Assembly of new coordination frameworks in a pH-controlled medium

Syntheses, structures, and properties of (∞)/3[Cd(Hpdc)(H2O)] and (∞)/3[Cd3,(pdc)2(H2O)2]

Long Pan, Xiaoying Huang, Jing Li

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Two 3D cadmium coordination networks (∞)/3[Cd(Hpdc)(H2O)] (1) and (∞)/3[Cd3(pdc)2(H2O)2] (2) have Been synthesized from hydrothermal solutions at 150 °C. Single-phased samples of both compounds can be isolated by adjusting the acidity level of the reactions. Both structures are constructed by a single, multifunctional ligand, 3,5-pyrazoledicarboxylic acid (H3pdc), in different coordination modes. Both 1 and 2 crystallize in the monoclinic crystal system, space group P21/c (No. 14) with a = 6.436(1) Å, b = 12.283(2) Å, c = 8.934(2) Å, β = 104.23(3)°, Z = 4 for 1, and a = 9.744(2) Å, b = 9.821(2) Å, c = 7.496(1) Å, Z = 2 for 2. Both compounds represent new structure types. All metal atoms are seven-fold coordinated in 1 and six-fold coordinated in 2. A comparison is made between the title compounds and related lanthanide series on the coordination habit of the metals and the ligand, as well as the effect of pH on the final products. TGA studies indicate that loss of coordinated water molecules in 1 and 2 occurs at around 213 and 179 °C, respectively, and the decomposition process completes at about 620 and 480 °C for 1 and 2, respectively. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)236-246
Number of pages11
JournalJournal of Solid State Chemistry
Volume152
Issue number1
DOIs
Publication statusPublished - 2000

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assembly
Metals
Ligands
Lanthanoid Series Elements
synthesis
Rare earth elements
Cadmium
Acidity
ligands
habits
Decomposition
acidity
Atoms
metals
cadmium
Crystals
Molecules
Acids
Water
adjusting

Keywords

  • 3,5-pyrazodicarboxylic acid
  • Cadmium compounds
  • Coordination polymers
  • Hydrothermal synthesis

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

@article{48930304f33b4dae9001a801939ede3f,
title = "Assembly of new coordination frameworks in a pH-controlled medium: Syntheses, structures, and properties of (∞)/3[Cd(Hpdc)(H2O)] and (∞)/3[Cd3,(pdc)2(H2O)2]",
abstract = "Two 3D cadmium coordination networks (∞)/3[Cd(Hpdc)(H2O)] (1) and (∞)/3[Cd3(pdc)2(H2O)2] (2) have Been synthesized from hydrothermal solutions at 150 °C. Single-phased samples of both compounds can be isolated by adjusting the acidity level of the reactions. Both structures are constructed by a single, multifunctional ligand, 3,5-pyrazoledicarboxylic acid (H3pdc), in different coordination modes. Both 1 and 2 crystallize in the monoclinic crystal system, space group P21/c (No. 14) with a = 6.436(1) {\AA}, b = 12.283(2) {\AA}, c = 8.934(2) {\AA}, β = 104.23(3)°, Z = 4 for 1, and a = 9.744(2) {\AA}, b = 9.821(2) {\AA}, c = 7.496(1) {\AA}, Z = 2 for 2. Both compounds represent new structure types. All metal atoms are seven-fold coordinated in 1 and six-fold coordinated in 2. A comparison is made between the title compounds and related lanthanide series on the coordination habit of the metals and the ligand, as well as the effect of pH on the final products. TGA studies indicate that loss of coordinated water molecules in 1 and 2 occurs at around 213 and 179 °C, respectively, and the decomposition process completes at about 620 and 480 °C for 1 and 2, respectively. (C) 2000 Academic Press.",
keywords = "3,5-pyrazodicarboxylic acid, Cadmium compounds, Coordination polymers, Hydrothermal synthesis",
author = "Long Pan and Xiaoying Huang and Jing Li",
year = "2000",
doi = "10.1006/jssc.2000.8688",
language = "English",
volume = "152",
pages = "236--246",
journal = "Journal of Solid State Chemistry",
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publisher = "Academic Press Inc.",
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TY - JOUR

T1 - Assembly of new coordination frameworks in a pH-controlled medium

T2 - Syntheses, structures, and properties of (∞)/3[Cd(Hpdc)(H2O)] and (∞)/3[Cd3,(pdc)2(H2O)2]

AU - Pan, Long

AU - Huang, Xiaoying

AU - Li, Jing

PY - 2000

Y1 - 2000

N2 - Two 3D cadmium coordination networks (∞)/3[Cd(Hpdc)(H2O)] (1) and (∞)/3[Cd3(pdc)2(H2O)2] (2) have Been synthesized from hydrothermal solutions at 150 °C. Single-phased samples of both compounds can be isolated by adjusting the acidity level of the reactions. Both structures are constructed by a single, multifunctional ligand, 3,5-pyrazoledicarboxylic acid (H3pdc), in different coordination modes. Both 1 and 2 crystallize in the monoclinic crystal system, space group P21/c (No. 14) with a = 6.436(1) Å, b = 12.283(2) Å, c = 8.934(2) Å, β = 104.23(3)°, Z = 4 for 1, and a = 9.744(2) Å, b = 9.821(2) Å, c = 7.496(1) Å, Z = 2 for 2. Both compounds represent new structure types. All metal atoms are seven-fold coordinated in 1 and six-fold coordinated in 2. A comparison is made between the title compounds and related lanthanide series on the coordination habit of the metals and the ligand, as well as the effect of pH on the final products. TGA studies indicate that loss of coordinated water molecules in 1 and 2 occurs at around 213 and 179 °C, respectively, and the decomposition process completes at about 620 and 480 °C for 1 and 2, respectively. (C) 2000 Academic Press.

AB - Two 3D cadmium coordination networks (∞)/3[Cd(Hpdc)(H2O)] (1) and (∞)/3[Cd3(pdc)2(H2O)2] (2) have Been synthesized from hydrothermal solutions at 150 °C. Single-phased samples of both compounds can be isolated by adjusting the acidity level of the reactions. Both structures are constructed by a single, multifunctional ligand, 3,5-pyrazoledicarboxylic acid (H3pdc), in different coordination modes. Both 1 and 2 crystallize in the monoclinic crystal system, space group P21/c (No. 14) with a = 6.436(1) Å, b = 12.283(2) Å, c = 8.934(2) Å, β = 104.23(3)°, Z = 4 for 1, and a = 9.744(2) Å, b = 9.821(2) Å, c = 7.496(1) Å, Z = 2 for 2. Both compounds represent new structure types. All metal atoms are seven-fold coordinated in 1 and six-fold coordinated in 2. A comparison is made between the title compounds and related lanthanide series on the coordination habit of the metals and the ligand, as well as the effect of pH on the final products. TGA studies indicate that loss of coordinated water molecules in 1 and 2 occurs at around 213 and 179 °C, respectively, and the decomposition process completes at about 620 and 480 °C for 1 and 2, respectively. (C) 2000 Academic Press.

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