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@ARTICLE{Grne:824943,
author = {Görne, Arno L. and George, Janine and van Leusen, Jan and
Dück, Gerald and Jacobs, Philipp and Kumar, Naveen and
Dronskowski, Richard},
title = {{A}mmonothermal {S}ynthesis, {C}rystal {S}tructure, and
{P}roperties of the {Y}tterbium({II}) and {Y}tterbium({III})
{A}mides and the {F}irst {T}wo {R}are-{E}arth-{M}etal
{G}uanidinates, {Y}b{C}({NH})$_{3}$ and {Y}b({CN}$_{3}$
{H}$_{4}$)$_{3}$},
journal = {Inorganic chemistry},
volume = {55},
number = {12},
issn = {1520-510X},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {FZJ-2016-07439},
pages = {6161 - 6168},
year = {2016},
abstract = {We report the oxidation-controlled synthesis of the
ytterbium amides Yb(NH2)2 and Yb(NH2)3 and the first
rare-earth-metal guanidinates YbC(NH)3 and Yb(CN3H4)3 from
liquid ammonia. For Yb(NH2)2, we present experimental atomic
displacement parameters from powder X-ray diffraction (PXRD)
and density functional theory (DFT)-derived hydrogen
positions for the first time. For Yb(NH2)3, the indexing
proposal based on PXRD arrives at R3̅, a = 6.2477(2) Å, c
= 17.132(1) Å, V = 579.15(4) Å3, and Z = 6. The
oxidation-controlled synthesis was also applied to make the
first rare-earth guanidinates, namely, the doubly
deprotonated YbC(NH)3 and the singly deprotonated
Yb(CN3H4)3. YbC(NH)3 is isostructural with SrC(NH)3, as
derived from PXRD (P63/m, a = 5.2596(2) Å, c = 6.6704(2)
Å, V = 159.81(1) Å3, and Z = 2). Yb(CN3H4)3 crystallizes
in a structure derived from the [ReO3] type, as studied by
powder neutron diffraction (Pn3̅, a = 13.5307(3) Å, V =
2477.22(8) Å3, and Z = 8 at 10 K). Electrostatic and
hydrogen-bonding interactions cooperate to stabilize the
structure with wide and empty channels. The IR spectra of
the guanidinates are compared with DFT-calculated phonon
spectra to identify the vibrational modes. SQUID
magnetometry shows that Yb(CN3H4)3 is a paramagnet with
isolated Yb3+ (4f13) ions. A CONDON 2.0 fit was used to
extract all relevant parameters.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS-SNS},
ddc = {540},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)JCNS-SNS-20110128},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
pid = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-6215},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000378369900054},
pubmed = {pmid:27248288},
doi = {10.1021/acs.inorgchem.6b00736},
url = {https://juser.fz-juelich.de/record/824943},
}