Lithium complexes supported by tripodal diaminebis(aryloxido) ligands: synthesis and structure.
The diaminebis(aryloxido) ligand precursors H(2)L(1) and H(2)L(2) [H(2)L(1) = Me(2)NCH(2)CH(2)N(CH(2)-4-CMe(2)CH(2)CMe(3)-C(6)H(3)OH)(2); H(2)L(2) = Me(2)NCH(2)CH(2)N(CH(2)-4-Me-C(6)H(3)OH)(2)] were synthesized by a straightforward single-step Mannich condensation. Their reactions with 2 molar equivalents of MeLi in thf afforded [Li(4)(μ-L-κ(4)O,N,N,O)(2)(thf)(2)] (1a, L(1); 1b, L(2)) and unexpectedly small amounts (∼9%) of [Li(6)(μ-L-κ(4)O,N,N,O)(2)(μ(3)-Cl)(2)(thf)(4)]·thf (2a·thf; L(1); 2b·thf, L(2)). Stoichiometric reactions of LiCl, MeLi and ligand precursors H(2)L led to the formation of 2a and 2b in high yield (∼80%). All compounds were characterized by chemical and physical techniques including X-ray crystallography for H(2)L(1), H(2)L(2), 1b, 2a and 2b.
Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383, Wrocław, Poland. zj@wchuwr.pl
Zofia
Z
Janas
Tomasz
T
Nerkowski
Ewa
E
Kober
Lucjan B
LB
Jerzykiewicz
Tadeusz
T
Lis
D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003959:Diamines / Q000138:chemical synthesis / Q000737:chemistry*; D006860:Hydrogen Bonding; D008024:Ligands; D008094:Lithium / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010636:Phenols / Q000138:chemical synthesis / Q000737:chemistry*
D056831:Coordination Complexes; D003959:Diamines; D008024:Ligands; D010636:Phenols; D008094:Lithium