Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Markku Lämsä"'
1
Solid-contact ion-selective electrodes for aromatic cations based on π-coordinating soft carriers
Autor: Vesa Hietapelto, Andrzej Lewenstam, Ari Ivaska, Jouni Pursiainen, Heli Koskinen, Markku Lämsä, Johan Bobacka, Terhi Alaviuhkola
Publikováno v: Talanta. 58:341-349
Ion-selective electrodes (ISEs) based on π-coordinating carriers were prepared and investigated as potentiometric sensors for aromatic cations, using N -methylpyridinium as a model aromatic cation. Derivatives of tetraphenylborate were studied as ch
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::431d21c9c42dcd56b635f4eaa619c4bb
https://doi.org/10.1016/s0039-9140(02)00284-9
Zobrazit plný text záznamu
2
Synthesis and characterization of new aromatic tweezers and complex formation with tropylium ion in 1,2-dichloroethane
Autor: Eeva-Riitta Kettukangas, Maija Nissinen, Sari Kiviniemi, Jouni Pursiainen, Kari Rissanen, Markku Lämsä
Publikováno v: Journal of Physical Organic Chemistry. 14:551-558
A series of benzene and pyridine tweezers bearing phenyl, naphthyl and anthryl receptor units was prepared and characterized. The x-ray crystal structure of the 1,3-bis(9-methanolanthracene)methylbenzene ligand (5) is reported. UV–visible and NMR s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1f09cc9ec0d2d3aebfa21e1290f1137
https://doi.org/10.1002/poc.392
Zobrazit plný text záznamu
3
Complexation of planar, organic, five-membered cations with crown ethers
Autor: Markku Lämsä, Maija Nissinen, Sari Kiviniemi, Kari Rissanen, Jorma Jalonen, Jouni Pursiainen
Publikováno v: New Journal of Chemistry. 24:47-52
Complexation of six aromatic, nitrogen-containing cations with various crown ethers has been studied using 1H NMR, mass spectrometric and crystallographic methods. Hydrogen bonding appears to be the most important interaction in complexation, but min
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d27494ef2fe1ed7370368a4e93bf3f5
https://doi.org/10.1039/a907608e
Zobrazit plný text záznamu
5
X-Ray and NMR Studies on Host-Guest Inclusion Complex Formation between Crown Ethers and Pyridinium Compounds
Autor: Kari Rissanen, Juhani Huuskonen, Markku Lämsä, Jouni Pursiainen
Publikováno v: Chemistry - A European Journal. 4:84-92
Aromatic–aromatic, π–π, and cation–π interactions can be exploited in the preparation of molecular complexes between benzene-substituted crown ethers and pyridium cations. These complexes have been studied in the gas phase, in solution, and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b5adfe8a70bb8c4ef71eba738f09147
https://doi.org/10.1002/(sici)1521-3765(199801)4:1<84::aid-chem84>3.0.co
Zobrazit plný text záznamu
8
Complexation of tropylium ions with crown ethers and acyclic polyethers examined by fast atom bombardment mass spectrometry
Autor: Olavi Virtanen, Toivo Kuokkanen, Jorma Jalonen, Markku Lämsä
Publikováno v: Journal of Physical Organic Chemistry. 8:377-384
The molecular complex formation of six macrocyclic and six acyclic polyethers with tropylium and 4-methoxyphenyltropylium tetrafluoroborates was observed and characterized in the gas phase by fast atom bombardment mass spectrometry (FABMS), to obtain
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4417f109fb46af4a093da4ec6cb322bb
https://doi.org/10.1002/poc.610080511
Zobrazit plný text záznamu
9
Polar crystals with one-dimensional arrays from achiral components: crystal structures of 2:2 complexes of dibenzo-18-crown-6–imidazolium and pyrazolium perchlorates
Autor: Markku Lämsä, Kari Rissanen, Jouni Pursiainen, Maija Nissinen, Sari Kiviniemi, Atte Sillanpää
Publikováno v: Scopus-Elsevier
Biologically important planar five-ring aromatic bases as their imidazolium and pyrazolium cations form crystalline 2:2 complexes with dibenzo-18-crown-6, creating one-dimensional arrays in a polar crystal lattice.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14cde9181987226653ee06ea149b88d3
https://doi.org/10.1039/a902014d
Zobrazit plný text záznamu
10
Crystal structure of an inclusion complex between dibenzo-24-crown-8 and tropylium tetrafluoroborate
Autor: Tiina Suorsa, Juhani Huuskonen, Jouni Pursiainen, Kari Rissanen, Markku Lämsä
Publikováno v: Chem. Commun.. :1443-1444
The dibenzo-24-crown-8 encapsulates the non-disordered tropylium ion (C7H7+) with charge-transfer type π–π-interactions with average bond distances of 1.35 A and C–C–C angles of 129° confirming a regular delocalised heptagon structure.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::081a54ae613c45c9038086bf4deb5b01
https://doi.org/10.1039/cc9960001443
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje