138853-09-5Relevant articles and documents
Direct mono-insertion of isocyanides into terminal alkynes catalyzed by rare-earth silylamides
Komeyama, Kimihiro,Sasayama, Daisuke,Kawabata, Tomonori,Takehira, Katsuomi,Takaki, Ken
, p. 634 - 636 (2005)
Rare-earth silylamide complexes, Ln[N(SiMe3)2] 3 (Ln = Y, La, Sm, Yb), effectively catalyzed the coupling reaction of isocyanides with both aliphatic and aromatic terminal alkynes under mild conditions. The Royal Society o
Interacting networks of purely organic spin-1/2 dimers
Borozdina, Yulia B.,Mostovich, Evgeny,Enkelmann, Volker,Wolf, Bernd,Cong, Pham T.,Tutsch, Ulrich,Lang, Michael,Baumgarten, Martin
, p. 6618 - 6629 (2014/08/18)
In the present study we report the synthesis of some novel nitronyl nitroxide biradical systems 1-4c with various π-bridges between the radical centres. UV-Vis, IR, EPR and X-ray diffraction studies, along with MS and NMR data where appropriate, are described. Magnetic measurements revealed that the biradicals 1c, 3c and 4c exhibit a moderately strong antiferromagnetic intra-molecular exchange, whereas nitroxide 2c shows a significantly higher exchange coupling, which can only be explained by the presence of strong inter-molecular interactions. From DFT calculations performed on the basis of the X-ray crystal structure of compound 4c, a theoretical value of the intra-dimer coupling constant Jintra = -8.6 K is obtained. Direct proof also for inter-molecular arrangement with Jinter ～ -2 K was provided by the low temperature AC studies of biradical 4c. According to the magnetic characterization, the nitronyl biradical 4c is a promising candidate for a purely organic-based low-dimensional quantum magnet. This journal is the Partner Organisations 2014.
