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Pregled bibliografske jedinice broj: 1002338

Ladder-like [CrCu] coordination polymers containing unique bridging modes of [Cr(C2O4)3]3− and Cr2O72−


Kanižaj, Lidija; Molčanov, Krešimir; Torić, Filip; Pajić, Damir; Lončarić, Ivor; Šantić, Ana; Jurić, Marijana
Ladder-like [CrCu] coordination polymers containing unique bridging modes of [Cr(C2O4)3]3− and Cr2O72− // Dalton transactions, 48 (2019), 7891-7898 doi:10.1039/C9DT01195A (međunarodna recenzija, članak, znanstveni)


Naslov
Ladder-like [CrCu] coordination polymers containing unique bridging modes of [Cr(C2O4)3]3− and Cr2O72−

Autori
Kanižaj, Lidija ; Molčanov, Krešimir ; Torić, Filip ; Pajić, Damir ; Lončarić, Ivor ; Šantić, Ana ; Jurić, Marijana

Izvornik
Dalton transactions (1477-9226) 48 (2019); 7891-7898

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Coordination polymers ; bridging oxalate ; bridging dichromate ; ladder-like topology ; antiferromagnetic interaction

Sažetak
Three heterometallic one-dimensional (1D) coordination polymers {; ; A[CrCu2(bpy)2(C2O4)4]·H2O}; ; n [A = K+ (1) and NH4+ (2) ; bpy = 2, 2’-bipyridine] and [(Cr2O7)Cu2(C2O4)(phen)2]n (3 ; phen = 1, 10-phenanthroline) with uncommon topology have been synthesized using a building block approach and characterized by single-crystal X-ray diffraction, IR and impedance spectroscopies, magnetization measurements, and DFT calculations. Due to the partial decomposition of the building block [Cr(C2O4)3]3−, all three compounds contain oxalate-bridged [Cu2(L)2(μ-C2O4)]2+ units [L = bpy (1 and 2) and phen (3)]. In compounds 1 and 2 these cations are mutually connected through oxalate groups from [Cr(C2O4)3]3−, thus forming ladderlike topologies. Unusually, three different bridging modes of the oxalate ligand are observed in these chains. In compound 3 copper(II) ions from cationic units are bridged through the oxygen atoms of Cr2O72− anions in a novel ladder-like mode. Very strong antiferromagnetic coupling observed in all three compounds, determined from the magnetization measurements and confirmed by DFT calculations (J = −343, −371 and −340 cm−1 for 1, 2 and 3, respectively), appears between two copper(II) ions interacting through the oxalate bridge.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-4079 - Novi metal-organsi sustavi s oksalatnim i kinoidnim ligandima s podešenim svojstvima pogodnim za primjenu (Krešimir Molčanov, )
HRZZ-UIP-2014-09-8276 - Multiferični i magnetoelektrični sustavi (Damir Pajić, )

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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