Mass spectroscopy of 3-arylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-diones and 3-aryl-7-thioxo-7,8-dihydro-6H-pyrimido[4,5-c]pyridazine-5-ones: Dimers containing water cluster and quasi-covalent hydrogen bond

Autor:	Nader Noroozi Pesyan, Jabbar Khalafy, Mehdi Rimaz
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	Electron impact mass spectroscopy Water clustered Dimer Strong intermolecular H-bonding Retro Diels-Alder Chemistry QD1-999
Zdroj:	Current Chemistry Letters, Vol 2, Iss 4, Pp 177-186 (2013)
Druh dokumentu:	article
ISSN:	1927-7296 1927-730X
DOI:	10.5267/j.ccl.2013.08.001
Popis:	Electron impact (EI) mass spectrometer apparatus has been used to monitor the relative intensities of ion clusters of the type Xn(H2O)n where X is 3-arylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-diones (1a-d), 3-aryl-7-thioxo-7,8-dihydro-6H-pyrimido[4,5-c]pyridazine-5-ones (2a-d) and n = 1, 2. The m/z of selected fragments obtained from 1a-d and 2a-d show a clustered water molecule due to strong intermolecular H-bonding between fragment and clustered water molecule.
Databáze:	Directory of Open Access Journals
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