Organoamido- and aryloxo-lanthanoids. XIII: Organometallic compounds of the lanthanoids. CV - New lanthanoid(III) complexes with pyrazolate ligands

Joanna E. Cosgriff, Glen B. Deacon, Bryan M. Gatehouse, Herbert Schumann

Research output: Contribution to journalArticleResearchpeer-review

27 Citations (Scopus)

Abstract

The complexes Er(Me2pz)3(thf) and Ln(Ph2pz)3(thf)n (Ln = Sc, Y, Gd, Er, n = 2; Ln = Lu, n = 3) (Me2pz- = 3,5-dimethylpyrazolate, thf = tetrahydrofuran, Ph2pz- = 3,5-diphenylpyrazolate) have been prepared by reaction of the lanthanoid metal with bis(pentafluorophenyl)mercury and the pyrazole in thf. The Ln(Ph2pz)3(thf)2 complexes are considered to be eight coordinate with three η2-Ph2pz ligands. Other lanthanoid pyrazolate complexes, Y(pz)3(thf)2, La(Me2pz)3(thf), Cp2Ln(Me2pz)(thf)n (Ln = Y, Lu, n = 0; Ln = Lu, n = 1), (C5Me5)2Y(pz)(thf), (C5Me5)2Y(Mepz)(thf), (C5Me5)2Y(Me2pz)-(thf)2 (pz- = pyrazolate, Mepz- = 3-methylpyrazolate, Cp = cyclopentadienyl) have been synthesized by reaction of LnCl3, Cp2LnCl, or (C5Me5)2LnCl with the appropriate sodium pyrazolate in thf. The structure of Ln(Me2pz)3(thf) (Ln = La or Er) is considered to be a symmetrical dimer with four chelating and two bridging Me2pz groups, and two bridging thf ligands, whereas the cyclopentadienyl complexes are most likely dimers with bridging pyrazolate groups, and lattice thf of solvation.

Original languageEnglish
Pages (from-to)1399-1403
Number of pages5
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume622
Issue number8
Publication statusPublished - 1996

Keywords

  • Cyclopentadienides
  • Lanthanoid complexes
  • Pyrazolates

Cite this

@article{1708092afb364f8d866e6d1d94808bf6,
title = "Organoamido- and aryloxo-lanthanoids. XIII: Organometallic compounds of the lanthanoids. CV - New lanthanoid(III) complexes with pyrazolate ligands",
abstract = "The complexes Er(Me2pz)3(thf) and Ln(Ph2pz)3(thf)n (Ln = Sc, Y, Gd, Er, n = 2; Ln = Lu, n = 3) (Me2pz- = 3,5-dimethylpyrazolate, thf = tetrahydrofuran, Ph2pz- = 3,5-diphenylpyrazolate) have been prepared by reaction of the lanthanoid metal with bis(pentafluorophenyl)mercury and the pyrazole in thf. The Ln(Ph2pz)3(thf)2 complexes are considered to be eight coordinate with three η2-Ph2pz ligands. Other lanthanoid pyrazolate complexes, Y(pz)3(thf)2, La(Me2pz)3(thf), Cp2Ln(Me2pz)(thf)n (Ln = Y, Lu, n = 0; Ln = Lu, n = 1), (C5Me5)2Y(pz)(thf), (C5Me5)2Y(Mepz)(thf), (C5Me5)2Y(Me2pz)-(thf)2 (pz- = pyrazolate, Mepz- = 3-methylpyrazolate, Cp = cyclopentadienyl) have been synthesized by reaction of LnCl3, Cp2LnCl, or (C5Me5)2LnCl with the appropriate sodium pyrazolate in thf. The structure of Ln(Me2pz)3(thf) (Ln = La or Er) is considered to be a symmetrical dimer with four chelating and two bridging Me2pz groups, and two bridging thf ligands, whereas the cyclopentadienyl complexes are most likely dimers with bridging pyrazolate groups, and lattice thf of solvation.",
keywords = "Cyclopentadienides, Lanthanoid complexes, Pyrazolates",
author = "Cosgriff, {Joanna E.} and Deacon, {Glen B.} and Gatehouse, {Bryan M.} and Herbert Schumann",
year = "1996",
language = "English",
volume = "622",
pages = "1399--1403",
journal = "Zeitschrift fur Anorganische und Allgemeine Chemie",
issn = "0044-2313",
publisher = "Wiley-Blackwell",
number = "8",

}

Organoamido- and aryloxo-lanthanoids. XIII : Organometallic compounds of the lanthanoids. CV - New lanthanoid(III) complexes with pyrazolate ligands. / Cosgriff, Joanna E.; Deacon, Glen B.; Gatehouse, Bryan M.; Schumann, Herbert.

In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 622, No. 8, 1996, p. 1399-1403.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Organoamido- and aryloxo-lanthanoids. XIII

T2 - Organometallic compounds of the lanthanoids. CV - New lanthanoid(III) complexes with pyrazolate ligands

AU - Cosgriff, Joanna E.

AU - Deacon, Glen B.

AU - Gatehouse, Bryan M.

AU - Schumann, Herbert

PY - 1996

Y1 - 1996

N2 - The complexes Er(Me2pz)3(thf) and Ln(Ph2pz)3(thf)n (Ln = Sc, Y, Gd, Er, n = 2; Ln = Lu, n = 3) (Me2pz- = 3,5-dimethylpyrazolate, thf = tetrahydrofuran, Ph2pz- = 3,5-diphenylpyrazolate) have been prepared by reaction of the lanthanoid metal with bis(pentafluorophenyl)mercury and the pyrazole in thf. The Ln(Ph2pz)3(thf)2 complexes are considered to be eight coordinate with three η2-Ph2pz ligands. Other lanthanoid pyrazolate complexes, Y(pz)3(thf)2, La(Me2pz)3(thf), Cp2Ln(Me2pz)(thf)n (Ln = Y, Lu, n = 0; Ln = Lu, n = 1), (C5Me5)2Y(pz)(thf), (C5Me5)2Y(Mepz)(thf), (C5Me5)2Y(Me2pz)-(thf)2 (pz- = pyrazolate, Mepz- = 3-methylpyrazolate, Cp = cyclopentadienyl) have been synthesized by reaction of LnCl3, Cp2LnCl, or (C5Me5)2LnCl with the appropriate sodium pyrazolate in thf. The structure of Ln(Me2pz)3(thf) (Ln = La or Er) is considered to be a symmetrical dimer with four chelating and two bridging Me2pz groups, and two bridging thf ligands, whereas the cyclopentadienyl complexes are most likely dimers with bridging pyrazolate groups, and lattice thf of solvation.

AB - The complexes Er(Me2pz)3(thf) and Ln(Ph2pz)3(thf)n (Ln = Sc, Y, Gd, Er, n = 2; Ln = Lu, n = 3) (Me2pz- = 3,5-dimethylpyrazolate, thf = tetrahydrofuran, Ph2pz- = 3,5-diphenylpyrazolate) have been prepared by reaction of the lanthanoid metal with bis(pentafluorophenyl)mercury and the pyrazole in thf. The Ln(Ph2pz)3(thf)2 complexes are considered to be eight coordinate with three η2-Ph2pz ligands. Other lanthanoid pyrazolate complexes, Y(pz)3(thf)2, La(Me2pz)3(thf), Cp2Ln(Me2pz)(thf)n (Ln = Y, Lu, n = 0; Ln = Lu, n = 1), (C5Me5)2Y(pz)(thf), (C5Me5)2Y(Mepz)(thf), (C5Me5)2Y(Me2pz)-(thf)2 (pz- = pyrazolate, Mepz- = 3-methylpyrazolate, Cp = cyclopentadienyl) have been synthesized by reaction of LnCl3, Cp2LnCl, or (C5Me5)2LnCl with the appropriate sodium pyrazolate in thf. The structure of Ln(Me2pz)3(thf) (Ln = La or Er) is considered to be a symmetrical dimer with four chelating and two bridging Me2pz groups, and two bridging thf ligands, whereas the cyclopentadienyl complexes are most likely dimers with bridging pyrazolate groups, and lattice thf of solvation.

KW - Cyclopentadienides

KW - Lanthanoid complexes

KW - Pyrazolates

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M3 - Article

AN - SCOPUS:0000922338

VL - 622

SP - 1399

EP - 1403

JO - Zeitschrift fur Anorganische und Allgemeine Chemie

JF - Zeitschrift fur Anorganische und Allgemeine Chemie

SN - 0044-2313

IS - 8

ER -