% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @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}, }