Synthesis and crystal structures of water-soluble rhodium(III) complexes with 1,4,7-triazacyclononane and 2,2′-bipyridine supporting ligands

Hideki Hayashi; Hiromi Nishida; Seiji Ogo; Shunichi Fukuzumi

doi:10.1016/j.ica.2004.03.001

Synthesis and crystal structures of water-soluble rhodium(III) complexes with 1,4,7-triazacyclononane and 2,2^′-bipyridine supporting ligands

Hideki Hayashi, Hiromi Nishida, Seiji Ogo, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

New water-soluble rhodium(III) complexes with a tacn (1,4,7- triazacyclononane) and a bpy (2,2^′-bipyridine) supporting ligands were synthesized. The reaction of [Rh^III(tacn)Cl₃] (1) with equimolar amount of bpy and two equivalents of AgNO₃ in H₂O at reflux for 10 h gave a water-soluble chloro complex [Rh ^III(tacn)(bpy)Cl](NO₃)₂ {2(NO₃) ₂}. Complex 2(NO₃)₂ was treated with equimolar amount of AgNO₃ in H₂O at reflux for 10 h to give a water-soluble nitrato complex [Rh^III(tacn)(bpy)(NO ₃)](NO₃)₂ {3(NO₃)₂}. Water-solubility of 3 with NO₃^- ligand (46.5 mg/mL) is high compared with that of 2 with Cl^- ligand (14.5 mg/mL) under the same conditions (at pH 7.0 at 25°C). The structures of 2 and 3 were unequivocally determined by X-ray analysis. Their structures in H₂O were also examined by ¹H NMR, IR, and electrospray ionization mass spectrometry (ESI-MS).

Original language	English
Pages (from-to)	2939-2944
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	357
Issue number	10
DOIs	https://doi.org/10.1016/j.ica.2004.03.001
State	Published - 20 Jul 2004

Bibliographical note

Funding Information:
Financial supports of this research by the Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, and Grants-in-Aid for Scientific Research (11228205, 15036242, and 15350033) are greatly acknowledged.

Keywords

Crystal structures
Water-soluble rhodium complexes

Access to Document

10.1016/j.ica.2004.03.001

Cite this

@article{fb497be3609d4e00a5dff5e3b1d6f1a7,

title = "Synthesis and crystal structures of water-soluble rhodium(III) complexes with 1,4,7-triazacyclononane and 2,2′-bipyridine supporting ligands",

abstract = "New water-soluble rhodium(III) complexes with a tacn (1,4,7- triazacyclononane) and a bpy (2,2′-bipyridine) supporting ligands were synthesized. The reaction of [RhIII(tacn)Cl3] (1) with equimolar amount of bpy and two equivalents of AgNO3 in H2O at reflux for 10 h gave a water-soluble chloro complex [Rh III(tacn)(bpy)Cl](NO3)2 {2(NO3) 2}. Complex 2(NO3)2 was treated with equimolar amount of AgNO3 in H2O at reflux for 10 h to give a water-soluble nitrato complex [RhIII(tacn)(bpy)(NO 3)](NO3)2 {3(NO3)2}. Water-solubility of 3 with NO3- ligand (46.5 mg/mL) is high compared with that of 2 with Cl- ligand (14.5 mg/mL) under the same conditions (at pH 7.0 at 25°C). The structures of 2 and 3 were unequivocally determined by X-ray analysis. Their structures in H2O were also examined by 1H NMR, IR, and electrospray ionization mass spectrometry (ESI-MS).",

keywords = "Crystal structures, Water-soluble rhodium complexes",

author = "Hideki Hayashi and Hiromi Nishida and Seiji Ogo and Shunichi Fukuzumi",

note = "Funding Information: Financial supports of this research by the Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, and Grants-in-Aid for Scientific Research (11228205, 15036242, and 15350033) are greatly acknowledged.",

year = "2004",

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doi = "10.1016/j.ica.2004.03.001",

language = "English",

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T1 - Synthesis and crystal structures of water-soluble rhodium(III) complexes with 1,4,7-triazacyclononane and 2,2′-bipyridine supporting ligands

AU - Hayashi, Hideki

AU - Nishida, Hiromi

AU - Ogo, Seiji

AU - Fukuzumi, Shunichi

N1 - Funding Information: Financial supports of this research by the Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, and Grants-in-Aid for Scientific Research (11228205, 15036242, and 15350033) are greatly acknowledged.

PY - 2004/7/20

Y1 - 2004/7/20

N2 - New water-soluble rhodium(III) complexes with a tacn (1,4,7- triazacyclononane) and a bpy (2,2′-bipyridine) supporting ligands were synthesized. The reaction of [RhIII(tacn)Cl3] (1) with equimolar amount of bpy and two equivalents of AgNO3 in H2O at reflux for 10 h gave a water-soluble chloro complex [Rh III(tacn)(bpy)Cl](NO3)2 {2(NO3) 2}. Complex 2(NO3)2 was treated with equimolar amount of AgNO3 in H2O at reflux for 10 h to give a water-soluble nitrato complex [RhIII(tacn)(bpy)(NO 3)](NO3)2 {3(NO3)2}. Water-solubility of 3 with NO3- ligand (46.5 mg/mL) is high compared with that of 2 with Cl- ligand (14.5 mg/mL) under the same conditions (at pH 7.0 at 25°C). The structures of 2 and 3 were unequivocally determined by X-ray analysis. Their structures in H2O were also examined by 1H NMR, IR, and electrospray ionization mass spectrometry (ESI-MS).

AB - New water-soluble rhodium(III) complexes with a tacn (1,4,7- triazacyclononane) and a bpy (2,2′-bipyridine) supporting ligands were synthesized. The reaction of [RhIII(tacn)Cl3] (1) with equimolar amount of bpy and two equivalents of AgNO3 in H2O at reflux for 10 h gave a water-soluble chloro complex [Rh III(tacn)(bpy)Cl](NO3)2 {2(NO3) 2}. Complex 2(NO3)2 was treated with equimolar amount of AgNO3 in H2O at reflux for 10 h to give a water-soluble nitrato complex [RhIII(tacn)(bpy)(NO 3)](NO3)2 {3(NO3)2}. Water-solubility of 3 with NO3- ligand (46.5 mg/mL) is high compared with that of 2 with Cl- ligand (14.5 mg/mL) under the same conditions (at pH 7.0 at 25°C). The structures of 2 and 3 were unequivocally determined by X-ray analysis. Their structures in H2O were also examined by 1H NMR, IR, and electrospray ionization mass spectrometry (ESI-MS).

KW - Crystal structures

KW - Water-soluble rhodium complexes

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