A Benzaldehyde Derivative as a Chelating Ligand: Helical Manganese(II) Coordination Polymers Assembling into a Porous Solid

Dulcevscaia, Galina; Liu, Shi-Xia; Hauser, Jürg; Krämer, Karl; Frei, Gabriela Claudia; Möller, Andreas; Decurtins, Silvio (2013). A Benzaldehyde Derivative as a Chelating Ligand: Helical Manganese(II) Coordination Polymers Assembling into a Porous Solid. Crystal growth & design, 13(9), pp. 4138-4144. Washington, D.C.: American Chemical Society 10.1021/cg400972k

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A molecular, porous crystalline material constructed from neutral helical coordination polymers incorporating manganese(II) ions and two types of bridging ligands, namely the deprotonated form of 2-hydroxy-5-methoxy-3-nitrobenzaldehyde (HL) and isobutyrate (iB−), has been obtained and structurally characterized. Structural analysis reveals that within the coordination polymer each benzaldehyde derivative ligates two manganese ions in 6-membered chelating rings, and the isobutyrate ligands cooperatively chelate either two or three manganese ions. The solid state assembly of the resulting polymeric chains of formula [Mn4(L)2(iB)6]n (1), described in the polar space group R3c, is associated with tubular channels occupied by MeCN solvent molecules (1·xMeCN; x ≤ 9). TGA profiles and PXRD measurements demonstrate that the crystallinity of the solid remains intact in its fully desolvated form, and its stability and crystallinity are ensured up to a temperature of 190 °C. Gas adsorption properties of desolvated crystals were probed, but no remarkable sorption capacity of N2 and only a limited one for CO2 could be observed. Magnetic susceptibility data reveal an antiferromagnetic type of coupling between adjacent manganese(II) ions along the helical chains with energy parameters J1 = −5.9(6) cm−1 and J2 = −1.8(9) cm−1.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Dulcevscaia, Galina; Liu, Shi-Xia; Hauser, Jürg; Krämer, Karl; Frei, Gabriela Claudia and Decurtins, Silvio

Subjects:

500 Science > 540 Chemistry

ISSN:

1528-7483

Publisher:

American Chemical Society

Language:

English

Submitter:

Karl Krämer

Date Deposited:

16 Dec 2013 16:25

Last Modified:

26 Aug 2015 15:04

Publisher DOI:

10.1021/cg400972k

BORIS DOI:

10.7892/boris.39111

URI:

https://boris.unibe.ch/id/eprint/39111

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