Chelating Schiff base assisted azide-bridged Mn(ii), Ni(ii) and Cu(ii) magnetic coordination polymers

Shi Qiang Bai; Chen Jie Fang; Zheng He; En Qing Gao; Chun Hua Yan; T. S.Andy Hor

doi:10.1039/c2dt31186k

Chelating Schiff base assisted azide-bridged Mn(ii), Ni(ii) and Cu(ii) magnetic coordination polymers

Shi Qiang Bai^*
, Chen Jie Fang
, Zheng He
, En Qing Gao
, Chun Hua Yan
, T. S.Andy Hor

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

36 Scopus citations

Abstract

Four new Mn(ii), Ni(ii) and Cu(ii) coordination polymers [Mn ₂(L¹)(μ_1,1-N₃) ₂(μ_1,3-N₃)₂]_n (1), [Ni(L²)₂(μ_1,3-N₃)] _n(ClO₄)_n (2), [Cu(L³)(μ _1,1-N₃)(N₃)]_n (3) and [Cu(L ⁴)(μ_1,1-N₃)₂]_n (4) (L¹ = N,N′-bis(2-pyridylmethylene)ethane-1,2-diamine, L ² = N-(2-pyridylmethylene)methylamine, L³ = N-(2-pyridylmethylene)-3-pyridylamine, L⁴ = N-(2-pyridylmethylene)- ^tbutylamine) have been synthesized and characterized by single-crystal X-ray analysis and magnetic measurements. Complex 1 indicates a stoichiometry-dependent structural change (based on Mn:L¹:N ₃ = 2:1:4 molar ratio) and consists of two-dimensional (2-D) (4,4) net layers, in which Mn(ii) centers are co-bridged by single end-to-end (EE), double end-on (EO) azide and chelate-bridging L¹ ligands. Complex 2 shows a single EE azide-bridged one-dimensional (1-D) Ni(ii) chain. Complexes 3 and 4 indicate single EO and double EO azide-bridged 1-D Cu(ii) chains, respectively. Complex 1 exhibits weak ferromagnetism due to its intra-layer spin-canting with T_c = 20 K. Complex 2 shows an unusual intra-chain ferromagnetic coupling and spin-canting behaviour. Both complexes 3 and 4 exhibit intra-chain antiferromagnetic interactions. Magneto-structural parameters for these related complexes were also discussed.

Original language	English
Pages (from-to)	13379-13387
Number of pages	9
Journal	Dalton Transactions
Volume	41
Issue number	43
DOIs	https://doi.org/10.1039/c2dt31186k
State	Published - 21 Nov 2012

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@article{d17235182f4c4c13a8012364b11042c4,

title = "Chelating Schiff base assisted azide-bridged Mn(ii), Ni(ii) and Cu(ii) magnetic coordination polymers",

abstract = "Four new Mn(ii), Ni(ii) and Cu(ii) coordination polymers [Mn 2(L1)(μ1,1-N3) 2(μ1,3-N3)2]n (1), [Ni(L2)2(μ1,3-N3)] n(ClO4)n (2), [Cu(L3)(μ 1,1-N3)(N3)]n (3) and [Cu(L 4)(μ1,1-N3)2]n (4) (L1 = N,N′-bis(2-pyridylmethylene)ethane-1,2-diamine, L 2 = N-(2-pyridylmethylene)methylamine, L3 = N-(2-pyridylmethylene)-3-pyridylamine, L4 = N-(2-pyridylmethylene)- tbutylamine) have been synthesized and characterized by single-crystal X-ray analysis and magnetic measurements. Complex 1 indicates a stoichiometry-dependent structural change (based on Mn:L1:N 3 = 2:1:4 molar ratio) and consists of two-dimensional (2-D) (4,4) net layers, in which Mn(ii) centers are co-bridged by single end-to-end (EE), double end-on (EO) azide and chelate-bridging L1 ligands. Complex 2 shows a single EE azide-bridged one-dimensional (1-D) Ni(ii) chain. Complexes 3 and 4 indicate single EO and double EO azide-bridged 1-D Cu(ii) chains, respectively. Complex 1 exhibits weak ferromagnetism due to its intra-layer spin-canting with Tc = 20 K. Complex 2 shows an unusual intra-chain ferromagnetic coupling and spin-canting behaviour. Both complexes 3 and 4 exhibit intra-chain antiferromagnetic interactions. Magneto-structural parameters for these related complexes were also discussed.",

author = "Bai, \{Shi Qiang\} and Fang, \{Chen Jie\} and Zheng He and Gao, \{En Qing\} and Yan, \{Chun Hua\} and Hor, \{T. S.Andy\}",

year = "2012",

month = nov,

day = "21",

doi = "10.1039/c2dt31186k",

language = "英语",

volume = "41",

pages = "13379--13387",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "43",

}

TY - JOUR

T1 - Chelating Schiff base assisted azide-bridged Mn(ii), Ni(ii) and Cu(ii) magnetic coordination polymers

AU - Bai, Shi Qiang

AU - Fang, Chen Jie

AU - He, Zheng

AU - Gao, En Qing

AU - Yan, Chun Hua

AU - Hor, T. S.Andy

PY - 2012/11/21

Y1 - 2012/11/21

N2 - Four new Mn(ii), Ni(ii) and Cu(ii) coordination polymers [Mn 2(L1)(μ1,1-N3) 2(μ1,3-N3)2]n (1), [Ni(L2)2(μ1,3-N3)] n(ClO4)n (2), [Cu(L3)(μ 1,1-N3)(N3)]n (3) and [Cu(L 4)(μ1,1-N3)2]n (4) (L1 = N,N′-bis(2-pyridylmethylene)ethane-1,2-diamine, L 2 = N-(2-pyridylmethylene)methylamine, L3 = N-(2-pyridylmethylene)-3-pyridylamine, L4 = N-(2-pyridylmethylene)- tbutylamine) have been synthesized and characterized by single-crystal X-ray analysis and magnetic measurements. Complex 1 indicates a stoichiometry-dependent structural change (based on Mn:L1:N 3 = 2:1:4 molar ratio) and consists of two-dimensional (2-D) (4,4) net layers, in which Mn(ii) centers are co-bridged by single end-to-end (EE), double end-on (EO) azide and chelate-bridging L1 ligands. Complex 2 shows a single EE azide-bridged one-dimensional (1-D) Ni(ii) chain. Complexes 3 and 4 indicate single EO and double EO azide-bridged 1-D Cu(ii) chains, respectively. Complex 1 exhibits weak ferromagnetism due to its intra-layer spin-canting with Tc = 20 K. Complex 2 shows an unusual intra-chain ferromagnetic coupling and spin-canting behaviour. Both complexes 3 and 4 exhibit intra-chain antiferromagnetic interactions. Magneto-structural parameters for these related complexes were also discussed.

AB - Four new Mn(ii), Ni(ii) and Cu(ii) coordination polymers [Mn 2(L1)(μ1,1-N3) 2(μ1,3-N3)2]n (1), [Ni(L2)2(μ1,3-N3)] n(ClO4)n (2), [Cu(L3)(μ 1,1-N3)(N3)]n (3) and [Cu(L 4)(μ1,1-N3)2]n (4) (L1 = N,N′-bis(2-pyridylmethylene)ethane-1,2-diamine, L 2 = N-(2-pyridylmethylene)methylamine, L3 = N-(2-pyridylmethylene)-3-pyridylamine, L4 = N-(2-pyridylmethylene)- tbutylamine) have been synthesized and characterized by single-crystal X-ray analysis and magnetic measurements. Complex 1 indicates a stoichiometry-dependent structural change (based on Mn:L1:N 3 = 2:1:4 molar ratio) and consists of two-dimensional (2-D) (4,4) net layers, in which Mn(ii) centers are co-bridged by single end-to-end (EE), double end-on (EO) azide and chelate-bridging L1 ligands. Complex 2 shows a single EE azide-bridged one-dimensional (1-D) Ni(ii) chain. Complexes 3 and 4 indicate single EO and double EO azide-bridged 1-D Cu(ii) chains, respectively. Complex 1 exhibits weak ferromagnetism due to its intra-layer spin-canting with Tc = 20 K. Complex 2 shows an unusual intra-chain ferromagnetic coupling and spin-canting behaviour. Both complexes 3 and 4 exhibit intra-chain antiferromagnetic interactions. Magneto-structural parameters for these related complexes were also discussed.

UR - https://www.scopus.com/pages/publications/84867568123

U2 - 10.1039/c2dt31186k

DO - 10.1039/c2dt31186k

M3 - 文章

C2 - 23007857

AN - SCOPUS:84867568123

SN - 1477-9226

VL - 41

SP - 13379

EP - 13387

JO - Dalton Transactions

JF - Dalton Transactions

IS - 43

ER -

Chelating Schiff base assisted azide-bridged Mn(ii), Ni(ii) and Cu(ii) magnetic coordination polymers

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