Abstract
A series of Ru(II) compounds and salts have been synthesized: [Ru(6-carboxylato-bpy)2] (5), [Ru(6-carboxylato-bpy)(tpy)]PF6 (9), [Ru(tpy)2](PF6)2 (8), and [Ru(bpy)2(Pic)]PF6 (11), where 6-carboxy-bpy (1) = 6-carboxy-2,2′-bipyridine, tpy (2) = 2,2′:6′,2″-terpyridine, and Pic = 2-carboxylatopyridine. The compounds have been characterized by NMR, electrospray mass spectrometry (ESI-MS), cyclic voltammetry, absorption and emission spectroscopy (at 100, 140, and 298 K), and single-crystal X-ray diffraction (complex 5). Complex 5 crystallizes in the monoclinic system, space group P21/n, formula RuC22H14N4O4·C 2H5OH, with a = 11.088(3) Å, b = 11.226-(3) Å, c = 35.283(9) Å, β= 91.41(2)°, and Z = 8. A linear dependence on the number of coordinated carboxylato groups and the electrochemical redox potentials was found, ca. 0.4 V lower reduction potential for the oxidation step (Ru(II/III)) per carboxylate group. Also, to the best of our knowledge, these are the first examples (9, 11) of mononuclear Ru(II) complexes containing a carboxypyridine-ruthenium moiety displaying any luminescence emission.
| Original language | English |
|---|---|
| Pages (from-to) | 5850-5858 |
| Number of pages | 9 |
| Journal | Inorganic Chemistry |
| Volume | 36 |
| Issue number | 25 |
| Publication status | Published - 1997 |
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- Inorganic Chemistry
Cite this
Synthesis, Structure, and Photophysical Properties of Novel Ruthenium(II) Carboxypyridine Type Complexes. / Norrby, Thomas; Börje, Anna; Åkermark, Björn; Hammarström, Leif; Alsins, Jan; Lashgari, Kianosh; Norrestam, Rolf; Mårtensson, Jerker; Stenhagen, Gunnar.
In: Inorganic Chemistry, Vol. 36, No. 25, 1997, p. 5850-5858.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis, Structure, and Photophysical Properties of Novel Ruthenium(II) Carboxypyridine Type Complexes
AU - Norrby, Thomas
AU - Börje, Anna
AU - Åkermark, Björn
AU - Hammarström, Leif
AU - Alsins, Jan
AU - Lashgari, Kianosh
AU - Norrestam, Rolf
AU - Mårtensson, Jerker
AU - Stenhagen, Gunnar
PY - 1997
Y1 - 1997
N2 - A series of Ru(II) compounds and salts have been synthesized: [Ru(6-carboxylato-bpy)2] (5), [Ru(6-carboxylato-bpy)(tpy)]PF6 (9), [Ru(tpy)2](PF6)2 (8), and [Ru(bpy)2(Pic)]PF6 (11), where 6-carboxy-bpy (1) = 6-carboxy-2,2′-bipyridine, tpy (2) = 2,2′:6′,2″-terpyridine, and Pic = 2-carboxylatopyridine. The compounds have been characterized by NMR, electrospray mass spectrometry (ESI-MS), cyclic voltammetry, absorption and emission spectroscopy (at 100, 140, and 298 K), and single-crystal X-ray diffraction (complex 5). Complex 5 crystallizes in the monoclinic system, space group P21/n, formula RuC22H14N4O4·C 2H5OH, with a = 11.088(3) Å, b = 11.226-(3) Å, c = 35.283(9) Å, β= 91.41(2)°, and Z = 8. A linear dependence on the number of coordinated carboxylato groups and the electrochemical redox potentials was found, ca. 0.4 V lower reduction potential for the oxidation step (Ru(II/III)) per carboxylate group. Also, to the best of our knowledge, these are the first examples (9, 11) of mononuclear Ru(II) complexes containing a carboxypyridine-ruthenium moiety displaying any luminescence emission.
AB - A series of Ru(II) compounds and salts have been synthesized: [Ru(6-carboxylato-bpy)2] (5), [Ru(6-carboxylato-bpy)(tpy)]PF6 (9), [Ru(tpy)2](PF6)2 (8), and [Ru(bpy)2(Pic)]PF6 (11), where 6-carboxy-bpy (1) = 6-carboxy-2,2′-bipyridine, tpy (2) = 2,2′:6′,2″-terpyridine, and Pic = 2-carboxylatopyridine. The compounds have been characterized by NMR, electrospray mass spectrometry (ESI-MS), cyclic voltammetry, absorption and emission spectroscopy (at 100, 140, and 298 K), and single-crystal X-ray diffraction (complex 5). Complex 5 crystallizes in the monoclinic system, space group P21/n, formula RuC22H14N4O4·C 2H5OH, with a = 11.088(3) Å, b = 11.226-(3) Å, c = 35.283(9) Å, β= 91.41(2)°, and Z = 8. A linear dependence on the number of coordinated carboxylato groups and the electrochemical redox potentials was found, ca. 0.4 V lower reduction potential for the oxidation step (Ru(II/III)) per carboxylate group. Also, to the best of our knowledge, these are the first examples (9, 11) of mononuclear Ru(II) complexes containing a carboxypyridine-ruthenium moiety displaying any luminescence emission.
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M3 - Article
VL - 36
SP - 5850
EP - 5858
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 25
ER -