mixed-valent carboxylate coordination clusters of the type [Mn6O2(O2CR)10L4] (R = CMe3; CHMe2) featuring a {MnII4MnIII24-O)2} core of composition [Mn6O2(O2CCMe3)10(Me3CCO2H)3(EtOH)]·(Me3CCO2H) (1), [Mn6O2(O2CCMe3)10(Me3CCO2H)2 (EtOH)2]·2(EtOH) (2) and [Mn6O2(O2CCMe3)10(Me3CCO2H)2(MeOH)2]·2(MeOH)·H2O (3), and coordination polymers which incorporate such clusters, namely [Mn6O2(O2CCHMe2)10(pyz)(MeOH)2]n (4), {[Mn6O2(O2CCHMe2)10(pyz)1.5(H2O)]·0.5(H2O)}n (5), and [Mn6O2(O2CCMe3)10(HO2CCMe3)2(en)]n (6), have been synthesized (where pyz = pyrazine, en = ethyl nicotinate). The modification of the cluster surface by a diverse combination of capped or bridging ligands attached to peripheral MnII atoms results in discrete clusters with a closed hydrophobic exterior shell in 1 and 2, supramolecular chains built through hydrogen bonded solvent molecule clusters in 3, linear coordination polymers in 4 and 6 or a ladder-like coordination polymer in 5. The H-bonded coordination polymers 4 and 5 form supramolecular layers in crystals.

Cuvinte-cheie
Cluster-based coordination polymer, Manganese cluster,

X-ray diffraction analysis