Login for students

Login for employees

Publication detail

Less Is More: Three-Coordinate C,N-Chelated Distannynes and Digermynes
Authors: Novák Miroslav | Bouška Marek | Dostál Libor | Růžička Aleš | Hoffmann Alexander | Herres-Pawlis Sonja | Jambor Roman
Year: 2015
Type of publication: článek v odborném periodiku
Name of source: Chemistry - A European Journal
Publisher name: Wiley-VCH
Place: Weinheim
Page from-to: 7820-7829
Titles:
Language Name Abstract Keywords
cze Více je méně : Tří koordinované C,N-Chelatované Distannyny a Digermyny Byly připraveny tří koordinované C,N-Chelatované Distannyny a Digermyny (LM)2 (M=Sn, Ge,) obsahující C,N-ligandy L-3,L-4 , kde L-4=[2,4-di-tBu-6-{(C6H3-2,6-iPr(2))N=CH}C6H2](-)) a L-3=[2,4-di-tBu-6-(Et2NCH2)C6H2](-). koordinované C,N-Chelatované Distannyny; Digermyny
eng Less Is More: Three-Coordinate C,N-Chelated Distannynes and Digermynes We report here the synthesis of new C,N-chelated chlorostannylenes and germylenes (LMCl)-M-3 (M=Sn(1), Ge (2)) and (LMCl)-M-4 (M=Sn(3), Ge (4)) containing sterically demanding C,N-chelating ligands L-3,L-4 (L-3=[2,4-di-tBu-6-(Et2NCH2)C6H2](-)(;) L-4=[2,4-di-tBu-6-{(C6H3-2,6-iPr(2))N=CH}C6H2](-)). Reductions of 1-4 yielded three-coordinate C,N-chelated distannynes and digermynes [(LM)-M-3,4](2) for the first time (5: L-3, M=Sn, 6: L-3, M=Ge, 7: L-4, M=Sn, 8: L-4, M=Ge). For comparison, the four-coordinate distannyne [(LSn)-Sn-5](2) (10) stabilized by N,C,N-chelate L-5 (L-5=[2,6-{(C6H3-2,6-Me-2)NCH}(2)C6H3](-)) was prepared by the reduction of chlorostannylene (LSnCl)-Sn-5 (9). Hence, we highlight the role of donor-driven stabilization of tetrynes. Compounds 1-10 were characterized by means of elemental analysis, NMR spectroscopy, and in the case of 1, 2, 5-7, and 10, also by single-crystal X-ray diffraction analysis. The bonding situation in either three- or four-coordinate distannynes 5, 7, and 10 was evaluated by DFT calculations. DFT calculations were also used to compare the nature of the metal-metal bond in three-coordinate C,N-chelating distannyne [(LSn)-Sn-3](2) (5) and related digermyme [(LGe)-Ge-3](2) (6). coordination modes; density functional calculations; germanium; main-group chemistry; NMR spectroscopy; tin

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives