TY - JOUR
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).
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U2 - 10.1016/j.ica.2004.03.001
DO - 10.1016/j.ica.2004.03.001
M3 - Article
AN - SCOPUS:3242707624
SN - 0020-1693
VL - 357
SP - 2939
EP - 2944
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - 10
ER -