Discrete and polymeric complexes formed from cobalt(ii), 4,4′-bipyridine and 2-sulfoterephthalate: Synthetic, crystallographic and magnetic studies

Amitabha Datta, Chiara Massera, Jack K. Clegg, Guillem Aromí, David Aguilà, Jui Hsien Huang, Sheng Jie Chuang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A series of five coordination compounds, namely, {[Co3(stp)2(bipy)(H2O)4]·2H2O}n, (1), {[Co3(stp)2(bipy)5(H2O)6]·4H2O}n, (2), [Co3(stp)2(bipy)4(H2O)10]·8H2O, (3), [Co(Hstp)2(Hbipy)2], (4) and {[Co(stp)2(H2O)2][Co(bipy)2(H2O)4]}·2Hbipy·2H2O, (5) have been synthesised hydrothermally, through the reaction of different molar ratios of 2-sulfoterephthalic acid monosodium salt, Na(H2stp), cobalt(ii) nitrate hexahydrate and the N-donor ancillary co-ligand 4,4′-bipyridine (bipy). Due to the combination of the multiple potential coordination modes of the stp ligand and the bipy co-ligand, the products are structurally and topologically diverse with the connectivities of the materials dependent on the ratios of starting materials employed. Single-crystal X-ray diffraction studies show that compound 1 is a three-dimensional coordination polymer, compound 2 consists of infinite one-dimensional zig-zag chains, compound 3 is a discrete trinuclear complex, compound 4 is a discrete mononuclear complex and compound 5 is an ionic solid consisting of both cobalt containing cations and anions. Magnetic studies show that the Co(ii) ions in 1 are strongly coupled, while 2, 3 and 5 show insignificant coupling due to larger metal-metal separations. Modelling required the introduction of zero field splitting parameters due to orbital angular momentum contributions in these cases.

Original languageEnglish
Pages (from-to)4502-4511
Number of pages10
JournalCrystEngComm
Volume17
Issue number24
DOIs
Publication statusPublished - 2015 Jun 28

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Cobalt
cobalt
Ligands
ligands
Metals
complex compounds
Angular momentum
coordination polymers
Nitrates
metals
Anions
Cations
nitrates
Polymers
Negative ions
angular momentum
Salts
Positive ions
Single crystals
Ions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Datta, Amitabha ; Massera, Chiara ; Clegg, Jack K. ; Aromí, Guillem ; Aguilà, David ; Huang, Jui Hsien ; Chuang, Sheng Jie. / Discrete and polymeric complexes formed from cobalt(ii), 4,4′-bipyridine and 2-sulfoterephthalate : Synthetic, crystallographic and magnetic studies. In: CrystEngComm. 2015 ; Vol. 17, No. 24. pp. 4502-4511.
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title = "Discrete and polymeric complexes formed from cobalt(ii), 4,4′-bipyridine and 2-sulfoterephthalate: Synthetic, crystallographic and magnetic studies",
abstract = "A series of five coordination compounds, namely, {[Co3(stp)2(bipy)(H2O)4]·2H2O}n, (1), {[Co3(stp)2(bipy)5(H2O)6]·4H2O}n, (2), [Co3(stp)2(bipy)4(H2O)10]·8H2O, (3), [Co(Hstp)2(Hbipy)2], (4) and {[Co(stp)2(H2O)2][Co(bipy)2(H2O)4]}·2Hbipy·2H2O, (5) have been synthesised hydrothermally, through the reaction of different molar ratios of 2-sulfoterephthalic acid monosodium salt, Na(H2stp), cobalt(ii) nitrate hexahydrate and the N-donor ancillary co-ligand 4,4′-bipyridine (bipy). Due to the combination of the multiple potential coordination modes of the stp ligand and the bipy co-ligand, the products are structurally and topologically diverse with the connectivities of the materials dependent on the ratios of starting materials employed. Single-crystal X-ray diffraction studies show that compound 1 is a three-dimensional coordination polymer, compound 2 consists of infinite one-dimensional zig-zag chains, compound 3 is a discrete trinuclear complex, compound 4 is a discrete mononuclear complex and compound 5 is an ionic solid consisting of both cobalt containing cations and anions. Magnetic studies show that the Co(ii) ions in 1 are strongly coupled, while 2, 3 and 5 show insignificant coupling due to larger metal-metal separations. Modelling required the introduction of zero field splitting parameters due to orbital angular momentum contributions in these cases.",
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Discrete and polymeric complexes formed from cobalt(ii), 4,4′-bipyridine and 2-sulfoterephthalate : Synthetic, crystallographic and magnetic studies. / Datta, Amitabha; Massera, Chiara; Clegg, Jack K.; Aromí, Guillem; Aguilà, David; Huang, Jui Hsien; Chuang, Sheng Jie.

In: CrystEngComm, Vol. 17, No. 24, 28.06.2015, p. 4502-4511.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Discrete and polymeric complexes formed from cobalt(ii), 4,4′-bipyridine and 2-sulfoterephthalate

T2 - Synthetic, crystallographic and magnetic studies

AU - Datta, Amitabha

AU - Massera, Chiara

AU - Clegg, Jack K.

AU - Aromí, Guillem

AU - Aguilà, David

AU - Huang, Jui Hsien

AU - Chuang, Sheng Jie

PY - 2015/6/28

Y1 - 2015/6/28

N2 - A series of five coordination compounds, namely, {[Co3(stp)2(bipy)(H2O)4]·2H2O}n, (1), {[Co3(stp)2(bipy)5(H2O)6]·4H2O}n, (2), [Co3(stp)2(bipy)4(H2O)10]·8H2O, (3), [Co(Hstp)2(Hbipy)2], (4) and {[Co(stp)2(H2O)2][Co(bipy)2(H2O)4]}·2Hbipy·2H2O, (5) have been synthesised hydrothermally, through the reaction of different molar ratios of 2-sulfoterephthalic acid monosodium salt, Na(H2stp), cobalt(ii) nitrate hexahydrate and the N-donor ancillary co-ligand 4,4′-bipyridine (bipy). Due to the combination of the multiple potential coordination modes of the stp ligand and the bipy co-ligand, the products are structurally and topologically diverse with the connectivities of the materials dependent on the ratios of starting materials employed. Single-crystal X-ray diffraction studies show that compound 1 is a three-dimensional coordination polymer, compound 2 consists of infinite one-dimensional zig-zag chains, compound 3 is a discrete trinuclear complex, compound 4 is a discrete mononuclear complex and compound 5 is an ionic solid consisting of both cobalt containing cations and anions. Magnetic studies show that the Co(ii) ions in 1 are strongly coupled, while 2, 3 and 5 show insignificant coupling due to larger metal-metal separations. Modelling required the introduction of zero field splitting parameters due to orbital angular momentum contributions in these cases.

AB - A series of five coordination compounds, namely, {[Co3(stp)2(bipy)(H2O)4]·2H2O}n, (1), {[Co3(stp)2(bipy)5(H2O)6]·4H2O}n, (2), [Co3(stp)2(bipy)4(H2O)10]·8H2O, (3), [Co(Hstp)2(Hbipy)2], (4) and {[Co(stp)2(H2O)2][Co(bipy)2(H2O)4]}·2Hbipy·2H2O, (5) have been synthesised hydrothermally, through the reaction of different molar ratios of 2-sulfoterephthalic acid monosodium salt, Na(H2stp), cobalt(ii) nitrate hexahydrate and the N-donor ancillary co-ligand 4,4′-bipyridine (bipy). Due to the combination of the multiple potential coordination modes of the stp ligand and the bipy co-ligand, the products are structurally and topologically diverse with the connectivities of the materials dependent on the ratios of starting materials employed. Single-crystal X-ray diffraction studies show that compound 1 is a three-dimensional coordination polymer, compound 2 consists of infinite one-dimensional zig-zag chains, compound 3 is a discrete trinuclear complex, compound 4 is a discrete mononuclear complex and compound 5 is an ionic solid consisting of both cobalt containing cations and anions. Magnetic studies show that the Co(ii) ions in 1 are strongly coupled, while 2, 3 and 5 show insignificant coupling due to larger metal-metal separations. Modelling required the introduction of zero field splitting parameters due to orbital angular momentum contributions in these cases.

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