Acknowledgments
We are thankful to the Council of Scientific and Industrial Research (CSIR), New Delhi, India, for providing fellowships to Eakta and Gulshan Singh. We acknowledge the co-operation of Dr. Dionisia Sanz and Dr. Rosa M. Claramunt, Departamento de Quimica Organica y Bio-organica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain, for NMR studies.
Additional information
Funding
We are thankful to the Council of Scientific and Industrial Research (CSIR), New Delhi, India, for providing fellowships to Eakta and Gulshan Singh. We acknowledge the co-operation of Dr. Dionisia Sanz and Dr. Rosa M. Claramunt, Departamento de Quimica Organica y Bio-organica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain, for NMR studies.