Rhenium(I) compounds bound by tripodal ligands of pyridine and N-methylimidazole.
The reaction of Re(CO)(5)Br with tris(2-pyridyl)methanol (tpmOH) leads to unexpectedly complex chemistry with three new compounds forming instead of a single product. In compound 1, the tpmOH ligand binds to the metal in the N,N',N''-mode; 2 has tpmO(-) bound in the N,N',O-mode; while 3 is a dimer with the tpmO(-) ligand utilizing each of the four donor atoms to bridge the two metal centers. The analogous methyl ether ligands, tris(2-pyridyl)methoxymethane (tpmOMe) or tris[2-(l-methylimidazolyl)]methoxymethane (timmOMe), each yielded a single product, 4 and 5, respectively, bound in the N,N',N''-mode, and are new leads for potential radiotherapeutic agents. All compounds have been structurally characterized.
Herrick
Richard S
RS
Department of Chemistry, College of the Holy Cross, Worcester, MA 01610, USA. rherrick@holycross.edu
Ziegler
Christopher J
CJ
Jameson
Donald L
DL
Aquina
Christopher
C
Cetin
Anil
A
Franklin
Brenton R
BR
Condon
Laura R
LR
Barone
Natalie
N
Lopez
Joseph
J