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The synthesis and crystal structure of metal complexes S ‐alkyl‐ N ‐(ferrocenyl‐1‐methylmethylidene)‐dithiocarbazate and the study on their quenching the luminescence of ruthenium(bipyridine) 2 3 +
Author(s) -
Duan ChunYing,
Xia XuBing,
Zhu LongGen,
You XiaoZeng,
Yang Yao,
Wang HuaQin
Publication year - 1994
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19940120405
Subject(s) - chemistry , orthorhombic crystal system , quenching (fluorescence) , ruthenium , luminescence , crystallography , redox , metal , excited state , alkyl , crystal structure , medicinal chemistry , photochemistry , inorganic chemistry , fluorescence , organic chemistry , catalysis , physics , optoelectronics , quantum mechanics , nuclear physics
Abstract The cobalt, nickel, copper, zinc and cadmium complexes of S ‐methyl‐ N ‐(ferrocenyl‐1‐methyl‐methylidene)‐dithiocarbazate (H‐LSM) and S ‐benzyl‐ N ‐(ferrocenyl‐1‐methyl‐methylidene)‐dithiocarbazate (H‐LSB) were synthesized and the crystal structure of Cd[Fe‐C(CH 3 ) = NNCSS‐(CH 3 )] 2 was solved by X‐ray diffraction. The crystal is in the orthorhombic system with space group Pbca , cell parameters a =19.741(3), b =19.924(5), c =15.452(4) Å, and the final factors of R =0.032. The study on quenching the luminescence of Ru(bpy) 2+ 3 by those complexes showed that bimolecular quenching constants obtained from the Stern‐Volmer constant and the excited‐state lifetime were related to the redox potential of the quencher. Linear relationship is shown in the plot of logk q vs. E 1/2 (Q + /Q). The main factor which influences the quenching rate constant and the redox potential is the coordinating ability of the metal in the complex.