Ferro- to antiferromagnetic crossover angle in diphenoxido- and carboxylato-bridged trinuclear Ni II 2 -Mn II complexes: Experimental observations and theoretical rationalization

Piya Seth, Albert Figuerola*, Jesús Jover, Eliseo Ruiz, Ashutosh Ghosh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Three new trinuclear heterometallic Ni II -Mn II complexes have been synthesized using a [NiL] metalloligand, where H 2 L = N,N′-bis(salicylidene)-1,3-propanediamine. The complexes [(NiL) 2 Mn(OCnn) 2 (CH 3 OH) 2 ] ·CH 3 OH (1), [(NiL) 2 Mn(OPh) 2 (CH 3 OH) 2 ][(NiL) 2 Mn(OPh) 2 ]·H 2 O (2), and [(NiL) 2 Mn(OSal) 2 (CH 3 OH) 2 ]·2[NiL] (3) (where OCnn = cinnamate, OPh = phenylacetate, OSal = salicylate) have been structurally characterized. In all three complexes, in addition to the double phenoxido bridge, the two terminal Ni II atoms are linked to the central Mn II by means of a syn-syn bridging carboxylate, giving rise to a linear structure. Complexes 1 and 2 with Ni-O-Mn angles of 97.24 and 96.43°, respectively, exhibit ferromagnetic interactions (J Ni-Mn = +1.38 and +0.50 cm -1 , respectively), whereas 3 is antiferromagnetic (J Ni-Mn = -0.24 cm -1 ), having an Ni-O-Mn angle of 98.51°. DFT calculations indicate that there is a clear magneto-structural correlation between the Ni-O-Mn angle and J Ni-Mn values, which is in agreement with the experimental results.

Original languageEnglish (US)
Pages (from-to)9296-9305
Number of pages10
JournalInorganic Chemistry
Volume53
Issue number17
DOIs
StatePublished - Sep 2 2014

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Fingerprint Dive into the research topics of 'Ferro- to antiferromagnetic crossover angle in diphenoxido- and carboxylato-bridged trinuclear Ni <sup>II</sup> <sub>2</sub> -Mn <sup>II</sup> complexes: Experimental observations and theoretical rationalization'. Together they form a unique fingerprint.

Cite this