TY - JOUR
T1 - Reactivity of a β-diketiminate ytterbium(II) hydride with cyclopentadiene derivatives
AU - Richardson, Georgia M.
AU - Howarth, Jesse
AU - Evans, Matthew J.
AU - Edwards, Alison J.
AU - Cameron, Scott A.
AU - Anker, Mathew David
N1 - Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - Cyclopentadienyl ligands are ubiquitous in lanthanide chemistry and have been used extensively to stabilize low-valent lanthanide(II) complexes. We now report the reactions of the β-diketiminate ytterbium(II) hydride [(BDIDipp)Yb(H)]2 (BDIDipp = HC{C(Me)NDipp}2, Dipp = 2,6- i Pr2C6H3) with tetramethylcyclopentadiene, pentamethylcyclopentadiene, indene, and fluorene; to provide ready access to the heteroleptic ytterbium(II) η5-C5R5 cyclopentadienides with extrusion of hydrogen gas. The tetramethylcyclopentadienyl, pentamethylcyclopentadienyl, indenyl, and fluorenyl compounds were characterized by 1H and 13C{1H} NMR, elemental analysis, and single crystal X-ray diffraction. These data indicated that each heteroleptic cyclopentadienide exists as a mononuclear species in both solution and the solid state, formulated with retention of the oxidation state on the ytterbium(II) center. Additionally, the pentamethylcyclopentadienyl derivative was characterized by single crystal neutron diffraction, a study that explored the nature of an agostic interaction between a methyl group and the ytterbium(II) center.
AB - Cyclopentadienyl ligands are ubiquitous in lanthanide chemistry and have been used extensively to stabilize low-valent lanthanide(II) complexes. We now report the reactions of the β-diketiminate ytterbium(II) hydride [(BDIDipp)Yb(H)]2 (BDIDipp = HC{C(Me)NDipp}2, Dipp = 2,6- i Pr2C6H3) with tetramethylcyclopentadiene, pentamethylcyclopentadiene, indene, and fluorene; to provide ready access to the heteroleptic ytterbium(II) η5-C5R5 cyclopentadienides with extrusion of hydrogen gas. The tetramethylcyclopentadienyl, pentamethylcyclopentadienyl, indenyl, and fluorenyl compounds were characterized by 1H and 13C{1H} NMR, elemental analysis, and single crystal X-ray diffraction. These data indicated that each heteroleptic cyclopentadienide exists as a mononuclear species in both solution and the solid state, formulated with retention of the oxidation state on the ytterbium(II) center. Additionally, the pentamethylcyclopentadienyl derivative was characterized by single crystal neutron diffraction, a study that explored the nature of an agostic interaction between a methyl group and the ytterbium(II) center.
KW - cyclopentadienyls
KW - organoytterbium
KW - single crystal neutron diffraction
KW - single crystal X-ray diffraction
KW - Ytterbium(II) hydrides
UR - http://www.scopus.com/inward/record.url?scp=85141046507&partnerID=8YFLogxK
U2 - 10.1080/00958972.2022.2130277
DO - 10.1080/00958972.2022.2130277
M3 - Article
AN - SCOPUS:85141046507
SN - 0095-8972
VL - 75
SP - 1954
EP - 1966
JO - Journal of Coordination Chemistry
JF - Journal of Coordination Chemistry
IS - 11-14
ER -