Supramolecular structural transformations involving coordination polymers in the solid state

Vittal, Jagadese J.

doi:10.1016/j.ccr.2007.02.002

Cited by 526 publications

(212 citation statements)

References 136 publications

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“…The power of TG-DTA lies in its ability to identify energy changes that occur in the sample with no loss of mass, which TG analysis alone cannot identify. 31,32 For example, we have used TG-DTA to identify molecular rearrangements in porous MOFs that are not accompanied by mass loss or a change of phase.…”

Section: Thermal Studies Of 1-2 4-6 Andmentioning

confidence: 99%

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

et al. 2015

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. (2015). The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid. Dalton Transactions: an international journal of inorganic chemistry, 44 (19), 9269-9280.The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid AbstractThe synthesis, structural and thermal characterisation of a number of coordination complexes featuring the N,O-heteroditopic ligand 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoate, HL are reported. The reaction of H2L with cobalt(II) and nickel(II) nitrates at room temperature in basic DMF/H2O solution gave discrete mononuclear coordination complexes with the general formula {[M(HL)2(H2O)4]·2DMF} (M = Co (1), Ni (2)), whereas the reaction with zinc(II) nitrate gave [Zn(HL)2]∞, 3, a coordination polymer with distorted diamondoid topology and fourfold interpenetration. Coordination about the tetrahedral Zn(II) nodes in 3 are furnished by two pyrazolyl nitrogen atoms and two carboxylate oxygen atoms to give a mixed N2O2 donor set. The desolvation of 8 was followed by powder X-ray diffraction and single crystal X-ray diffraction which show desolvation induces the transition to a more closely packed structure while the coordination geometry about the copper ions and the network topology is retained. Powder X-ray diffraction and microanalysis were used to characterise the bulk purity of the coordination materials 1-6 and 8. The thermal characteristics of 1-2, 4-6 and 8 were studied by TG-DTA. This led to the curious observation of small exothermic events in networks 4, 6, and 8 that appear to be linked to their decomposition. In addition, the solid state structures of H2L and that of its protonated salt, H2L·HNO3, were also determined and revealed that H2L forms a 2-D hydrogen bonded polymer incorporating helical chains formed through N-HO and O-HN interactions, and that [H3L]NO3 forms a 1-D hydrogen-bonded polymer. The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid donor sets with trans-square planar geometry and is fourfold interpenetrated. The desolvation of 8 was followed by powder X-ray diffraction and single crystal X-ray diffraction which show desolvation induces the transition to a more closely packed structure while the coordination geometry about the copper ions and the network topology is retained. Powder X-ray diffraction and microanalysis were used to characterise the bulk purity of the coordination materials 1-6 and 8. The thermal characteristics of 1-2, 4-6 and 8 were studied by TG-DTA. This led to the curious observation of small exothermic events in networks 4, 6, and 8 that appear to be linked to their decomposition. In addition, the solid state structures of H 2 L and that of its protonated salt, H 2 L•HNO 3 , were also determined and revealed that H

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Section: Thermal Studies Of 1-2 4-6 Andmentioning

confidence: 99%

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

et al. 2015

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“…Conversion between coordination polymers, including SI, in the solid state has been reviewed [89]. Examples exist whereby reversible single crystal single crystal transformations mediated by solvent guests [90,91], recrystallization [92] and microwave irradiation/rehydration [93,94].…”

Section: Conversion Between Simentioning

confidence: 99%

Exploring the crystallization landscape of cadmium bis(N-hydroxyethyl, N-isopropyldithiocarbamate), Cd[S₂CN(iPr)CH₂CH₂OH]₂

Tan

Halim

Tiekink³

2015

Zeitschrift Für Kristallographie - Crystalline Materials

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“…Crystal engineering exploits hydrogen bond and other non-covalent directional interaction to design and synthesize new compound with specific properties [2,3]. Among the intermolecular interactions hydrogen bonding interaction plays an important role in determining molecular conformation and supramolecular aggregation of molecules [4]. In simpler expression it can be stated that supramolecular architecture is built up by different hydrogen bonding interaction.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and crystal structure of trans-[Ni(pyzdcH)M2(H2O) 2] based on pyrazine-2,3-dicarboxylic acid

Nikpour¹,

Eshtiagh‐Hosseini²,

Mirzaei³

et al. 2012

Bull. Chem. Soc. Eth.

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ABSTRACT. The determined structure of the title compound C24H20Ni2N8O20 consists of the mononuclear trans-[Ni(pyzdc)2(H2O)2], (pyzdc = pyrazine-2,3-dicarboxylate). The Ni(II) atom is hexa-coordinated by two (pyzdcH) -groups and two water molecules. The coordinated water molecules are in trans-diaxial positions and the (pyzdcH) -anion acts as a bidentate ligand through an O atom of the carboxylate group and the N atom of the pyrazine ring. There are diverse hydrogen bonding interactions such as O-H···N and O-H···O contacts, which lead to the formation of a three-dimensional supramolecular architecture.

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Supramolecular structural transformations involving coordination polymers in the solid state

Cited by 526 publications

References 136 publications

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

Exploring the crystallization landscape of cadmium bis(N-hydroxyethyl, N-isopropyldithiocarbamate), Cd[S₂CN(iPr)CH₂CH₂OH]₂

Synthesis and crystal structure of trans-[Ni(pyzdcH)M<sub>2</sub>(H<sub>2</sub>O) <sub>2</sub>] based on pyrazine-2,3-dicarboxylic acid

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Supramolecular structural transformations involving coordination polymers in the solid state

Cited by 526 publications

References 136 publications

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

The synthesis and characterisation of coordination and hydrogen-bonded networks based on 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid

Exploring the crystallization landscape of cadmium bis(N-hydroxyethyl, N-isopropyldithiocarbamate), Cd[S2CN(iPr)CH2CH2OH]2

Synthesis and crystal structure of trans-[Ni(pyzdcH)M<sub>2</sub>(H<sub>2</sub>O) <sub>2</sub>] based on pyrazine-2,3-dicarboxylic acid

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Exploring the crystallization landscape of cadmium bis(N-hydroxyethyl, N-isopropyldithiocarbamate), Cd[S₂CN(iPr)CH₂CH₂OH]₂