Hydrogen-bonded supramolecular manganese(II) complexes with network and sheet structures bridged by terephthalate unit

Chang Seop Hong; Jung Hee Yoon; Young Sin You

doi:10.1016/j.ica.2005.05.002

Hydrogen-bonded supramolecular manganese(II) complexes with network and sheet structures bridged by terephthalate unit

Chang Seop Hong, Jung Hee Yoon, Young Sin You

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

9 Citations (Scopus)

Abstract

Two 1D complexes [Mn(4- methylpyrazole)₃(H₂O)(tp)] _n (2) and [Mn(4-methylpyrazole)₄(tp)]_n (3) (tp = terephthalate) were synthesized and characterized by means of X-ray analysis and magnetic studies. The molecular structure of 2 reveals that Mn(II) centers with asymmetric coordination surroundings are bridged by crystallographically different tp ligands, forming a 1D chain. The 1D coordination chains are interconnected by hydrogen bonds between free carboxylate oxygen atoms in a chain and hydrogens of pyrazole nitrogen atoms in neighboring chains, leading to a 3D framework. Compound 3 also exhibits a 1D coordination chain which is hydrogen-bonded to adjacent chains, providing a 2D sheet structure. Interestingly, the structures include intra- and interchain hydrogen bonds contributed from N-H groups of the capping 4-methylpyrazole ligands. Magnetic measurements show weak antiferromagnetic interactions with exchange coupling parameters of J = -0.018 cm^-1 for 2 and J = -0.062 cm^-1 for 3 through the extended tp ligand on the basis of an infinite chain model (H = -JΣS_i • S_{i + 1}).

Original language	English
Pages (from-to)	3341-3346
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	358
Issue number	12
DOIs	https://doi.org/10.1016/j.ica.2005.05.002
Publication status	Published - 2005 Aug 1

Bibliographical note

Funding Information:
We thank an Operation Program on Shared Research Equipment of KBSI and MOST. This work is financially supported by the CRM-KOSEF.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Hydrogen bonds
Magnetic properties
Manganese compounds
Terephthalate ligand

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.ica.2005.05.002

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title = "Hydrogen-bonded supramolecular manganese(II) complexes with network and sheet structures bridged by terephthalate unit",

abstract = "Two 1D complexes [Mn(4- methylpyrazole)3(H2O)(tp)] n (2) and [Mn(4-methylpyrazole)4(tp)]n (3) (tp = terephthalate) were synthesized and characterized by means of X-ray analysis and magnetic studies. The molecular structure of 2 reveals that Mn(II) centers with asymmetric coordination surroundings are bridged by crystallographically different tp ligands, forming a 1D chain. The 1D coordination chains are interconnected by hydrogen bonds between free carboxylate oxygen atoms in a chain and hydrogens of pyrazole nitrogen atoms in neighboring chains, leading to a 3D framework. Compound 3 also exhibits a 1D coordination chain which is hydrogen-bonded to adjacent chains, providing a 2D sheet structure. Interestingly, the structures include intra- and interchain hydrogen bonds contributed from N-H groups of the capping 4-methylpyrazole ligands. Magnetic measurements show weak antiferromagnetic interactions with exchange coupling parameters of J = -0.018 cm-1 for 2 and J = -0.062 cm-1 for 3 through the extended tp ligand on the basis of an infinite chain model (H = -JΣSi • Si + 1).",

keywords = "Hydrogen bonds, Magnetic properties, Manganese compounds, Terephthalate ligand",

author = "Hong, {Chang Seop} and Yoon, {Jung Hee} and You, {Young Sin}",

note = "Funding Information: We thank an Operation Program on Shared Research Equipment of KBSI and MOST. This work is financially supported by the CRM-KOSEF. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2005",

month = aug,

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doi = "10.1016/j.ica.2005.05.002",

language = "English",

volume = "358",

pages = "3341--3346",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier B.V.",

number = "12",

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T1 - Hydrogen-bonded supramolecular manganese(II) complexes with network and sheet structures bridged by terephthalate unit

AU - Hong, Chang Seop

AU - Yoon, Jung Hee

AU - You, Young Sin

N1 - Funding Information: We thank an Operation Program on Shared Research Equipment of KBSI and MOST. This work is financially supported by the CRM-KOSEF. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2005/8/1

Y1 - 2005/8/1

N2 - Two 1D complexes [Mn(4- methylpyrazole)3(H2O)(tp)] n (2) and [Mn(4-methylpyrazole)4(tp)]n (3) (tp = terephthalate) were synthesized and characterized by means of X-ray analysis and magnetic studies. The molecular structure of 2 reveals that Mn(II) centers with asymmetric coordination surroundings are bridged by crystallographically different tp ligands, forming a 1D chain. The 1D coordination chains are interconnected by hydrogen bonds between free carboxylate oxygen atoms in a chain and hydrogens of pyrazole nitrogen atoms in neighboring chains, leading to a 3D framework. Compound 3 also exhibits a 1D coordination chain which is hydrogen-bonded to adjacent chains, providing a 2D sheet structure. Interestingly, the structures include intra- and interchain hydrogen bonds contributed from N-H groups of the capping 4-methylpyrazole ligands. Magnetic measurements show weak antiferromagnetic interactions with exchange coupling parameters of J = -0.018 cm-1 for 2 and J = -0.062 cm-1 for 3 through the extended tp ligand on the basis of an infinite chain model (H = -JΣSi • Si + 1).

AB - Two 1D complexes [Mn(4- methylpyrazole)3(H2O)(tp)] n (2) and [Mn(4-methylpyrazole)4(tp)]n (3) (tp = terephthalate) were synthesized and characterized by means of X-ray analysis and magnetic studies. The molecular structure of 2 reveals that Mn(II) centers with asymmetric coordination surroundings are bridged by crystallographically different tp ligands, forming a 1D chain. The 1D coordination chains are interconnected by hydrogen bonds between free carboxylate oxygen atoms in a chain and hydrogens of pyrazole nitrogen atoms in neighboring chains, leading to a 3D framework. Compound 3 also exhibits a 1D coordination chain which is hydrogen-bonded to adjacent chains, providing a 2D sheet structure. Interestingly, the structures include intra- and interchain hydrogen bonds contributed from N-H groups of the capping 4-methylpyrazole ligands. Magnetic measurements show weak antiferromagnetic interactions with exchange coupling parameters of J = -0.018 cm-1 for 2 and J = -0.062 cm-1 for 3 through the extended tp ligand on the basis of an infinite chain model (H = -JΣSi • Si + 1).

KW - Hydrogen bonds

KW - Magnetic properties

KW - Manganese compounds

KW - Terephthalate ligand

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Hydrogen-bonded supramolecular manganese(II) complexes with network and sheet structures bridged by terephthalate unit

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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