Elangannan Arunan

Professor of Physical Chemistry at the Indian Institute of Science. Teaching and research, primary and higher education. Science.

[Elangannan Arunan @earunan]

I used to write Letters to the Hindu during 2005-15, some of which were published and more which were not. In 2015, I started blogging . I noted that the online links to some of the letters do not work anymore. https://t.co/49xkgrR1u5

[Elangannan Arunan @earunan]

I am pleased to share this article on hydrogen bond potential for HCN/HNC complexes. To the best of my knowledge, this is the first time a hydrogen bond potential has been proposed. https://t.co/qc18QM8Y2g

[Elangannan Arunan @earunan]

This paper is from our Computational and Data Sciences and uses molecular dynamics simulation. As we showed in our recent papers on hydrogen bonds, this paper also shows that one should not use distance between the two atoms to conclude that it is bonded. https://t.co/7YrZO6tpeR

[ORG@IISc @ORGIISc]

Are atoms really spheres? #IISc researchers say no! Their study reveals that hydrogen atoms in bonds are actually elliptical. This new understanding of long & short radii helps scientists predict molecular structures with far greater precision
#SARAL #ANRF #Shivkumarkalyanaraman

[Elangannan Arunan @earunan]

I am pleased to share this review on hydrogen bond radii for donors and acceptors. We were bold (stupid?) enough to define hydrogen bond radii. van der Waals radii may not be used for confirming / ruling out hydrogen bonds. https://t.co/eu6vqNkLoR

[Elangannan Arunan @earunan]

All atoms are considered spherical though it was recognized that none are. We discuss the long and short radii for hydrogen atom. https://t.co/SBSg7zOPtH

[Elangannan Arunan @earunan]

On the remembrance day of Periyar and MGR. https://t.co/19fc1ec26l

[Elangannan Arunan @earunan]

Sashi Tharoor's comments about the meeting between Mamdani and Trump reminded me of this slide I use in explaining chemical bonds using interactions between humans. Worth thinking about it. I hole the ruling party responsible for ensuring it.

[Elangannan Arunan @earunan]

Second episode of the discussion with Prof. N. Sukumar on chemical bonding. Dr. Mausumi Goswami in front of the microwave spectrometer. https://t.co/rD32CwCoTL

[Elangannan Arunan @earunan]

Today happens to be the birthday of two Nobel Laureates, Marie Curie and C. V. Raman. In 1994, on this day, I decided to start my academic career in India and joined IIT Kanpur as an Assistant Professor in Chemistry. https://t.co/JiUVNRVI3a

[Elangannan Arunan @earunan]

Had a chat with Prof. N. Sukumar on Chemical bonding and in particular hydrogen bonding. It will be on you tube in 3 parts. First part here: The hydrogen bond - do we need to rethink our definition of a chemical bond? - YouTube

[Elangannan Arunan @earunan]

Today happens to be the birth anniversary of Prof. M. Ilanchezian who worked tirelessly for social reform in Tamil Nadu in the first half of 20th century. He worked in Pachaiyappa College as Faculty, Chair and Principal. https://t.co/wCL5v1d1W5

[Elangannan Arunan @earunan]

I have been thinking about Gandhi, King and Mandela. I have started reading the Skin in the game. These men had soul in the game. https://t.co/nTfU5mENv1

[Elangannan Arunan @earunan]

It was very disappointing to read the letter by some scientists in India to PMO accusing the fellow scientists of politcal activism. I wrote my views in this blog. https://t.co/PXAUqflUk9

[Elangannan Arunan @earunan]

1,3,5-trimethylcyclohexane, a surrogate for RP-3 fuel. A comprehensive experimental, computational and kinetic modeling of its pyrolysis. https://t.co/RusEjlrmW9

[Elangannan Arunan @earunan]

I thought of publishing this in Current Science. Apparently, they do not publish anything other than Science. Indian Academy of Sciences has two other online Journals to cater to such articles. This one has just appeared in Confluence. https://t.co/RT9DjVR1PW

[Elangannan Arunan @earunan]

2024 PCCP (Physical Chemistry Chemical Physics) outstanding peer reviewers. Pleased to be in this list. https://t.co/uiiHOJnIEZ via @RoySocChem

[Elangannan Arunan @earunan]

Recent deportation of Indians from US and some Indian parents opting for pre-mature deliver are very disturbing indeed. https://t.co/Y5ZYTPNqQr

[School of Chemistry IISER TVM @Chemie_iisertvm]

@csit_iisertvm organized a Spectra 2025 conference dedicated to "Quantum Science & Applications" on 11 Jan 2025; experts talks by Prof. E Arunan, IISc Bangalore, Prof. Balanaraya, IISER Mohali, Prof. Anindya Datta, IIT Bombay, Prof. R. Swathi for the expert's insights.

[Elangannan Arunan @earunan]

Ten years ago today, Chemical and Engineering News featured carbon bond, discovered in 2013 by us confirmed within a few months by Prof. Guru Row. https://t.co/WeuPieLN40