Bowl vs Saddle Conformations in Cyclononatriene-Based
Anion Binding Hosts
Posted on 1998-04-03 - 00:00
The synthesis of organometallic complexes
[{Ru(p-MeC6H4CHMe2)}n(C21H24S3)][CF3SO3]2n
(n = 1, 6; n = 2, 7)
and
[{Ir(C5Me5)}2(C21H24S3)][CF3SO3]4
(9) based upon the trimeric
macrocycle cyclotris(dimethylthiophenylene) (4) is
reported. A saddle conformation is
identified for the free ligand 4 and complexes 6
and 9 by X-ray crystallography. The anion
complexation behavior of complex 9 is compared with the
related cyclotriveratrylene complex
[{Ru(p-MeC6H4CHMe2)}2(C27H30O6)][CF3SO3]4
(2), which possesses a bowl-shaped conformation, by 1H NMR titration studies in a variety of solvents.
While host 2 displays a significant
affinity for halides with binding constants of up to 1.25(7) ×
103 M-1 in nitromethane
solution,
the absence of a molecular cavity in 9 results in very
little specific anion affinity. The 1,3-alternate calix[4]arene complex
[{Ru(η6-p-MeC6H4CHMe2)}2(η6:η6-C40H48)][BF4]4
(11) is also
reported and shown to bind anions in an unusual
C−H···anion hydrogen-bonding fashion
by X-ray crystallography and 1H NMR.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Staffilani, Mara; Bonvicini, Giuliana; Steed, Jonathan W.; Holman, K. Travis; Atwood, Jerry L.; R. J. Elsegood, Mark (2016). Bowl vs Saddle Conformations in Cyclononatriene-Based
Anion Binding Hosts. ACS Publications. Collection. https://doi.org/10.1021/om970739q
or
Select your citation style and then place your mouse over the citation text to select it.
SHARE
Usage metrics
Read the peer-reviewed publication
AUTHORS (6)
MS
Mara Staffilani
GB
Giuliana Bonvicini
JS
Jonathan W. Steed
KH
K. Travis Holman
JA
Jerry L. Atwood
MR
Mark R. J. Elsegood