Synthesis and crystal structure of a coordinatively unsaturated organomercury iridium complex (PCP)Ir(HgPh)Cl (PCP = η3-2,6- (tBu2PCH2)2C6H 3)

Xiawei Zhang, Thomas J. Emge, Alan S Goldman

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The title compound (PCP)Ir(HgPh)Cl (1), (PCP = η3-2,6-( tBu2PCH2)2C6H 3), is obtained by the reaction of (PCP)IrHCl and Ph2Hg in toluene solution. Purple crystals of 1 were grown by slow evaporation of benzene solution of 1 and have been studied by X-ray crystallography. The space group is P21/n, a = 13.9384(8) Å, b = 15.1095(8) Å, c = 15.8148(9) Å, β = 111.005(1)°, V = 3109.3(3) Å 3, Z = 4. The geometry at the iridium center is quasi-square pyramidal with Hg at the apical position; the Cl-Ir-C(PCP) angle is 175.87(8)°. The Ir-Hg-C(Ph) angle is 175.90(9)°. The Hg-Ir bond is unusually short: 2.5251(2) Å. This short distance is likely attributable to the absence of a ligand trans to the phenylmercury group. The resulting strong metal-mercury bond may explain the unusual stability of the complex and the failure to eliminate mercury as is commonly observed with organomercury-transition-metal complexes.

Original languageEnglish
Pages (from-to)613-617
Number of pages5
JournalJournal of Chemical Crystallography
Volume33
Issue number8
DOIs
Publication statusPublished - Aug 2003

Fingerprint

Iridium
iridium
Mercury
Crystal structure
crystal structure
X ray crystallography
X Ray Crystallography
Coordination Complexes
Toluene
synthesis
Benzene
crystallography
Transition metals
toluene
Evaporation
Metals
transition metals
benzene
evaporation
Ligands

Keywords

  • Crystal structure
  • Ir-Hg bond
  • Organomercury complex
  • Pincer ligand

ASJC Scopus subject areas

  • Spectroscopy
  • Condensed Matter Physics
  • Structural Biology

Cite this

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title = "Synthesis and crystal structure of a coordinatively unsaturated organomercury iridium complex (PCP)Ir(HgPh)Cl (PCP = η3-2,6- (tBu2PCH2)2C6H 3)",
abstract = "The title compound (PCP)Ir(HgPh)Cl (1), (PCP = η3-2,6-( tBu2PCH2)2C6H 3), is obtained by the reaction of (PCP)IrHCl and Ph2Hg in toluene solution. Purple crystals of 1 were grown by slow evaporation of benzene solution of 1 and have been studied by X-ray crystallography. The space group is P21/n, a = 13.9384(8) {\AA}, b = 15.1095(8) {\AA}, c = 15.8148(9) {\AA}, β = 111.005(1)°, V = 3109.3(3) {\AA} 3, Z = 4. The geometry at the iridium center is quasi-square pyramidal with Hg at the apical position; the Cl-Ir-C(PCP) angle is 175.87(8)°. The Ir-Hg-C(Ph) angle is 175.90(9)°. The Hg-Ir bond is unusually short: 2.5251(2) {\AA}. This short distance is likely attributable to the absence of a ligand trans to the phenylmercury group. The resulting strong metal-mercury bond may explain the unusual stability of the complex and the failure to eliminate mercury as is commonly observed with organomercury-transition-metal complexes.",
keywords = "Crystal structure, Ir-Hg bond, Organomercury complex, Pincer ligand",
author = "Xiawei Zhang and Emge, {Thomas J.} and Goldman, {Alan S}",
year = "2003",
month = "8",
doi = "10.1023/A:1024997827607",
language = "English",
volume = "33",
pages = "613--617",
journal = "Journal of Crystallographic and Spectroscopic Research",
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TY - JOUR

T1 - Synthesis and crystal structure of a coordinatively unsaturated organomercury iridium complex (PCP)Ir(HgPh)Cl (PCP = η3-2,6- (tBu2PCH2)2C6H 3)

AU - Zhang, Xiawei

AU - Emge, Thomas J.

AU - Goldman, Alan S

PY - 2003/8

Y1 - 2003/8

N2 - The title compound (PCP)Ir(HgPh)Cl (1), (PCP = η3-2,6-( tBu2PCH2)2C6H 3), is obtained by the reaction of (PCP)IrHCl and Ph2Hg in toluene solution. Purple crystals of 1 were grown by slow evaporation of benzene solution of 1 and have been studied by X-ray crystallography. The space group is P21/n, a = 13.9384(8) Å, b = 15.1095(8) Å, c = 15.8148(9) Å, β = 111.005(1)°, V = 3109.3(3) Å 3, Z = 4. The geometry at the iridium center is quasi-square pyramidal with Hg at the apical position; the Cl-Ir-C(PCP) angle is 175.87(8)°. The Ir-Hg-C(Ph) angle is 175.90(9)°. The Hg-Ir bond is unusually short: 2.5251(2) Å. This short distance is likely attributable to the absence of a ligand trans to the phenylmercury group. The resulting strong metal-mercury bond may explain the unusual stability of the complex and the failure to eliminate mercury as is commonly observed with organomercury-transition-metal complexes.

AB - The title compound (PCP)Ir(HgPh)Cl (1), (PCP = η3-2,6-( tBu2PCH2)2C6H 3), is obtained by the reaction of (PCP)IrHCl and Ph2Hg in toluene solution. Purple crystals of 1 were grown by slow evaporation of benzene solution of 1 and have been studied by X-ray crystallography. The space group is P21/n, a = 13.9384(8) Å, b = 15.1095(8) Å, c = 15.8148(9) Å, β = 111.005(1)°, V = 3109.3(3) Å 3, Z = 4. The geometry at the iridium center is quasi-square pyramidal with Hg at the apical position; the Cl-Ir-C(PCP) angle is 175.87(8)°. The Ir-Hg-C(Ph) angle is 175.90(9)°. The Hg-Ir bond is unusually short: 2.5251(2) Å. This short distance is likely attributable to the absence of a ligand trans to the phenylmercury group. The resulting strong metal-mercury bond may explain the unusual stability of the complex and the failure to eliminate mercury as is commonly observed with organomercury-transition-metal complexes.

KW - Crystal structure

KW - Ir-Hg bond

KW - Organomercury complex

KW - Pincer ligand

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