Dalton Transactions
Paper
8.47–8.45 (m, 2H, Hc), 8.40–8.37 (m, 1H, Hd), 8.28 (m, 4H, He,
Hf′), 8.43 (t, 2H, J = 7.5 Hz, Hf).
4 L.-Y. Yao, L. Qin, T.-Z. Xie, Y.-Z. Li and S.-Y. Yu, Inorg.
Chem., 2011, 50, 6055–6062.
13C NMR (125 MHz, DMSO-d6, 298 K): δ (ppm) = 144.18 (Ca),
139.71 (Cq), 136.06 (Cq), 132.25 (Cd), 131.96 (Cq), 126.66 (Cf),
125.77 (Ce/f′), 124.67 (Cc), 121.13 (Cb), 119.69 (Ce′), 112.73 (Ce/f′).
ESI-MS: m/z = 576.16 corresponding to [2a – 4NO3]4+.
Anal. calcd for C120H84N30O18Pd3·25H2O: C, 47.98; H, 4.50;
N, 13.99%. Found: C, 47.99; H, 4.42; N, 13.99%.
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Conclusions
In summary, we have demonstrated a three component metal-
logel by the self-assembly of already self-assembled palladium(II)
based trinuclear molecular rings. Subtle variations in the
ligand design, choice of metal ion and counter anion of the
ring controlled the gel formation. The multi-stimuli responsive
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gel exhibits reversible transformation between the solution 10 (a) M. Fujita, S. Nagao and K. Ogura, J. Am. Chem. Soc.,
and gel states.
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Acknowledgements
The authors thank the Science and Engineering Research 11 (a) P. Baran, C. M. Marrero, S. Pérez and R. G. Raptis,
Board (SERB) under DST, Government of India (project no.
SB/S1/IC-05/2014) for financial support. We gratefully acknowl-
edge the Department of Chemistry, IIT Madras for NMR,
PXRD, single crystal XRD, SEM and TEM facilities. We also
thank Prof. A. Deshpande and Dr E. Prasad for extending to us
facilities for rheology and DLS studies, respectively.
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