Antiferro- to ferromagnetic crossover in diphenoxido bridged NiII2MnII complexes derived from N2O2 donor Schiff base ligands

Piya Seth; Albert Figuerola; Jesús Jover; Eliseo Ruiz; Ashutosh Ghosh

doi:10.1016/j.poly.2016.05.021

Antiferro- to ferromagnetic crossover in diphenoxido bridged Ni^II₂Mn^II complexes derived from N₂O₂ donor Schiff base ligands

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Three new trinuclear Ni^II-Mn^II complexes have been synthesized using three different "metalloligands" [NiL¹], [NiL²] and [NiL³] derived from the Schiff bases H₂L¹ = N,N′-bis(salicylidene)-1,3-pentanediamine, H₂L² = N,N′-bis(salicylidene)-1,3-propanediamine and H₂L³ = N,N′-bis(salicylidene)-1,3,-diaminopropan-2-ol), respectively. In all three complexes, [(NiL¹)₂Mn(OOCPh)₂(H₂O)₂]·CH₃OH (1), [(NiL²)₂Mn(OOCPh)₂(CH₃OH)₂]·CH₃OH (2) and [(NiL³)₂Mn(OOCPh)₂(H₂O)₂]·CH₃OH (3), 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 benzoate, giving rise to a linear structure. Complex 1 with Ni-O-Mn angle of 97.35° exhibits antiferromagnetic interactions (J_Ni-Mn = -0.60 cm^-1) whereas ferromagnetic exchange is observed in 2 and 3 (J_Ni_-_Mn = +2.00 and +1.10 cm^-1 respectively) having Ni-O-Mn angle 97.34° (in 2), 97.27° (in 3). Theoretical calculations have been performed in order to understand the effect of structural parameters that can tune the magnetic properties of this type of complexes such as small differences in the Ni-O-Mn angle and/or slight variations in intermolecular contacts within the crystal.

Original language	English (US)
Pages (from-to)	57-63
Number of pages	7
Journal	Polyhedron
Volume	117
DOIs	https://doi.org/10.1016/j.poly.2016.05.021
State	Published - Oct 15 2016
Externally published	Yes

Keywords

Crossover angle
Heterometallic complexes
Magnetic properties
Manganese
Nickel

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2016.05.021

Cite this

@article{b80f6b0e0f694dcd860466509e9d9481,

title = "Antiferro- to ferromagnetic crossover in diphenoxido bridged NiII2MnII complexes derived from N2O2 donor Schiff base ligands",

abstract = "Three new trinuclear NiII-MnII complexes have been synthesized using three different {"}metalloligands{"} [NiL1], [NiL2] and [NiL3] derived from the Schiff bases H2L1 = N,N′-bis(salicylidene)-1,3-pentanediamine, H2L2 = N,N′-bis(salicylidene)-1,3-propanediamine and H2L3 = N,N′-bis(salicylidene)-1,3,-diaminopropan-2-ol), respectively. In all three complexes, [(NiL1)2Mn(OOCPh)2(H2O)2]·CH3OH (1), [(NiL2)2Mn(OOCPh)2(CH3OH)2]·CH3OH (2) and [(NiL3)2Mn(OOCPh)2(H2O)2]·CH3OH (3), in addition to the double phenoxido bridge, the two terminal NiII atoms are linked to the central MnII by means of a syn-syn bridging benzoate, giving rise to a linear structure. Complex 1 with Ni-O-Mn angle of 97.35° exhibits antiferromagnetic interactions (JNi-Mn = -0.60 cm-1) whereas ferromagnetic exchange is observed in 2 and 3 (JNi-Mn = +2.00 and +1.10 cm-1 respectively) having Ni-O-Mn angle 97.34° (in 2), 97.27° (in 3). Theoretical calculations have been performed in order to understand the effect of structural parameters that can tune the magnetic properties of this type of complexes such as small differences in the Ni-O-Mn angle and/or slight variations in intermolecular contacts within the crystal.",

keywords = "Crossover angle, Heterometallic complexes, Magnetic properties, Manganese, Nickel",

author = "Piya Seth and Albert Figuerola and Jes{\'u}s Jover and Eliseo Ruiz and Ashutosh Ghosh",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

month = oct,

day = "15",

doi = "10.1016/j.poly.2016.05.021",

language = "English (US)",

volume = "117",

pages = "57--63",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier",

}

TY - JOUR

T1 - Antiferro- to ferromagnetic crossover in diphenoxido bridged NiII2MnII complexes derived from N2O2 donor Schiff base ligands

AU - Seth, Piya

AU - Figuerola, Albert

AU - Jover, Jesús

AU - Ruiz, Eliseo

AU - Ghosh, Ashutosh

PY - 2016/10/15

Y1 - 2016/10/15

N2 - Three new trinuclear NiII-MnII complexes have been synthesized using three different "metalloligands" [NiL1], [NiL2] and [NiL3] derived from the Schiff bases H2L1 = N,N′-bis(salicylidene)-1,3-pentanediamine, H2L2 = N,N′-bis(salicylidene)-1,3-propanediamine and H2L3 = N,N′-bis(salicylidene)-1,3,-diaminopropan-2-ol), respectively. In all three complexes, [(NiL1)2Mn(OOCPh)2(H2O)2]·CH3OH (1), [(NiL2)2Mn(OOCPh)2(CH3OH)2]·CH3OH (2) and [(NiL3)2Mn(OOCPh)2(H2O)2]·CH3OH (3), in addition to the double phenoxido bridge, the two terminal NiII atoms are linked to the central MnII by means of a syn-syn bridging benzoate, giving rise to a linear structure. Complex 1 with Ni-O-Mn angle of 97.35° exhibits antiferromagnetic interactions (JNi-Mn = -0.60 cm-1) whereas ferromagnetic exchange is observed in 2 and 3 (JNi-Mn = +2.00 and +1.10 cm-1 respectively) having Ni-O-Mn angle 97.34° (in 2), 97.27° (in 3). Theoretical calculations have been performed in order to understand the effect of structural parameters that can tune the magnetic properties of this type of complexes such as small differences in the Ni-O-Mn angle and/or slight variations in intermolecular contacts within the crystal.

AB - Three new trinuclear NiII-MnII complexes have been synthesized using three different "metalloligands" [NiL1], [NiL2] and [NiL3] derived from the Schiff bases H2L1 = N,N′-bis(salicylidene)-1,3-pentanediamine, H2L2 = N,N′-bis(salicylidene)-1,3-propanediamine and H2L3 = N,N′-bis(salicylidene)-1,3,-diaminopropan-2-ol), respectively. In all three complexes, [(NiL1)2Mn(OOCPh)2(H2O)2]·CH3OH (1), [(NiL2)2Mn(OOCPh)2(CH3OH)2]·CH3OH (2) and [(NiL3)2Mn(OOCPh)2(H2O)2]·CH3OH (3), in addition to the double phenoxido bridge, the two terminal NiII atoms are linked to the central MnII by means of a syn-syn bridging benzoate, giving rise to a linear structure. Complex 1 with Ni-O-Mn angle of 97.35° exhibits antiferromagnetic interactions (JNi-Mn = -0.60 cm-1) whereas ferromagnetic exchange is observed in 2 and 3 (JNi-Mn = +2.00 and +1.10 cm-1 respectively) having Ni-O-Mn angle 97.34° (in 2), 97.27° (in 3). Theoretical calculations have been performed in order to understand the effect of structural parameters that can tune the magnetic properties of this type of complexes such as small differences in the Ni-O-Mn angle and/or slight variations in intermolecular contacts within the crystal.

KW - Crossover angle

KW - Heterometallic complexes

KW - Magnetic properties

KW - Manganese

KW - Nickel

UR - http://www.scopus.com/inward/record.url?scp=84973902527&partnerID=8YFLogxK

U2 - 10.1016/j.poly.2016.05.021

DO - 10.1016/j.poly.2016.05.021

M3 - Article

AN - SCOPUS:84973902527

SN - 0277-5387

VL - 117

SP - 57

EP - 63

JO - Polyhedron

JF - Polyhedron

ER -