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A Systematic Study on the Coordination Properties of the Guanidine Ligand Bis(tetramethylguanidino)propane with the Metals Manganese, Cobalt, Nickel, Zinc, Cadmium, Mercury, and Silver
Author(s) -
Neuba Adam,
HerresPawlis Sonja,
Seewald Oliver,
Börner Janna,
Heuwing Andreas J.,
Flörke Ulrich,
Henkel Gerald
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201000133
Subject(s) - chemistry , cobalt , ligand (biochemistry) , nickel , metal , diamine , transition metal , medicinal chemistry , cadmium , metal ions in aqueous solution , coordination complex , inorganic chemistry , polymer chemistry , organic chemistry , catalysis , biochemistry , receptor
The transition metal complexes with the ligand 1,3‐bis( N , N , N′ , N′ ‐tetramethylguanidino)propane (btmgp), [Mn(btmgp)Br 2 ] ( 1 ), [Co(btmgp)Cl 2 ] ( 2 ), [Ni(btmgp)I 2 ] ( 3 ), [Zn(btmgp)Cl 2 ] ( 4 ), [Zn(btmgp)(O 2 CCH 3 ) 2 ] ( 5 ), [Cd(btmgp)Cl 2 ] ( 6 ), [Hg(btmgp)Cl 2 ] ( 7 ) and [Ag 2 (btmgp) 2 ][ClO 4 ] 2 ·2MeCN ( 8 ), were prepared and characterised for the first time. The stoichiometric reaction of the corresponding water‐free metal salts with the ligand btmgp in dry MeCN or THF resulted in the straightforward formation of the mononuclear complexes 1 – 7 and the binuclear complex 8 . In complexes with M II the metal ion shows a distorted tetrahedral coordination whereas in 8 , the coordination of the M I ion is almost linear. The coordination behavior of btmgp and resulting structural parameters of the corresponding complexes were discussed in an comparative approach together with already described complexes of btmgp and the bisguanidine ligand N 1 ,N 2 ‐bis(1,3‐dimethylimidazolidin‐2‐ylidene)‐ethane‐1,2‐diamine (DMEG 2 e), respectively.