A synthetic strategy for switching the single ion anisotropy in tetrahedral Co(II) complexes

Shefali Vaidya; Apoorva Upadhyay; Saurabh Kumar Singh; Tulika Gupta; Subrata Tewary; Stuart K. Langley; James P.S. Walsh; Keith S. Murray; Gopalan Rajaraman; Maheswaran Shanmugam

doi:10.1039/c4cc08305a

A synthetic strategy for switching the single ion anisotropy in tetrahedral Co(II) complexes

Shefali Vaidya, Apoorva Upadhyay, Saurabh Kumar Singh, Tulika Gupta, Subrata Tewary, Stuart K. Langley, James P.S. Walsh, Keith S. Murray, Gopalan Rajaraman, Maheswaran Shanmugam

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Abstract

Four novel mononuclear tetrahedral cobalt(ii) complexes containing exocyclic mesoionic ligands of molecular formulae [Co^II(L₁)(X)₂(MeCN)] X = Cl (1) or Br (2) and [Co^II(L₂)(X)₂(MeCN)], X = Cl (3) or Br (4) have been reported. It is found that simple substitution of L₁ (O donor in 1 and 2) by L₂ (S donor in 3 and 4) results in switching of the single ion magnetic anisotropy parameter (D) from positive to negative, with a significant change in magnitude.

Original language	English (US)
Pages (from-to)	3739-3742
Number of pages	4
Journal	Chemical Communications
Volume	51
Issue number	18
DOIs	https://doi.org/10.1039/c4cc08305a
State	Published - Mar 4 2015
Externally published	Yes

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© The Royal Society of Chemistry 2015.

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abstract = "Four novel mononuclear tetrahedral cobalt(ii) complexes containing exocyclic mesoionic ligands of molecular formulae [CoII(L1)(X)2(MeCN)] X = Cl (1) or Br (2) and [CoII(L2)(X)2(MeCN)], X = Cl (3) or Br (4) have been reported. It is found that simple substitution of L1 (O donor in 1 and 2) by L2 (S donor in 3 and 4) results in switching of the single ion magnetic anisotropy parameter (D) from positive to negative, with a significant change in magnitude.",

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AU - Vaidya, Shefali

AU - Upadhyay, Apoorva

AU - Singh, Saurabh Kumar

AU - Gupta, Tulika

AU - Tewary, Subrata

AU - Langley, Stuart K.

AU - Walsh, James P.S.

AU - Murray, Keith S.

AU - Rajaraman, Gopalan

AU - Shanmugam, Maheswaran

PY - 2015/3/4

Y1 - 2015/3/4

N2 - Four novel mononuclear tetrahedral cobalt(ii) complexes containing exocyclic mesoionic ligands of molecular formulae [CoII(L1)(X)2(MeCN)] X = Cl (1) or Br (2) and [CoII(L2)(X)2(MeCN)], X = Cl (3) or Br (4) have been reported. It is found that simple substitution of L1 (O donor in 1 and 2) by L2 (S donor in 3 and 4) results in switching of the single ion magnetic anisotropy parameter (D) from positive to negative, with a significant change in magnitude.

AB - Four novel mononuclear tetrahedral cobalt(ii) complexes containing exocyclic mesoionic ligands of molecular formulae [CoII(L1)(X)2(MeCN)] X = Cl (1) or Br (2) and [CoII(L2)(X)2(MeCN)], X = Cl (3) or Br (4) have been reported. It is found that simple substitution of L1 (O donor in 1 and 2) by L2 (S donor in 3 and 4) results in switching of the single ion magnetic anisotropy parameter (D) from positive to negative, with a significant change in magnitude.

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A synthetic strategy for switching the single ion anisotropy in tetrahedral Co(II) complexes

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