Abstrakti
The compounds [M(NH3)8]I2 (M = Eu, Yb) were obtained from reactions in anhydrous liquid ammonia solutions as side products. They were characterized by single-crystal X-ray diffraction and found to be isotypic to the compounds [Ca(NH3)8]X2 (X = Cl, Br, I). The coordination sphere of the lanthanoid(II) cations is not square-antiprismatic but much better described as bicapped trigonal-prismatic. In contrast, quantum-chemical gas-phase calculations show the square-antiprismatic coordination polyhedron (point group S8) to be energetically favored over the bicapped trigonal prism and the latter is not even a true local minimum. Obviously, hydrogen bonding and eventually other weak interactions have an impact on the observed bicapped trigonal-prismatic coordination sphere of the [M(NH3)8]2+ cations in the solid state.
Alkuperäiskieli | Englanti |
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Sivut | 1396-1402 |
Sivumäärä | 7 |
Julkaisu | Zeitschrift fur Anorganische und Allgemeine Chemie |
Vuosikerta | 646 |
Numero | 16 |
Varhainen verkossa julkaisun päivämäärä | 10 kesäk. 2020 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 31 elok. 2020 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Reactions in Anhydrous Liquid Ammonia : Syntheses and Crystal Structures of [M(NH3)8]I2 (M = Eu, Yb) with Bicapped Trigonal-Prismatic Octaammine Lanthanoid(II) Cations'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Tietoaineistot
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CCDC 1994125: Experimental Crystal Structure Determination
Rudel, S. S. (Creator), Graubner, T. (Creator), Karttunen, A. (Creator) & Kraus, F. (Creator), Cambridge Crystallographic Data Centre , 2015
DOI - pysyväislinkki: 10.25505/fiz.icsd.cc24y1ms
Tietoaineisto: Dataset
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CCDC 1994124: Experimental Crystal Structure Determination
Rudel, S. S. (Creator), Graubner, T. (Creator), Karttunen, A. (Creator) & Kraus, F. (Creator), Cambridge Crystallographic Data Centre , 2020
DOI - pysyväislinkki: 10.25505/fiz.icsd.cc24y1lr
Tietoaineisto: Dataset