Topological ferrimagnetic behaviours of coordination polymers containing manganese(ii) chains with mixed azide and carboxylate bridges and alternating F/AF/AF′/AF′/AF interactions

Yan Qin Wang; Hou Ting Liu; Yan Qi; En Qing Gao

doi:10.1039/c4dt01151a

Topological ferrimagnetic behaviours of coordination polymers containing manganese(ii) chains with mixed azide and carboxylate bridges and alternating F/AF/AF′/AF′/AF interactions

Yan Qin Wang
, Hou Ting Liu
, Yan Qi
, En Qing Gao^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

20 Scopus citations

Abstract

Two Mn(ii) complexes with azide and a new zwitterionic tetracarboxylate ligand 1,2,4,5-tetrakis(4-carboxylatopyridinium-1-methylene)benzene (L ¹), {[Mn₅(L¹)₂(N₃) ₈(OH)₂]·12H₂O}_n (1) and {[Mn₅(L¹)₂(N₃)₈(H ₂O)₂](ClO₄)₂·6H ₂O}_n (2), have been synthesized and characterized crystallographically and magnetically. 1 and 2 contain similar alternating chains constructed by azide and carboxylate bridges. The independent sets of bridges alternate in an ABCCB sequence between adjacent Mn(ii) ions: (EO-N ₃)₂ double bridges (EO = end-on) (denoted as A), [(EO-N₃)(OCO)₂] triple bridges (denoted as B) and [(EO-N₃)(OCO)] double bridges (denoted as C). The alternating chains are interlinked into 2D coordination networks by the tetrapyridinium spacers. Magnetic studies demonstrate that the magnetic coupling through the double EO azide bridges is ferromagnetic and that through mixed azide/carboxylate bridges is antiferromagnetic. The unprecedented F/AF/AF′/AF′/AF coupling sequence along the chain dictates an uncompensated ground spin state (S = 5/2 per Mn₅ unit) and leads to one-dimensional topological ferrimagnetism, which features a minimum in the χT versus T plot. This journal is

Original language	English
Pages (from-to)	11819-11825
Number of pages	7
Journal	Dalton Transactions
Volume	43
Issue number	31
DOIs	https://doi.org/10.1039/c4dt01151a
State	Published - 21 Aug 2014

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title = "Topological ferrimagnetic behaviours of coordination polymers containing manganese(ii) chains with mixed azide and carboxylate bridges and alternating F/AF/AF′/AF′/AF interactions",

abstract = "Two Mn(ii) complexes with azide and a new zwitterionic tetracarboxylate ligand 1,2,4,5-tetrakis(4-carboxylatopyridinium-1-methylene)benzene (L 1), \{[Mn5(L1)2(N3) 8(OH)2]·12H2O\}n (1) and \{[Mn5(L1)2(N3)8(H 2O)2](ClO4)2·6H 2O\}n (2), have been synthesized and characterized crystallographically and magnetically. 1 and 2 contain similar alternating chains constructed by azide and carboxylate bridges. The independent sets of bridges alternate in an ABCCB sequence between adjacent Mn(ii) ions: (EO-N 3)2 double bridges (EO = end-on) (denoted as A), [(EO-N3)(OCO)2] triple bridges (denoted as B) and [(EO-N3)(OCO)] double bridges (denoted as C). The alternating chains are interlinked into 2D coordination networks by the tetrapyridinium spacers. Magnetic studies demonstrate that the magnetic coupling through the double EO azide bridges is ferromagnetic and that through mixed azide/carboxylate bridges is antiferromagnetic. The unprecedented F/AF/AF′/AF′/AF coupling sequence along the chain dictates an uncompensated ground spin state (S = 5/2 per Mn5 unit) and leads to one-dimensional topological ferrimagnetism, which features a minimum in the χT versus T plot. This journal is",

author = "Wang, \{Yan Qin\} and Liu, \{Hou Ting\} and Yan Qi and Gao, \{En Qing\}",

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T1 - Topological ferrimagnetic behaviours of coordination polymers containing manganese(ii) chains with mixed azide and carboxylate bridges and alternating F/AF/AF′/AF′/AF interactions

AU - Wang, Yan Qin

AU - Liu, Hou Ting

AU - Qi, Yan

AU - Gao, En Qing

PY - 2014/8/21

Y1 - 2014/8/21

N2 - Two Mn(ii) complexes with azide and a new zwitterionic tetracarboxylate ligand 1,2,4,5-tetrakis(4-carboxylatopyridinium-1-methylene)benzene (L 1), {[Mn5(L1)2(N3) 8(OH)2]·12H2O}n (1) and {[Mn5(L1)2(N3)8(H 2O)2](ClO4)2·6H 2O}n (2), have been synthesized and characterized crystallographically and magnetically. 1 and 2 contain similar alternating chains constructed by azide and carboxylate bridges. The independent sets of bridges alternate in an ABCCB sequence between adjacent Mn(ii) ions: (EO-N 3)2 double bridges (EO = end-on) (denoted as A), [(EO-N3)(OCO)2] triple bridges (denoted as B) and [(EO-N3)(OCO)] double bridges (denoted as C). The alternating chains are interlinked into 2D coordination networks by the tetrapyridinium spacers. Magnetic studies demonstrate that the magnetic coupling through the double EO azide bridges is ferromagnetic and that through mixed azide/carboxylate bridges is antiferromagnetic. The unprecedented F/AF/AF′/AF′/AF coupling sequence along the chain dictates an uncompensated ground spin state (S = 5/2 per Mn5 unit) and leads to one-dimensional topological ferrimagnetism, which features a minimum in the χT versus T plot. This journal is

AB - Two Mn(ii) complexes with azide and a new zwitterionic tetracarboxylate ligand 1,2,4,5-tetrakis(4-carboxylatopyridinium-1-methylene)benzene (L 1), {[Mn5(L1)2(N3) 8(OH)2]·12H2O}n (1) and {[Mn5(L1)2(N3)8(H 2O)2](ClO4)2·6H 2O}n (2), have been synthesized and characterized crystallographically and magnetically. 1 and 2 contain similar alternating chains constructed by azide and carboxylate bridges. The independent sets of bridges alternate in an ABCCB sequence between adjacent Mn(ii) ions: (EO-N 3)2 double bridges (EO = end-on) (denoted as A), [(EO-N3)(OCO)2] triple bridges (denoted as B) and [(EO-N3)(OCO)] double bridges (denoted as C). The alternating chains are interlinked into 2D coordination networks by the tetrapyridinium spacers. Magnetic studies demonstrate that the magnetic coupling through the double EO azide bridges is ferromagnetic and that through mixed azide/carboxylate bridges is antiferromagnetic. The unprecedented F/AF/AF′/AF′/AF coupling sequence along the chain dictates an uncompensated ground spin state (S = 5/2 per Mn5 unit) and leads to one-dimensional topological ferrimagnetism, which features a minimum in the χT versus T plot. This journal is

UR - https://www.scopus.com/pages/publications/84904431013

U2 - 10.1039/c4dt01151a

DO - 10.1039/c4dt01151a

M3 - 文章

AN - SCOPUS:84904431013

SN - 1477-9226

VL - 43

SP - 11819

EP - 11825

JO - Dalton Transactions

JF - Dalton Transactions

IS - 31

ER -

Topological ferrimagnetic behaviours of coordination polymers containing manganese(ii) chains with mixed azide and carboxylate bridges and alternating F/AF/AF′/AF′/AF interactions

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