TY - JOUR
T1 - A 2,2′-bis(benzimidazolium)-dibenzo[24]crown[8] rigid pseudorotaxane system
AU - Ghosh, Sabari
AU - Chaudhuri, Tandrima
AU - Schmiedekamp, Ann Marie
AU - Padmanaban, E.
AU - Mukhopadhyay, Chhanda
N1 - Funding Information:
One of the authors (S.G.) thanks the University Grants Commission, New Delhi, for her fellowship (SRF). We thank the CAS Instrumentation Facility, University of Calcutta for recording NMR data. Author (T.C.) acknowledges the infrastructural use of IBM-HS21 server cluster/LAN running parallel version with Linda of University of Burdwan. The authors acknowledge computer use of the Lion-X series of computational clusters of the Research Computing and Cyber infrastructure group, a unit of Information Technology Services at Penn State University. We also acknowledge grant received from UGC funded Major project, F. No. 37-398/2009 (SR) dated 11-01-2010.
Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
PY - 2014/9/23
Y1 - 2014/9/23
N2 - Pseudorotaxanes from the self-assembly of simple 2,2′-bis(benzimidazolium) dications and DB24C8 is a first of its kind when a protonated bis(benzimidazole) without a methylene spacer between the two benzimidazolium units (a very rigid axle without flexibility) thread DB24C8 as a result of H-bonding interactions. The formation of these pseudorotaxanes was first ascertained from 1H NMR spectroscopy and later corroborated by HRMS, 2D NMR and finally supported by rigorous DFT calculations.
AB - Pseudorotaxanes from the self-assembly of simple 2,2′-bis(benzimidazolium) dications and DB24C8 is a first of its kind when a protonated bis(benzimidazole) without a methylene spacer between the two benzimidazolium units (a very rigid axle without flexibility) thread DB24C8 as a result of H-bonding interactions. The formation of these pseudorotaxanes was first ascertained from 1H NMR spectroscopy and later corroborated by HRMS, 2D NMR and finally supported by rigorous DFT calculations.
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U2 - 10.1016/j.tet.2014.06.105
DO - 10.1016/j.tet.2014.06.105
M3 - Article
AN - SCOPUS:84906964170
SN - 0040-4020
VL - 70
SP - 6885
EP - 6893
JO - Tetrahedron
JF - Tetrahedron
IS - 38
ER -