Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

Luming Yang; Julius J. Oppenheim; Mircea Dincă

doi:10.1039/d2dt01337a

Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

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Abstract

Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (Tp^PhNi)Cl (Tp^Ph = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(Tp^PhNi)₃(HITP)] (HITP³⁻˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP³⁻˙ and two of the three Ni²⁺ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.

Original language	English (US)
Pages (from-to)	8583-8587
Number of pages	5
Journal	Dalton Transactions
Volume	51
Issue number	22
DOIs	https://doi.org/10.1039/d2dt01337a
State	Published - May 18 2022
Externally published	Yes

All Science Journal Classification (ASJC) codes

Inorganic Chemistry

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10.1039/d2dt01337a

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title = "Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex",

abstract = "Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (TpPhNi)Cl (TpPh = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(TpPhNi)3(HITP)] (HITP3−˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP3−˙ and two of the three Ni2+ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.",

author = "Luming Yang and Oppenheim, \{Julius J.\} and Mircea Dinc{\u a}",

note = "Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

year = "2022",

month = may,

day = "18",

doi = "10.1039/d2dt01337a",

language = "English (US)",

volume = "51",

pages = "8583--8587",

journal = "Dalton Transactions",

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TY - JOUR

T1 - Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

AU - Yang, Luming

AU - Oppenheim, Julius J.

AU - Dincă, Mircea

PY - 2022/5/18

Y1 - 2022/5/18

N2 - Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (TpPhNi)Cl (TpPh = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(TpPhNi)3(HITP)] (HITP3−˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP3−˙ and two of the three Ni2+ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.

AB - Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (TpPhNi)Cl (TpPh = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(TpPhNi)3(HITP)] (HITP3−˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP3−˙ and two of the three Ni2+ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.

UR - https://www.scopus.com/pages/publications/85131300390

UR - https://www.scopus.com/pages/publications/85131300390#tab=citedBy

U2 - 10.1039/d2dt01337a

DO - 10.1039/d2dt01337a

M3 - Article

C2 - 35612004

AN - SCOPUS:85131300390

SN - 1477-9226

VL - 51

SP - 8583

EP - 8587

JO - Dalton Transactions

JF - Dalton Transactions

IS - 22

ER -

Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

Abstract

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