Expanding rare-earth oxidation state chemistry to molecular complexes of holmium(II) and erbium(II)

Journal of the American Chemical Society
Matthew R MacDonaldWilliam J Evans

Abstract

The first molecular complexes of holmium and erbium in the +2 oxidation state have been generated by reducing Cp'(3)Ln [Cp' = C(5)H(4)SiMe(3); Ln = Ho (1), Er (2)] with KC(8) in the presence of 18-crown-6 in Et(2)O at -35 °C under argon. Purification and crystallization below -35 °C gave isomorphous [(18-crown-6)K][Cp'(3)Ln] [Ln = Ho (3), Er (4)]. The three Cp' ring centroids define a trigonal-planar geometry around each metal ion that is not perturbed by the location of the potassium crown cation near one ring with K-C(Cp') distances of 3.053(8)-3.078(2) Å. The metrical parameters of the three rings are indistinguishable within the error limits. In contrast to Ln(2+) complexes of Eu, Yb, Sm, Tm, Dy, and Nd, 3 and 4 have average Ln-(Cp' ring centroid) distances only 0.029 and 0.021 Å longer than those of the Ln(3+) analogues 1 and 2, a result similar to that previously reported for the 4d(1) Y(2+) complex [(18-crown-6)K][Cp'(3)Y] (5) and the 5d(1) La(2+) complex [K(18-crown-6)(Et(2)O)][Cp″(3)La] [Cp″ = 1,3-(Me(3)Si)(2)C(5)H(3)]. Surprisingly, the UV-vis spectra of 3 and 4 are also very similar to that of 5 with two broad absorptions in the visible region, suggesting that 3-5 have similar electron configurations. Density functio...Continue Reading

References

Aug 13, 2002·Chemical Communications : Chem Comm·François NiefLouis Ricard
Jan 15, 2008·Angewandte Chemie·Peter B HitchcockAndrey V Protchenko
Jul 16, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·François Nief
Oct 26, 2010·Inorganic Chemistry·Benjamin M SchmiegeWilliam J Evans
Sep 17, 2011·Journal of the American Chemical Society·Matthew R MacDonaldWilliam J Evans
Nov 8, 2011·Journal of the American Chemical Society·Robert G DenningMark Irwin
Sep 3, 2001·Angewandte Chemie·Mikhail N BochkarevHerbert Schumann

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Citations

Apr 30, 2013·Inorganic Chemistry·Brian D MahoneyEric J Schelter
Mar 16, 2016·Journal of the American Chemical Society·Ryan R LangeslayWilliam J Evans
Mar 2, 2017·Angewandte Chemie·Mathieu XémardGrégory Nocton
Jan 15, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Nicholas R Rightmire, Timothy P Hanusa
Aug 8, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Wenliang Huang, Paula L Diaconescu
Jan 29, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Leonor MariaKonstantin V Luzyanin
Mar 17, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Alison B AltmanStefan G Minasian
Jul 19, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Phuong D DauJohn K Gibson
Jan 19, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Q-Y WuW-Q Shi
May 23, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Diamantoula ManiakiSpyros P Perlepes
Jan 21, 2016·Chemistry : a European Journal·Thomas Vent-SchmidtSebastian Riedel
Jun 22, 2018·Chemical Communications : Chem Comm·Bianca BaldoVerónica Paredes-García
Jul 3, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Caspar N de Bruin-DickasonCameron Jones
Jun 4, 2014·Angewandte Chemie·Henry S La PierreKarsten Meyer
Aug 25, 2018·Chemical Communications : Chem Comm·Daniel N HuhWilliam J Evans
Nov 16, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Grégory Nocton, Louis Ricard
Jun 4, 2014·Angewandte Chemie·Henry S La PierreKarsten Meyer
Oct 30, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Justin C WedalWilliam J Evans
Apr 28, 2020·Angewandte Chemie·Liviu ChibotaruAlmas Muhtadi
Aug 28, 2020·Chemical Society Reviews·Manfred Manßen, Laurel L Schafer
Sep 24, 2020·Physical Chemistry Chemical Physics : PCCP·Robert L SmithKyungwha Park
Nov 7, 2019·Chemical Communications : Chem Comm·Vasilii DubrovinStanislav Avdoshenko
Nov 6, 2015·Chemistry : a European Journal·Glen B DeaconDaniel Werner
May 18, 2020·The Journal of Chemical Physics·Sree Ganesh BalasubramaniJason M Yu
Apr 17, 2019·Nature Reviews. Chemistry·Evan P BeaumierIan A Tonks
Sep 24, 2020·Chemistry : a European Journal·Moya A Hay, Colette Boskovic
Dec 20, 2020·Chemistry : a European Journal·Maxime TricoireGrégory Nocton

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