Synthesis, structure, and magnetic properties of discrete d-f heterodinuclear complexes designed from tetrahedrally distorted [Cu(salabza)] (H2salabza = N,N′-bis(salicyIidene)-2-aminobenzylamine) and [Ln(hfac)3] (Hhfac = 1,1,1,5,5,5-hexafluoroacetylacetone, Ln = Gd or Lu)

Miwa Sasaki, Kazuhiro Manseki, Hiroaki Horiuchi, Motoko Kumagai, Masatomi Sakamoto, Hiroshi Sakiyama, Yuzo Nishida, Masahiro Sakai, Yoshihiko Sadaoka, Masaaki Ohba, Hisashi Okawa

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Abstract

A tetrahedrally distorted mononuclear copper(n) complex, [Cu(salabza)] 1, and two dinuclear CuLn complexes, [Cu(salabza)Ln(hfac)3] (Ln = Gd 2 or Lu 3), were synthesized and their molecular structures determined, where H2salabza and Hhfac denote N,N′-bis(salicylidene)-2-aminobenzylamine and 1,1,1,5,5,5-hexafluoroacetylacetone, respectively. In complex 1 the deviations of the four co-ordinating atoms (O(1), O(2), N(1)and N(2)) of salabza2- and the copper atom from the least-squares equatorial plane O(1)O(2)N(1)N(2) indicate the tetrahedral distortion around Cu. In 2 and 3 the CuII and LnIII are bridged by the two phenolic oxygens of salabza2-. The Cu ⋯ Ln distances are 3.2481(8) Å for 2 and 3.1825(7) Å for 3. The structures of 2 and 3 were found to consist of a perfectly discrete dinuclear CuLn unit, the shortest intermolecular Cu⋯Cu, Cu⋯Ln and Ln⋯Ln distances being 6.002(1), 7.522(1) and 8.507(1) Å for 2, and 5.998(1), 7.509(1) and 8.584(1) Å for 3, respectively. Cryomagnetic susceptibility measurements of 2 in the region of 2 K to room temperature indicated the operation of a ferromagnetic interaction between CuII and GdIII, with J= +0.8 cm-1 based on H= -2JSCu·SGd. This was confirmed by measurements of the field dependence of magnetization at 2 K.

Original languageEnglish
Pages (from-to)259-263
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number3
DOIs
Publication statusPublished - Jan 1 2000

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Copper
Magnetic properties
Atoms
Molecular structure
Magnetization
Oxygen
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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Synthesis, structure, and magnetic properties of discrete d-f heterodinuclear complexes designed from tetrahedrally distorted [Cu(salabza)] (H2salabza = N,N′-bis(salicyIidene)-2-aminobenzylamine) and [Ln(hfac)3] (Hhfac = 1,1,1,5,5,5-hexafluoroacetylacetone, Ln = Gd or Lu). / Sasaki, Miwa; Manseki, Kazuhiro; Horiuchi, Hiroaki; Kumagai, Motoko; Sakamoto, Masatomi; Sakiyama, Hiroshi; Nishida, Yuzo; Sakai, Masahiro; Sadaoka, Yoshihiko; Ohba, Masaaki; Okawa, Hisashi.

In: Journal of the Chemical Society, Dalton Transactions, No. 3, 01.01.2000, p. 259-263.

Research output: Contribution to journalArticle

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title = "Synthesis, structure, and magnetic properties of discrete d-f heterodinuclear complexes designed from tetrahedrally distorted [Cu(salabza)] (H2salabza = N,N′-bis(salicyIidene)-2-aminobenzylamine) and [Ln(hfac)3] (Hhfac = 1,1,1,5,5,5-hexafluoroacetylacetone, Ln = Gd or Lu)",
abstract = "A tetrahedrally distorted mononuclear copper(n) complex, [Cu(salabza)] 1, and two dinuclear CuLn complexes, [Cu(salabza)Ln(hfac)3] (Ln = Gd 2 or Lu 3), were synthesized and their molecular structures determined, where H2salabza and Hhfac denote N,N′-bis(salicylidene)-2-aminobenzylamine and 1,1,1,5,5,5-hexafluoroacetylacetone, respectively. In complex 1 the deviations of the four co-ordinating atoms (O(1), O(2), N(1)and N(2)) of salabza2- and the copper atom from the least-squares equatorial plane O(1)O(2)N(1)N(2) indicate the tetrahedral distortion around Cu. In 2 and 3 the CuII and LnIII are bridged by the two phenolic oxygens of salabza2-. The Cu ⋯ Ln distances are 3.2481(8) {\AA} for 2 and 3.1825(7) {\AA} for 3. The structures of 2 and 3 were found to consist of a perfectly discrete dinuclear CuLn unit, the shortest intermolecular Cu⋯Cu, Cu⋯Ln and Ln⋯Ln distances being 6.002(1), 7.522(1) and 8.507(1) {\AA} for 2, and 5.998(1), 7.509(1) and 8.584(1) {\AA} for 3, respectively. Cryomagnetic susceptibility measurements of 2 in the region of 2 K to room temperature indicated the operation of a ferromagnetic interaction between CuII and GdIII, with J= +0.8 cm-1 based on H= -2JSCu·SGd. This was confirmed by measurements of the field dependence of magnetization at 2 K.",
author = "Miwa Sasaki and Kazuhiro Manseki and Hiroaki Horiuchi and Motoko Kumagai and Masatomi Sakamoto and Hiroshi Sakiyama and Yuzo Nishida and Masahiro Sakai and Yoshihiko Sadaoka and Masaaki Ohba and Hisashi Okawa",
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T1 - Synthesis, structure, and magnetic properties of discrete d-f heterodinuclear complexes designed from tetrahedrally distorted [Cu(salabza)] (H2salabza = N,N′-bis(salicyIidene)-2-aminobenzylamine) and [Ln(hfac)3] (Hhfac = 1,1,1,5,5,5-hexafluoroacetylacetone, Ln = Gd or Lu)

AU - Sasaki, Miwa

AU - Manseki, Kazuhiro

AU - Horiuchi, Hiroaki

AU - Kumagai, Motoko

AU - Sakamoto, Masatomi

AU - Sakiyama, Hiroshi

AU - Nishida, Yuzo

AU - Sakai, Masahiro

AU - Sadaoka, Yoshihiko

AU - Ohba, Masaaki

AU - Okawa, Hisashi

PY - 2000/1/1

Y1 - 2000/1/1

N2 - A tetrahedrally distorted mononuclear copper(n) complex, [Cu(salabza)] 1, and two dinuclear CuLn complexes, [Cu(salabza)Ln(hfac)3] (Ln = Gd 2 or Lu 3), were synthesized and their molecular structures determined, where H2salabza and Hhfac denote N,N′-bis(salicylidene)-2-aminobenzylamine and 1,1,1,5,5,5-hexafluoroacetylacetone, respectively. In complex 1 the deviations of the four co-ordinating atoms (O(1), O(2), N(1)and N(2)) of salabza2- and the copper atom from the least-squares equatorial plane O(1)O(2)N(1)N(2) indicate the tetrahedral distortion around Cu. In 2 and 3 the CuII and LnIII are bridged by the two phenolic oxygens of salabza2-. The Cu ⋯ Ln distances are 3.2481(8) Å for 2 and 3.1825(7) Å for 3. The structures of 2 and 3 were found to consist of a perfectly discrete dinuclear CuLn unit, the shortest intermolecular Cu⋯Cu, Cu⋯Ln and Ln⋯Ln distances being 6.002(1), 7.522(1) and 8.507(1) Å for 2, and 5.998(1), 7.509(1) and 8.584(1) Å for 3, respectively. Cryomagnetic susceptibility measurements of 2 in the region of 2 K to room temperature indicated the operation of a ferromagnetic interaction between CuII and GdIII, with J= +0.8 cm-1 based on H= -2JSCu·SGd. This was confirmed by measurements of the field dependence of magnetization at 2 K.

AB - A tetrahedrally distorted mononuclear copper(n) complex, [Cu(salabza)] 1, and two dinuclear CuLn complexes, [Cu(salabza)Ln(hfac)3] (Ln = Gd 2 or Lu 3), were synthesized and their molecular structures determined, where H2salabza and Hhfac denote N,N′-bis(salicylidene)-2-aminobenzylamine and 1,1,1,5,5,5-hexafluoroacetylacetone, respectively. In complex 1 the deviations of the four co-ordinating atoms (O(1), O(2), N(1)and N(2)) of salabza2- and the copper atom from the least-squares equatorial plane O(1)O(2)N(1)N(2) indicate the tetrahedral distortion around Cu. In 2 and 3 the CuII and LnIII are bridged by the two phenolic oxygens of salabza2-. The Cu ⋯ Ln distances are 3.2481(8) Å for 2 and 3.1825(7) Å for 3. The structures of 2 and 3 were found to consist of a perfectly discrete dinuclear CuLn unit, the shortest intermolecular Cu⋯Cu, Cu⋯Ln and Ln⋯Ln distances being 6.002(1), 7.522(1) and 8.507(1) Å for 2, and 5.998(1), 7.509(1) and 8.584(1) Å for 3, respectively. Cryomagnetic susceptibility measurements of 2 in the region of 2 K to room temperature indicated the operation of a ferromagnetic interaction between CuII and GdIII, with J= +0.8 cm-1 based on H= -2JSCu·SGd. This was confirmed by measurements of the field dependence of magnetization at 2 K.

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