Syntheses, structure, and magnetic properties of heteronuclear Cu(ii) 4Fe(iii)4 cluster and Cu(ii)8 bimetallacycles

Kong Qiu Hu; Shu Qi Wu; Guang Yu An; Ai Li Cui; Hui Zhong Kou

doi:10.1039/c2dt31708g

Syntheses, structure, and magnetic properties of heteronuclear Cu(ii) ₄Fe(iii)₄ cluster and Cu(ii)₈ bimetallacycles

Kong Qiu Hu, Shu Qi Wu, Guang Yu An, Ai Li Cui, Hui Zhong Kou

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

8 Citations (Scopus)

Abstract

The compartmental Schiff base ligands N,N′-ethylenebis(3- hydroxysalicylidene) (H₄L) and N,N′-propylenebis(3- hydroxysalicylidene) (H₄L′) have been employed in the synthesis of a cyclic tetranuclear Cu(ii) complex [Cu₄(L′) ₂(MeOH)₃(H₂O)]·[Cu₄(L′) ₂(MeOH)₃] (1), a novel octanuclear Cu(ii) complex [Cu ₈(L-L)₂(H₂O)₄(μ₂- H₂O)]·3DMF·3H₂O (2) and a hetero-octanuclear Cu(ii)-Fe(iii) complex [Cu₄Fe₄(L)₄(H ₂O)₃(μ₃-O)₂] ·3DMF·3H₂O (3). During the formation of the Cu ₈ complex (2), a new bis-Schiff base ligand (L-L)^8- forms via the ortho-para C-C coupling of two H₄L ligands. The bicyclic complex (2) is comprised of two cyclic Cu₄ units that are similar to that of complex 1. In the Cu₄ unit, the alternate Cu(ii) ions are singly bridged by phenoxo groups. The three complexes display overall antiferromagnetic coupling, and the Cu(ii)-Cu(ii) magnetic coupling constant falls in the range -117.2 to -473.6 cm^-1 for complexes 1 and 2 corresponding to the bridging Cu-O_phenoxide-Cu bond angles of 124.3-131.0°.

Original language	English
Pages (from-to)	1102-1108
Number of pages	7
Journal	Dalton Transactions
Volume	42
Issue number	4
DOIs	https://doi.org/10.1039/c2dt31708g
Publication status	Published - Jan 28 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Inorganic Chemistry

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10.1039/c2dt31708g

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@article{5140e54fce2d4748bfa079a459d58083,

title = "Syntheses, structure, and magnetic properties of heteronuclear Cu(ii) 4Fe(iii)4 cluster and Cu(ii)8 bimetallacycles",

abstract = "The compartmental Schiff base ligands N,N′-ethylenebis(3- hydroxysalicylidene) (H4L) and N,N′-propylenebis(3- hydroxysalicylidene) (H4L′) have been employed in the synthesis of a cyclic tetranuclear Cu(ii) complex [Cu4(L′) 2(MeOH)3(H2O)]·[Cu4(L′) 2(MeOH)3] (1), a novel octanuclear Cu(ii) complex [Cu 8(L-L)2(H2O)4(μ2- H2O)]·3DMF·3H2O (2) and a hetero-octanuclear Cu(ii)-Fe(iii) complex [Cu4Fe4(L)4(H 2O)3(μ3-O)2] ·3DMF·3H2O (3). During the formation of the Cu 8 complex (2), a new bis-Schiff base ligand (L-L)8- forms via the ortho-para C-C coupling of two H4L ligands. The bicyclic complex (2) is comprised of two cyclic Cu4 units that are similar to that of complex 1. In the Cu4 unit, the alternate Cu(ii) ions are singly bridged by phenoxo groups. The three complexes display overall antiferromagnetic coupling, and the Cu(ii)-Cu(ii) magnetic coupling constant falls in the range -117.2 to -473.6 cm-1 for complexes 1 and 2 corresponding to the bridging Cu-Ophenoxide-Cu bond angles of 124.3-131.0°.",

author = "Hu, {Kong Qiu} and Wu, {Shu Qi} and An, {Guang Yu} and Cui, {Ai Li} and Kou, {Hui Zhong}",

year = "2013",

month = jan,

day = "28",

doi = "10.1039/c2dt31708g",

language = "English",

volume = "42",

pages = "1102--1108",

journal = "Dalton Transactions",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Syntheses, structure, and magnetic properties of heteronuclear Cu(ii) 4Fe(iii)4 cluster and Cu(ii)8 bimetallacycles

AU - Hu, Kong Qiu

AU - Wu, Shu Qi

AU - An, Guang Yu

AU - Cui, Ai Li

AU - Kou, Hui Zhong

PY - 2013/1/28

Y1 - 2013/1/28

N2 - The compartmental Schiff base ligands N,N′-ethylenebis(3- hydroxysalicylidene) (H4L) and N,N′-propylenebis(3- hydroxysalicylidene) (H4L′) have been employed in the synthesis of a cyclic tetranuclear Cu(ii) complex [Cu4(L′) 2(MeOH)3(H2O)]·[Cu4(L′) 2(MeOH)3] (1), a novel octanuclear Cu(ii) complex [Cu 8(L-L)2(H2O)4(μ2- H2O)]·3DMF·3H2O (2) and a hetero-octanuclear Cu(ii)-Fe(iii) complex [Cu4Fe4(L)4(H 2O)3(μ3-O)2] ·3DMF·3H2O (3). During the formation of the Cu 8 complex (2), a new bis-Schiff base ligand (L-L)8- forms via the ortho-para C-C coupling of two H4L ligands. The bicyclic complex (2) is comprised of two cyclic Cu4 units that are similar to that of complex 1. In the Cu4 unit, the alternate Cu(ii) ions are singly bridged by phenoxo groups. The three complexes display overall antiferromagnetic coupling, and the Cu(ii)-Cu(ii) magnetic coupling constant falls in the range -117.2 to -473.6 cm-1 for complexes 1 and 2 corresponding to the bridging Cu-Ophenoxide-Cu bond angles of 124.3-131.0°.

AB - The compartmental Schiff base ligands N,N′-ethylenebis(3- hydroxysalicylidene) (H4L) and N,N′-propylenebis(3- hydroxysalicylidene) (H4L′) have been employed in the synthesis of a cyclic tetranuclear Cu(ii) complex [Cu4(L′) 2(MeOH)3(H2O)]·[Cu4(L′) 2(MeOH)3] (1), a novel octanuclear Cu(ii) complex [Cu 8(L-L)2(H2O)4(μ2- H2O)]·3DMF·3H2O (2) and a hetero-octanuclear Cu(ii)-Fe(iii) complex [Cu4Fe4(L)4(H 2O)3(μ3-O)2] ·3DMF·3H2O (3). During the formation of the Cu 8 complex (2), a new bis-Schiff base ligand (L-L)8- forms via the ortho-para C-C coupling of two H4L ligands. The bicyclic complex (2) is comprised of two cyclic Cu4 units that are similar to that of complex 1. In the Cu4 unit, the alternate Cu(ii) ions are singly bridged by phenoxo groups. The three complexes display overall antiferromagnetic coupling, and the Cu(ii)-Cu(ii) magnetic coupling constant falls in the range -117.2 to -473.6 cm-1 for complexes 1 and 2 corresponding to the bridging Cu-Ophenoxide-Cu bond angles of 124.3-131.0°.

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U2 - 10.1039/c2dt31708g

DO - 10.1039/c2dt31708g

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C2 - 23131788

AN - SCOPUS:84871962975

SN - 1477-9226

VL - 42

SP - 1102

EP - 1108

JO - Dalton Transactions

JF - Dalton Transactions

IS - 4

ER -

Syntheses, structure, and magnetic properties of heteronuclear Cu(ii) ₄Fe(iii)₄ cluster and Cu(ii)₈ bimetallacycles

Abstract

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