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Synthesis and Structures of Vinamidine Mn II , Zn II , and Cd II Iodine Derivatives
Author(s) -
Prust Jörg,
Most Kerstin,
Müller Ilka,
Stasch Andreas,
Roesky Herbert W.,
Usón Isabel
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200106)2001:6<1613::aid-ejic1613>3.0.co;2-z
Subject(s) - chemistry , isostructural , ligand (biochemistry) , manganese , zinc , lithium (medication) , crystal structure , steric effects , metal , chelation , cadmium , medicinal chemistry , monomer , ether , stereochemistry , crystallography , polymer chemistry , inorganic chemistry , organic chemistry , polymer , medicine , biochemistry , receptor , endocrinology
Abstract We have focused on the synthesis of monomeric, functionalized starting materials containing manganese(II), zinc(II), and cadmium(II) by taking advantage of the sterically demanding and chelating property of the substituted vinamidine ligand 2‐[(2,6‐diisopropylphenyl)amino]‐4‐[(2,6‐diisopropylphenyl)imino]pent‐2‐ene (NacNacH). Metal iodine derivatives containing vinamidines as the bulky ligand can be regarded as interesting precursors for preparing complexes with low‐valent metal centers by reduction as long as they are free of coordinated ether. The vinamidine complexes NacNacM(μ‐I) 2 Li(OEt 2 ) 2 [M = Mn ( 3 ), Zn ( 4 ), Cd ( 5 )] are obtained from the corresponding vinamidine lithium complex and MI 2 (M = Mn, Zn, Cd) in good yields. A crystal structure analysis of 3 , 4 , and 5 shows them to be isostructural. All three structures have the vinamidine backbone in a boat conformation with the tetrahedrally coordinated metal center at the prow and the opposing carbon atom at the stern.