Chemical transformations of a crystalline coordination polymer: a multi-stage solid–vapour reaction manifold

Iñigo Vitorica-Yrezabal, Guillermo Mínguez Espallargas, Janet Soleimannejad, Alastair Florence, Ashleigh Fletcher, Lee Brammer

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In its crystal structure the one-dimensional coordination polymer [Ag4(O2C(CF2)2CF3)4(TMP)3]n (1) (TMP = 2,3,5,6-tetramethylpyrazine) adopts a zig-zag arrangement in which pairs of silver(I) centers bridged by two fluorocarboxylate ligands are linked alternately via one or two neutral TMP ligands. This material can reversibly absorb small alcohols (ROH) in single crystal-to-single crystal transformations, despite the lack of porosity in the crystals, to yield a related material of formula [Ag4(O2C(CF2)2CF3)4(TMP)3(ROH)2]n (1-ROH). The process involves coordination/dissociation of the alcohol to/from the silver (I) centers and, in the process, insertion/deinsertion of the alcohol into one-quarter of the Ag-O bonds of coordination polymer. When in place, the alcohol molecule is also supported by formation of an O-H...O hydrogen bond to the partially dissociated carboxylate group. Upon further heating, 1 can release molecules of TMP into the vapor phase resulting in a separate chemical and structural transformation to yield a two-dimensional layered material of composition [Ag4(O2C(CF2)2CF3)4(TMP)2]n (2). This new transformation occurs via dissociation of Ag-N bonds upon ligand release and formation of new Ag-O bonds. The whole series of transformations has been followed in situ by single crystal and/or powder X-ray diffraction and studied by thermogravimetric analysis. As a mechanistic probe to explore transport within formally nonporous 1, gravimetric CO2 gas sorption/desorption has been conducted. It is proposed that transport of small molecules occurs through the fluorous layers in the crystal.
LanguageEnglish
Pages696-708
Number of pages13
JournalChemical Science
Volume4
Issue number2
Early online date21 Nov 2012
DOIs
Publication statusPublished - 1 Feb 2013

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Thymidine Monophosphate
Polymers
Vapors
Alcohols
Crystalline materials
Single crystals
Ligands
Silver
Molecules
Crystals
X ray powder diffraction
Thermogravimetric analysis
Sorption
Desorption
Hydrogen bonds
Porosity
Crystal structure
Gases
Heating
Chemical analysis

Keywords

  • chemical transformations
  • crystalline polymer
  • crystal structure

Cite this

Vitorica-Yrezabal, Iñigo ; Mínguez Espallargas, Guillermo ; Soleimannejad, Janet ; Florence, Alastair ; Fletcher, Ashleigh ; Brammer, Lee. / Chemical transformations of a crystalline coordination polymer : a multi-stage solid–vapour reaction manifold . In: Chemical Science. 2013 ; Vol. 4, No. 2. pp. 696-708.
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abstract = "In its crystal structure the one-dimensional coordination polymer [Ag4(O2C(CF2)2CF3)4(TMP)3]n (1) (TMP = 2,3,5,6-tetramethylpyrazine) adopts a zig-zag arrangement in which pairs of silver(I) centers bridged by two fluorocarboxylate ligands are linked alternately via one or two neutral TMP ligands. This material can reversibly absorb small alcohols (ROH) in single crystal-to-single crystal transformations, despite the lack of porosity in the crystals, to yield a related material of formula [Ag4(O2C(CF2)2CF3)4(TMP)3(ROH)2]n (1-ROH). The process involves coordination/dissociation of the alcohol to/from the silver (I) centers and, in the process, insertion/deinsertion of the alcohol into one-quarter of the Ag-O bonds of coordination polymer. When in place, the alcohol molecule is also supported by formation of an O-H...O hydrogen bond to the partially dissociated carboxylate group. Upon further heating, 1 can release molecules of TMP into the vapor phase resulting in a separate chemical and structural transformation to yield a two-dimensional layered material of composition [Ag4(O2C(CF2)2CF3)4(TMP)2]n (2). This new transformation occurs via dissociation of Ag-N bonds upon ligand release and formation of new Ag-O bonds. The whole series of transformations has been followed in situ by single crystal and/or powder X-ray diffraction and studied by thermogravimetric analysis. As a mechanistic probe to explore transport within formally nonporous 1, gravimetric CO2 gas sorption/desorption has been conducted. It is proposed that transport of small molecules occurs through the fluorous layers in the crystal.",
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Chemical transformations of a crystalline coordination polymer : a multi-stage solid–vapour reaction manifold . / Vitorica-Yrezabal, Iñigo; Mínguez Espallargas, Guillermo ; Soleimannejad, Janet ; Florence, Alastair; Fletcher, Ashleigh; Brammer, Lee.

In: Chemical Science, Vol. 4, No. 2, 01.02.2013, p. 696-708.

Research output: Contribution to journalArticle

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T1 - Chemical transformations of a crystalline coordination polymer

T2 - Chemical Science

AU - Vitorica-Yrezabal, Iñigo

AU - Mínguez Espallargas, Guillermo

AU - Soleimannejad, Janet

AU - Florence, Alastair

AU - Fletcher, Ashleigh

AU - Brammer, Lee

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N2 - In its crystal structure the one-dimensional coordination polymer [Ag4(O2C(CF2)2CF3)4(TMP)3]n (1) (TMP = 2,3,5,6-tetramethylpyrazine) adopts a zig-zag arrangement in which pairs of silver(I) centers bridged by two fluorocarboxylate ligands are linked alternately via one or two neutral TMP ligands. This material can reversibly absorb small alcohols (ROH) in single crystal-to-single crystal transformations, despite the lack of porosity in the crystals, to yield a related material of formula [Ag4(O2C(CF2)2CF3)4(TMP)3(ROH)2]n (1-ROH). The process involves coordination/dissociation of the alcohol to/from the silver (I) centers and, in the process, insertion/deinsertion of the alcohol into one-quarter of the Ag-O bonds of coordination polymer. When in place, the alcohol molecule is also supported by formation of an O-H...O hydrogen bond to the partially dissociated carboxylate group. Upon further heating, 1 can release molecules of TMP into the vapor phase resulting in a separate chemical and structural transformation to yield a two-dimensional layered material of composition [Ag4(O2C(CF2)2CF3)4(TMP)2]n (2). This new transformation occurs via dissociation of Ag-N bonds upon ligand release and formation of new Ag-O bonds. The whole series of transformations has been followed in situ by single crystal and/or powder X-ray diffraction and studied by thermogravimetric analysis. As a mechanistic probe to explore transport within formally nonporous 1, gravimetric CO2 gas sorption/desorption has been conducted. It is proposed that transport of small molecules occurs through the fluorous layers in the crystal.

AB - In its crystal structure the one-dimensional coordination polymer [Ag4(O2C(CF2)2CF3)4(TMP)3]n (1) (TMP = 2,3,5,6-tetramethylpyrazine) adopts a zig-zag arrangement in which pairs of silver(I) centers bridged by two fluorocarboxylate ligands are linked alternately via one or two neutral TMP ligands. This material can reversibly absorb small alcohols (ROH) in single crystal-to-single crystal transformations, despite the lack of porosity in the crystals, to yield a related material of formula [Ag4(O2C(CF2)2CF3)4(TMP)3(ROH)2]n (1-ROH). The process involves coordination/dissociation of the alcohol to/from the silver (I) centers and, in the process, insertion/deinsertion of the alcohol into one-quarter of the Ag-O bonds of coordination polymer. When in place, the alcohol molecule is also supported by formation of an O-H...O hydrogen bond to the partially dissociated carboxylate group. Upon further heating, 1 can release molecules of TMP into the vapor phase resulting in a separate chemical and structural transformation to yield a two-dimensional layered material of composition [Ag4(O2C(CF2)2CF3)4(TMP)2]n (2). This new transformation occurs via dissociation of Ag-N bonds upon ligand release and formation of new Ag-O bonds. The whole series of transformations has been followed in situ by single crystal and/or powder X-ray diffraction and studied by thermogravimetric analysis. As a mechanistic probe to explore transport within formally nonporous 1, gravimetric CO2 gas sorption/desorption has been conducted. It is proposed that transport of small molecules occurs through the fluorous layers in the crystal.

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KW - crystalline polymer

KW - crystal structure

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