Abstract
The preparation and characterization of lithium and iron(II) complexes containing a potentially tridentate biphenolate phosphane ligand are reported. Deprotonation of 2,2′-phenylphosphanyl-bis(4,6-di-tert-butylphenol) (H2LPh) with one or two equivalents of nBuLi in diethyl ether solutions at-35 °C produces binuclear {Li(HLPh)(OEt 2)}2 or tetranuclear Li4(LPh) 2(OEt2)3, respectively. An X-ray study of {Li(HLPh)(OEt2)}2 showed it to be a C i-symmetric dimer composed of two Li(HLPh)(OEt 2) units linked with dative O-Li bonds involving phenolate oxygen donor atoms whereas that of Li4(LPh)2(OEt 2)3 revealed a C2-symmetric structure in which the two biphenolate phosphane ligands are linked with four lithium atoms that bind to three diethyl ether molecules. Treatment of FeCl2 with one or two equivalents of Na2(LPh)(DME)2 in THF at-35 °C generates binuclear Fe2(LPh)2(THF) 2 or mononuclear Fe(HLPh)2(THF)2, respectively. The two iron(II) centers in Fe2(LPh) 2(THF)2 are antiferromagnetically coupled.
| Original language | English |
|---|---|
| Pages (from-to) | 4077-4082 |
| Number of pages | 6 |
| Journal | European Journal of Inorganic Chemistry |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - 2011 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Inorganic Chemistry
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Synthesis and structural characterization of lithium and iron complexes containing a chelating phenolate phosphane ligand. / Liang, Lan Chang; Chang, Yu Ning; Shih, Huan Yu; Lin, Sheng Ta; Lee, Hon Man.
In: European Journal of Inorganic Chemistry, No. 26, 01.09.2011, p. 4077-4082.Research output: Contribution to journal › Article
TY - JOUR
T1 - Synthesis and structural characterization of lithium and iron complexes containing a chelating phenolate phosphane ligand
AU - Liang, Lan Chang
AU - Chang, Yu Ning
AU - Shih, Huan Yu
AU - Lin, Sheng Ta
AU - Lee, Hon Man
PY - 2011/9/1
Y1 - 2011/9/1
N2 - The preparation and characterization of lithium and iron(II) complexes containing a potentially tridentate biphenolate phosphane ligand are reported. Deprotonation of 2,2′-phenylphosphanyl-bis(4,6-di-tert-butylphenol) (H2LPh) with one or two equivalents of nBuLi in diethyl ether solutions at-35 °C produces binuclear {Li(HLPh)(OEt 2)}2 or tetranuclear Li4(LPh) 2(OEt2)3, respectively. An X-ray study of {Li(HLPh)(OEt2)}2 showed it to be a C i-symmetric dimer composed of two Li(HLPh)(OEt 2) units linked with dative O-Li bonds involving phenolate oxygen donor atoms whereas that of Li4(LPh)2(OEt 2)3 revealed a C2-symmetric structure in which the two biphenolate phosphane ligands are linked with four lithium atoms that bind to three diethyl ether molecules. Treatment of FeCl2 with one or two equivalents of Na2(LPh)(DME)2 in THF at-35 °C generates binuclear Fe2(LPh)2(THF) 2 or mononuclear Fe(HLPh)2(THF)2, respectively. The two iron(II) centers in Fe2(LPh) 2(THF)2 are antiferromagnetically coupled.
AB - The preparation and characterization of lithium and iron(II) complexes containing a potentially tridentate biphenolate phosphane ligand are reported. Deprotonation of 2,2′-phenylphosphanyl-bis(4,6-di-tert-butylphenol) (H2LPh) with one or two equivalents of nBuLi in diethyl ether solutions at-35 °C produces binuclear {Li(HLPh)(OEt 2)}2 or tetranuclear Li4(LPh) 2(OEt2)3, respectively. An X-ray study of {Li(HLPh)(OEt2)}2 showed it to be a C i-symmetric dimer composed of two Li(HLPh)(OEt 2) units linked with dative O-Li bonds involving phenolate oxygen donor atoms whereas that of Li4(LPh)2(OEt 2)3 revealed a C2-symmetric structure in which the two biphenolate phosphane ligands are linked with four lithium atoms that bind to three diethyl ether molecules. Treatment of FeCl2 with one or two equivalents of Na2(LPh)(DME)2 in THF at-35 °C generates binuclear Fe2(LPh)2(THF) 2 or mononuclear Fe(HLPh)2(THF)2, respectively. The two iron(II) centers in Fe2(LPh) 2(THF)2 are antiferromagnetically coupled.
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U2 - 10.1002/ejic.201100260
DO - 10.1002/ejic.201100260
M3 - Article
AN - SCOPUS:80052449244
SP - 4077
EP - 4082
JO - Chemische Berichte
JF - Chemische Berichte
SN - 0009-2940
IS - 26
ER -