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Synthesis and single crystal structures of first examples of tridentate ligands of (Te, N, S) type and their complexes with palladium(II), platinum(II) and ruthenium(II) by P. Raghavendra Kumar; Shailesh Upreti; Ajai K. Singh is a Chemistry article available to read on EtoBox.

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The First examples of (Te, N, S) type ligands, 2-CH 3 SC 6 H 4 CH@NCH 2 CH 2 TeC 6 H 4 -4-OCH 3 (L 1 ) and 2-CH 3 SC 6 H 4 -CHNHCH 2 CH 2 TeC 6 H 4 -4-OCH 3 (L 2 ), and their metal complexes, [PdCl(L 1 )]PF 6 AE CHCl 3 AE 0.5H 2 O (4), [PtCl(L 1 )]PF 6 (5), [PdCl(L 2 )]ClO 4 .CHCl 3 (6), [PtCl(L 2 )]ClO 4 (7), and [Ru(p-cymene)(L 2 )](PF 6 ) 2 AE CHCl 3 (8), have been synthesized and characterized. The single crystal structures of 4, 6 and 8 have revealed that both the ligands coordinate in them in a tridentate (Te, N, S) mode. The geometry around Pd in both the complexes has been found to be square planar, whereas for Ru in a half sandwich complex 8, it is found to be octahedral. Between two molecules of 4 there are intra and inter molecular weak TeÁ Á ÁCl [3.334(3) and 3.500(3) A ̊, respectively] interactions along with weak intermolecular PdÁ Á ÁTe [3.621(2) A ̊] interactions. The Pd-Te bond lengths are between 2.517(6) and 2.541(25) A ̊and the Ru-Te bond length is 2.630(6) A ̊. The crystal structure of [PdCl 2 (4-MeO-C 6 H 4 -TeCH 2 CH 2 NH 2 )] ( 9) is also determined. It is formed when KPF 6 is not added in the synthesis of 4 and Pd-complex of L 1 is recrystallized. Apart

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Author

P. Raghavendra Kumar; Shailesh Upreti; Ajai K. Singh

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

2008

Language

EN

Field

Chemistry (Physical Sciences)