Transition metal thiocyanate complexes of picolylcyanoacetamides

Yuniar P Prananto, Aron Urbatsch, Boujemaa Moubaraki, Keith S Murray, David R Turner, Glen B Deacon, Stuart R Batten

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Abstract

A variety of transition metal complexes involving picolylcyanoacetamides (pica=NCCH2CONH-R; R=2-picolyl-(2pica), 3-picolyl- (3pica), 4-picolyl- (4pica)) and thiocyanate have been synthesised and their solid-state structures have been determined. The complexes were all obtained from reactions between the corresponding metals salts and pica ligands with sodium thiocyanate under ambient conditions. Both 3pica and 4pica coordinate to the metal solely through the nitrogen atom of the picolyl group and form discrete tetrahedral [M(NCS)2(pica)2] (3pica; M=Mn, Zn; 4pica; M=Co) and octahedral [M(NCS)2(3pica)4] (M¼Co, Fe, Ni) complexes. In addition, one-dimensional N,S-thiocyanate-bridged coordination polymers poly-[M(m-NCS)2(pica)2] (3pica; M=Cd; 4pica; M=Co, Cd) were obtained. The ligand 2pica gave the discrete octahedral complexes [Co(NCS)2(2pica)2] and [Cd(NO3)2(2pica)2] in which 2pica chelates in a bidentate fashion through its picolyl and carbonyl groups. Magnetic susceptibility measurements on the cobalt(II) complexes were performed and showed short-range antiferromagnetic coupling for the [Co(NCS)2(4pica)2]n 1D polymer.
Original languageEnglish
Pages (from-to)516–528
Number of pages13
JournalAustralian Journal of Chemistry
Volume70
Issue number5
DOIs
Publication statusPublished - 2017

Cite this

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title = "Transition metal thiocyanate complexes of picolylcyanoacetamides",
abstract = "A variety of transition metal complexes involving picolylcyanoacetamides (pica=NCCH2CONH-R; R=2-picolyl-(2pica), 3-picolyl- (3pica), 4-picolyl- (4pica)) and thiocyanate have been synthesised and their solid-state structures have been determined. The complexes were all obtained from reactions between the corresponding metals salts and pica ligands with sodium thiocyanate under ambient conditions. Both 3pica and 4pica coordinate to the metal solely through the nitrogen atom of the picolyl group and form discrete tetrahedral [M(NCS)2(pica)2] (3pica; M=Mn, Zn; 4pica; M=Co) and octahedral [M(NCS)2(3pica)4] (M¼Co, Fe, Ni) complexes. In addition, one-dimensional N,S-thiocyanate-bridged coordination polymers poly-[M(m-NCS)2(pica)2] (3pica; M=Cd; 4pica; M=Co, Cd) were obtained. The ligand 2pica gave the discrete octahedral complexes [Co(NCS)2(2pica)2] and [Cd(NO3)2(2pica)2] in which 2pica chelates in a bidentate fashion through its picolyl and carbonyl groups. Magnetic susceptibility measurements on the cobalt(II) complexes were performed and showed short-range antiferromagnetic coupling for the [Co(NCS)2(4pica)2]n 1D polymer.",
author = "Prananto, {Yuniar P} and Aron Urbatsch and Boujemaa Moubaraki and Murray, {Keith S} and Turner, {David R} and Deacon, {Glen B} and Batten, {Stuart R}",
year = "2017",
doi = "10.1071/CH16648",
language = "English",
volume = "70",
pages = "516–528",
journal = "Australian Journal of Chemistry",
issn = "0004-9425",
publisher = "CSIRO Publishing",
number = "5",

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Transition metal thiocyanate complexes of picolylcyanoacetamides. / Prananto, Yuniar P; Urbatsch, Aron; Moubaraki, Boujemaa; Murray, Keith S; Turner, David R; Deacon, Glen B; Batten, Stuart R.

In: Australian Journal of Chemistry, Vol. 70, No. 5, 2017, p. 516–528.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Transition metal thiocyanate complexes of picolylcyanoacetamides

AU - Prananto, Yuniar P

AU - Urbatsch, Aron

AU - Moubaraki, Boujemaa

AU - Murray, Keith S

AU - Turner, David R

AU - Deacon, Glen B

AU - Batten, Stuart R

PY - 2017

Y1 - 2017

N2 - A variety of transition metal complexes involving picolylcyanoacetamides (pica=NCCH2CONH-R; R=2-picolyl-(2pica), 3-picolyl- (3pica), 4-picolyl- (4pica)) and thiocyanate have been synthesised and their solid-state structures have been determined. The complexes were all obtained from reactions between the corresponding metals salts and pica ligands with sodium thiocyanate under ambient conditions. Both 3pica and 4pica coordinate to the metal solely through the nitrogen atom of the picolyl group and form discrete tetrahedral [M(NCS)2(pica)2] (3pica; M=Mn, Zn; 4pica; M=Co) and octahedral [M(NCS)2(3pica)4] (M¼Co, Fe, Ni) complexes. In addition, one-dimensional N,S-thiocyanate-bridged coordination polymers poly-[M(m-NCS)2(pica)2] (3pica; M=Cd; 4pica; M=Co, Cd) were obtained. The ligand 2pica gave the discrete octahedral complexes [Co(NCS)2(2pica)2] and [Cd(NO3)2(2pica)2] in which 2pica chelates in a bidentate fashion through its picolyl and carbonyl groups. Magnetic susceptibility measurements on the cobalt(II) complexes were performed and showed short-range antiferromagnetic coupling for the [Co(NCS)2(4pica)2]n 1D polymer.

AB - A variety of transition metal complexes involving picolylcyanoacetamides (pica=NCCH2CONH-R; R=2-picolyl-(2pica), 3-picolyl- (3pica), 4-picolyl- (4pica)) and thiocyanate have been synthesised and their solid-state structures have been determined. The complexes were all obtained from reactions between the corresponding metals salts and pica ligands with sodium thiocyanate under ambient conditions. Both 3pica and 4pica coordinate to the metal solely through the nitrogen atom of the picolyl group and form discrete tetrahedral [M(NCS)2(pica)2] (3pica; M=Mn, Zn; 4pica; M=Co) and octahedral [M(NCS)2(3pica)4] (M¼Co, Fe, Ni) complexes. In addition, one-dimensional N,S-thiocyanate-bridged coordination polymers poly-[M(m-NCS)2(pica)2] (3pica; M=Cd; 4pica; M=Co, Cd) were obtained. The ligand 2pica gave the discrete octahedral complexes [Co(NCS)2(2pica)2] and [Cd(NO3)2(2pica)2] in which 2pica chelates in a bidentate fashion through its picolyl and carbonyl groups. Magnetic susceptibility measurements on the cobalt(II) complexes were performed and showed short-range antiferromagnetic coupling for the [Co(NCS)2(4pica)2]n 1D polymer.

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U2 - 10.1071/CH16648

DO - 10.1071/CH16648

M3 - Article

VL - 70

SP - 516

EP - 528

JO - Australian Journal of Chemistry

JF - Australian Journal of Chemistry

SN - 0004-9425

IS - 5

ER -