Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes: What is the mechanism for spin-coupling?

Min Zhao; Chang Zhong; Charlotte Stern; Anthony G.M. Barrett; Brian M Hoffman

doi:10.1021/ja0438112

Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes: What is the mechanism for spin-coupling?

Min Zhao, Chang Zhong, Charlotte Stern, Anthony G.M. Barrett^*, Brian M Hoffman

^*Corresponding author for this work

Chemistry

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

56 Scopus citations

Abstract

Dimetallic Schiff base-porphyrazine (pz) compounds, denoted 1[M ¹; M²; R], have been prepared, where metal ion M ¹ is incorporated into the pz core, and metal ion M² is bound to a bis(5-tert-butylsalicylidenimine) chelate built onto two amino nitrogens attached to the pz periphery; R is a solubilizing group (either propyl (Pr) or 3,4,5-trimethoxyphenyl (TMP)) attached to the remaining carbons of the pz periphery. The synthesis of 1[Cu; Cu; R], 1[Cu; VO; R], 1[CIMn; Cu; Pr], and 1[CIMn; VO; Pr] is discussed, the crystal structures of 1[Cu; Cu; TMP] and 1[CIMn; VO; Pr] are presented, and the magnetic properties of these compounds are compared. The pattern of ligand-mediated exchange coupling in these complexes is startling: for the Cu-M² complexes 1[Cu; VO; R] and 1[Cu; Cu; R], 2 × 10² ≤

Original language	English (US)
Pages (from-to)	9769-9775
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	127
Issue number	27
DOIs	https://doi.org/10.1021/ja0438112
State	Published - Jul 13 2005

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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@article{1ea7502905064c17a5ed4af8a86059ee,

title = "Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes: What is the mechanism for spin-coupling?",

abstract = "Dimetallic Schiff base-porphyrazine (pz) compounds, denoted 1[M 1; M2; R], have been prepared, where metal ion M 1 is incorporated into the pz core, and metal ion M2 is bound to a bis(5-tert-butylsalicylidenimine) chelate built onto two amino nitrogens attached to the pz periphery; R is a solubilizing group (either propyl (Pr) or 3,4,5-trimethoxyphenyl (TMP)) attached to the remaining carbons of the pz periphery. The synthesis of 1[Cu; Cu; R], 1[Cu; VO; R], 1[CIMn; Cu; Pr], and 1[CIMn; VO; Pr] is discussed, the crystal structures of 1[Cu; Cu; TMP] and 1[CIMn; VO; Pr] are presented, and the magnetic properties of these compounds are compared. The pattern of ligand-mediated exchange coupling in these complexes is startling: for the Cu-M2 complexes 1[Cu; VO; R] and 1[Cu; Cu; R], 2 × 102 ≤",

author = "Min Zhao and Chang Zhong and Charlotte Stern and Barrett, {Anthony G.M.} and Hoffman, {Brian M}",

year = "2005",

month = jul,

day = "13",

doi = "10.1021/ja0438112",

language = "English (US)",

volume = "127",

pages = "9769--9775",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

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}

Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes : What is the mechanism for spin-coupling? / Zhao, Min; Zhong, Chang; Stern, Charlotte; Barrett, Anthony G.M.; Hoffman, Brian M.

In: Journal of the American Chemical Society, Vol. 127, No. 27, 13.07.2005, p. 9769-9775.

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

TY - JOUR

T1 - Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes

T2 - What is the mechanism for spin-coupling?

AU - Zhao, Min

AU - Zhong, Chang

AU - Stern, Charlotte

AU - Barrett, Anthony G.M.

AU - Hoffman, Brian M

PY - 2005/7/13

Y1 - 2005/7/13

N2 - Dimetallic Schiff base-porphyrazine (pz) compounds, denoted 1[M 1; M2; R], have been prepared, where metal ion M 1 is incorporated into the pz core, and metal ion M2 is bound to a bis(5-tert-butylsalicylidenimine) chelate built onto two amino nitrogens attached to the pz periphery; R is a solubilizing group (either propyl (Pr) or 3,4,5-trimethoxyphenyl (TMP)) attached to the remaining carbons of the pz periphery. The synthesis of 1[Cu; Cu; R], 1[Cu; VO; R], 1[CIMn; Cu; Pr], and 1[CIMn; VO; Pr] is discussed, the crystal structures of 1[Cu; Cu; TMP] and 1[CIMn; VO; Pr] are presented, and the magnetic properties of these compounds are compared. The pattern of ligand-mediated exchange coupling in these complexes is startling: for the Cu-M2 complexes 1[Cu; VO; R] and 1[Cu; Cu; R], 2 × 102 ≤

AB - Dimetallic Schiff base-porphyrazine (pz) compounds, denoted 1[M 1; M2; R], have been prepared, where metal ion M 1 is incorporated into the pz core, and metal ion M2 is bound to a bis(5-tert-butylsalicylidenimine) chelate built onto two amino nitrogens attached to the pz periphery; R is a solubilizing group (either propyl (Pr) or 3,4,5-trimethoxyphenyl (TMP)) attached to the remaining carbons of the pz periphery. The synthesis of 1[Cu; Cu; R], 1[Cu; VO; R], 1[CIMn; Cu; Pr], and 1[CIMn; VO; Pr] is discussed, the crystal structures of 1[Cu; Cu; TMP] and 1[CIMn; VO; Pr] are presented, and the magnetic properties of these compounds are compared. The pattern of ligand-mediated exchange coupling in these complexes is startling: for the Cu-M2 complexes 1[Cu; VO; R] and 1[Cu; Cu; R], 2 × 102 ≤

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