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Titolo:
SYNTHESES AND CRYSTAL-STRUCTURES OF NZYLAMINO)-4-METHYLPYRIDINATO]TRICHLOROTANTALUM(V) AND NZYLAMINO)-6-METHYLPYRIDINATO]TRICHLOROTANTALUM(V)
Autore:
POLAMO M; LESKELA M;
Indirizzi:
UNIV HELSINKI,DEPT CHEM,INORGAN CHEM LAB,POB 55 FIN-00014 HELSINKI FINLAND
Titolo Testata:
Acta chemica Scandinavica
fascicolo: 6-7, volume: 51, anno: 1997,
pagine: 709 - 713
SICI:
0904-213X(1997)51:6-7<709:SACON>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
M. Polamo e M. Leskela, "SYNTHESES AND CRYSTAL-STRUCTURES OF NZYLAMINO)-4-METHYLPYRIDINATO]TRICHLOROTANTALUM(V) AND NZYLAMINO)-6-METHYLPYRIDINATO]TRICHLOROTANTALUM(V)", Acta chemica Scandinavica, 51(6-7), 1997, pp. 709-713

Abstract

The title compounds, bis[2-(benzylamino)-4-methylpyridinato] trichlorotantalum(V) (1) and bis[2-(benzylamino)-6-methylpyridine] trichlorotantalum(V) (2), were prepared in a melt reaction of corresponding aminopyridine and tantalum(V) chloride. Complex 1 crystallizes from toluenein the monoclinic space group C2/c with unit-cell parameters of a=10.577(7), (b)=23.018(11), c=11.102(4) Angstrom and beta = 93.35(4)degrees and 2 crystallizes from p-xylene in the triclinic space group P (1) over bar with a=12.113(11), b=14.329(9), c=10.066(7)Angstrom, alpha = 100.51(5), beta=90.15(7) and gamma=106.53(5)degrees. The atoms of the coordination Spheres around the transition metals form pseudo-pentagonal bipyramids. Both 1 and 2 are C-2 symmetric molecules, in 1 this symmetry is also crystallographic with Ta and one Cl atom on a twofold axis. In 2 a lantalum complex and p-xylene(1:1) solvate form the asymmetric unit.

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Documento generato il 02/10/20 alle ore 02:01:25