Abstract
A series of ruthenium hydride compounds containing substituted bidentate pyrrole-imine ligands were synthesized and characterized. Reacting RuHCl(CO)(PPh3)3 with one equivalent of [C4H3NH(2-CH=NR)] in ethanol in the presence of KOH gave compounds {RuH(CO)(PPh3)2[C4H3N(2-CH=NR)]} where trans-Py-Ru-H 1, R = CH2CH2C6H9; cis-Py-Ru-H 2, R = Ph-2-Me; and cis-Py-Ru-H 3, R = C6H11. Heating trans-Py-Ru-H 1 in toluene at 70°C for 12 hr resulted a thermal conversion of the trans-Py-Ru-H 1 into its cis form, {RuH(CO)(PPh3)2[C4H3N(2-CH=NCH2CH2C6H9)]} (cis-Py-Ru-H 1) in very high yield. The 1H NMR spectra of trans-Py-Ru-H 1, cis-Py-Ru-H 2, cis-Py-Ru-H 3, and cis-Py-Ru-H 1 all show a typical triplet at ca. δ–11 for the hydride. The trans and cis form indicate the relative positions of pyrrole ring and hydride. The geometries of trans-Py-Ru-H 1, cis-Py-Ru-H 1, and cis-Py-Ru-H 3 are relatively similar showing typical octahedral geometries with two PPh3 fragments arranged in trans positions.
| Original language | English |
|---|---|
| Journal | Journal of the Chinese Chemical Society |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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- Chemistry(all)
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Thermal isomerization of ruthenium hydride compounds containing asymmetric bidentate pyrrole-imine ligands. / Lai, Hsuan Ting; Chen, Kun Hao; Li, Yong Jie; Wu, Cheng Hsien; Hu, Ching-Han; Lin, Chia Her; Huang, Jui-Hsien.
In: Journal of the Chinese Chemical Society, 01.01.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Thermal isomerization of ruthenium hydride compounds containing asymmetric bidentate pyrrole-imine ligands
AU - Lai, Hsuan Ting
AU - Chen, Kun Hao
AU - Li, Yong Jie
AU - Wu, Cheng Hsien
AU - Hu, Ching-Han
AU - Lin, Chia Her
AU - Huang, Jui-Hsien
PY - 2019/1/1
Y1 - 2019/1/1
N2 - A series of ruthenium hydride compounds containing substituted bidentate pyrrole-imine ligands were synthesized and characterized. Reacting RuHCl(CO)(PPh3)3 with one equivalent of [C4H3NH(2-CH=NR)] in ethanol in the presence of KOH gave compounds {RuH(CO)(PPh3)2[C4H3N(2-CH=NR)]} where trans-Py-Ru-H 1, R = CH2CH2C6H9; cis-Py-Ru-H 2, R = Ph-2-Me; and cis-Py-Ru-H 3, R = C6H11. Heating trans-Py-Ru-H 1 in toluene at 70°C for 12 hr resulted a thermal conversion of the trans-Py-Ru-H 1 into its cis form, {RuH(CO)(PPh3)2[C4H3N(2-CH=NCH2CH2C6H9)]} (cis-Py-Ru-H 1) in very high yield. The 1H NMR spectra of trans-Py-Ru-H 1, cis-Py-Ru-H 2, cis-Py-Ru-H 3, and cis-Py-Ru-H 1 all show a typical triplet at ca. δ–11 for the hydride. The trans and cis form indicate the relative positions of pyrrole ring and hydride. The geometries of trans-Py-Ru-H 1, cis-Py-Ru-H 1, and cis-Py-Ru-H 3 are relatively similar showing typical octahedral geometries with two PPh3 fragments arranged in trans positions.
AB - A series of ruthenium hydride compounds containing substituted bidentate pyrrole-imine ligands were synthesized and characterized. Reacting RuHCl(CO)(PPh3)3 with one equivalent of [C4H3NH(2-CH=NR)] in ethanol in the presence of KOH gave compounds {RuH(CO)(PPh3)2[C4H3N(2-CH=NR)]} where trans-Py-Ru-H 1, R = CH2CH2C6H9; cis-Py-Ru-H 2, R = Ph-2-Me; and cis-Py-Ru-H 3, R = C6H11. Heating trans-Py-Ru-H 1 in toluene at 70°C for 12 hr resulted a thermal conversion of the trans-Py-Ru-H 1 into its cis form, {RuH(CO)(PPh3)2[C4H3N(2-CH=NCH2CH2C6H9)]} (cis-Py-Ru-H 1) in very high yield. The 1H NMR spectra of trans-Py-Ru-H 1, cis-Py-Ru-H 2, cis-Py-Ru-H 3, and cis-Py-Ru-H 1 all show a typical triplet at ca. δ–11 for the hydride. The trans and cis form indicate the relative positions of pyrrole ring and hydride. The geometries of trans-Py-Ru-H 1, cis-Py-Ru-H 1, and cis-Py-Ru-H 3 are relatively similar showing typical octahedral geometries with two PPh3 fragments arranged in trans positions.
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U2 - 10.1002/jccs.201900156
DO - 10.1002/jccs.201900156
M3 - Article
JO - Journal of the Chinese Chemical Society
JF - Journal of the Chinese Chemical Society
SN - 0009-4536
ER -