TY - JOUR
T1 - On the Affinity between Fullerenes and Deltahedral Zintl Ions
T2 - A UV/Vis Spectroscopic Investigation
AU - Frischhut, Sabine
AU - Machado de Carvalho, João G.
AU - Karttunen, Antti J.
AU - Fässler, Thomas F.
PY - 2018
Y1 - 2018
N2 - The close relationship of C60 and deltahedral tetrel element cluster anions has been pointed out before. We report herein on UV/Vis spectra of the Zintl anions and compounds [Ge9]2–, [(CH2=CH)2Ge9]2–, [{(Me3Si)3Si}3Ge9]–, {(Me3Si)3Si}3Ge9CH2CH3, {(Me3Si)3Si}3Ge9(CH2)2CH3, {(Me3Si)3Si}3Ge9(CH2)3CH=CH2, and [{(Me3Si)3Si}3Ge9CH2CH3]Pt(PPh3). The spectra are compared to those of the C60 fullerene, which were recorded under the same conditions. The UV/Vis spectrum of pristine [Ge9]2– resembles that of C60 and at higher concentration hint at the known trimeric [(Ge9)3]6–. The influence of ligand substitution at the Ge9 cluster-core is highlighted. For this, the synthesis of the specifically functionalized deltahedral Ge9 clusters {(Me3Si)3Si}3Ge9(CH2)2CH3, {(Me3Si)3Si}3Ge9(CH2)2CH=CH2, and {(Me3Si)3Si}3Ge9(CH2)3C6H5 are reported for the first time and is achieved by the reaction of K[{(Me3Si)3Si}3Ge9] with the respective alkyl halides in acetonitrile. The newly synthesized products were characterized by NMR spectroscopy.
AB - The close relationship of C60 and deltahedral tetrel element cluster anions has been pointed out before. We report herein on UV/Vis spectra of the Zintl anions and compounds [Ge9]2–, [(CH2=CH)2Ge9]2–, [{(Me3Si)3Si}3Ge9]–, {(Me3Si)3Si}3Ge9CH2CH3, {(Me3Si)3Si}3Ge9(CH2)2CH3, {(Me3Si)3Si}3Ge9(CH2)3CH=CH2, and [{(Me3Si)3Si}3Ge9CH2CH3]Pt(PPh3). The spectra are compared to those of the C60 fullerene, which were recorded under the same conditions. The UV/Vis spectrum of pristine [Ge9]2– resembles that of C60 and at higher concentration hint at the known trimeric [(Ge9)3]6–. The influence of ligand substitution at the Ge9 cluster-core is highlighted. For this, the synthesis of the specifically functionalized deltahedral Ge9 clusters {(Me3Si)3Si}3Ge9(CH2)2CH3, {(Me3Si)3Si}3Ge9(CH2)2CH=CH2, and {(Me3Si)3Si}3Ge9(CH2)3C6H5 are reported for the first time and is achieved by the reaction of K[{(Me3Si)3Si}3Ge9] with the respective alkyl halides in acetonitrile. The newly synthesized products were characterized by NMR spectroscopy.
KW - Agglomeration
KW - Cluster compounds
KW - Germanium, Functionalities, UV/Vis spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85052632639&partnerID=8YFLogxK
U2 - 10.1002/zaac.201800293
DO - 10.1002/zaac.201800293
M3 - Article
AN - SCOPUS:85052632639
SN - 0044-2313
VL - 644
SP - 1337
EP - 1343
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
IS - 21
ER -