Producción Científica Profesorado

Synthesis, characterization and crystal structures of dipyridyl-N-methylimine and cloro-bis (N,N?-2,2?-dipyridyl-N-methylimine)lithium complex



Andrade López, Noemí

2005

Synthesis, characterization and crystal structures of the dipyridil-N-methylimine and cloro-bis(N,N-2,2-dipyridyl-N-methylimine)lithium. Benito Flores-Chávez, Bernat A. Martínez-Ortega, José G. Alvarado-Rodríguez, Noemí Andrade-López*, Journal of Chemical Crystallography, 35, No.6, 2005, 451-456. ISSN: 1074-1542 (print version) ISSN: 1572-8854 (electronic version). DOI: 10.1007/s10870-005-2219-3


Abstract


The preparation and characterization by X-ray crystallography and NMR spectroscopy of the 2,2?-dipyridyl-N-methylimine (dpNmei) and the complex [cloro-bis(N,N?-2,2?-dipyridyl-N-methylimine)]lithium [Li(dpNmei)2(Cl)] is reported. The dpNmei was prepared from the reaction of the 2,2?-dipyridyl ketone (dpk) and methylamine and crystallizes in the monoclinic P21/n space group with a = 6.3887(6), b = 10.1709(10), c = 16.7594(17) (Å), ? = 100.918(2)? and V = 1069.29(18) Å3. The lithium complex was obtained from the reaction of dpNmei and LiCl in a molar ratio 2:1. [Li(dpNmei)2Cl] crystallizes in the orthorhombic Pbcn space group with a = 10.0092(12), b = 9.8201(12), c = 23.669(3) (Å) and V = 2326.4(5) Å3. The crystallographic data show that the lithium ion is five-coordinated with four coordination bonds N?Li due the chelation of dpNmei and one LiCl bond.



Producto de Investigación




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