• Organic Synthesis and Main Group Chemistry

  • Organic Synthesis and Main Group Chemistry

  • Organic Synthesis and Main Group Chemistry

  • Organic Synthesis and Main Group Chemistry



Roy Group Focuses On


1. Organic Synthesis and Methodology Developments Exploiting the Carbene Intermediates.


2. Organic Homogeneous Catalysis: Carbene Mediated C-H Functionalization Reactions using Organometallic Complexes as the Efficient Catalysts.


3. Syntheses of Carbene Stabilized Oxygen and Moisture Sensitive Organo-Main Group (13 to 15) Compounds: Structure, Properties and Small Molecule Activation.


4. Computational Studies to Predict Ground state, Bonding and Stability of Novel and Exotic Main Group Compounds.

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  • Our work on "EDA-NOCV Analysis of Donor-Base-Stabilized Elusive Monomeric Aluminum Phosphides [(L)P−Al(L′); L, L′ = cAACMe, NHCMe, PMe3]" is accepted in ACS Omega. Congratulations Maria!! Read Accepted Article.

  • Our work on "Isolation of Elusive Phosphinidene-Chlorotetrylenes: The Heavier Cyanogen Chloride Analogues" is now published in Chemistry - A European Journal. Congratulations Ekta and Team!! Read Accepted Article.

  • Asutosh Patra has joined our group as a PhD student in August 2022. Welcome Asutosh!

  • Our work on "Carbene-Anchored Boryl- and Stibanyl-Phosphaalkenes as Precursors for Bis-Phosphaalkenyl Dichlorogermane and Mixed-Valence AgI /AgII Phosphinidenide" is now published in Inorganic chemistry Congratulations Ekta and Team!! Read Accepted Article.

  • Usharani Patra has joined our group as a Project Assistant in November 2022. Welcome Usha!

  • Kishore Shinde has joined our group as a PhD student in January 2023. Welcome Kishor!

  • Hearty congratulations to Ekta for winning Best Poster Award by Dalton Transaction at "International Conference on Main Group Synthesis and Catalysis 2023"

40
JOURNAL ARTICLES
STARS, MHRD-IISC
FUNDING
18
RECENT PUBLICATIONS
PhD
POSITION AVAILABLE

About Dr. Roy


Biography

Dr. Sudipta Roy was born in Kolkata, West Bengal. After her early education in Chemistry (B.Sc. in Chemistry (Hons.) from University of Calcutta) and Biochemistry (M.Sc. in Biochemistry from Bangalore University), she obtained her Ph.D. in Organic Chemistry as a DAAD Scholar from the Institut für Organische Chemie, Universität Regensburg, Germany (2012, Thesis Title: “Development of novel methodologies for the syntheses of biologically relevant nitrogen-heterocycles”). Afterwards, she moved to the Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany.

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Professional Details


  1. 2025

    Early Career Advisory Board Member of Inorganica Chimica Acta

  2. 2024

    Thieme Chemistry Journal Award, 2024

  3. 2023-current

    Associate Professor

    Associate Professor , Department of Chemistry, IISER Tirupati

  4. 2016-2023

    Assistant Professor

    Assistant Professor, Department of Chemistry, IISER Tirupati

  5. 2014 - 2015

    Postdoctoral Fellow

    Postdoctoral Fellow at the Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Germany with Prof. Dr. Herbert W. Roesky

  6. 2013 - 2014

    Postdoctoral Fellow

    "Postdoctoral Fellow at the Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany with Prof. Dr. Lutz Ackermann

  7. 2009 - 2012

    Ph.D in Organic Chemistry

    Supervisor: Prof. Dr. Oliver Reiser
    Institut für Organische Chemie, Universität Regensburg, Germany
    Thesis Title: Development of novel methodologies for the syntheses of biologically relevant nitrogen-heterocycles

  8. 2009

    Intensive German Language Course As a Part of DAAD PhD Fellowship

    German language courses as a DAAD Fellow at the Goethe-Institut, Mannheim, Germany

  9. 2009

    Intensive German Language Course as a Part of DAAD PhD Fellowship

    German language courses as a DAAD Fellow at the Goethe-Institut Maxmueller Bhavan, New Delhi

  10. 2007 - 2009

    Research Project

    Project work under supervision of Prof. Dr. S. Chandrasekaran Dept. of Organic Chemistry, Indian Institute of Science (IISc), Bangalore, India

  11. 2007

    Educational Qualifications

    M.Sc. in Biochemistry; Bangalore University, Bangalore, India

  12. 2005

    B.Sc. in Chemistry (Hons.); University of Calcutta, Calcutta, India

  13. 2009

    Academic Achievement

    PhD fellowship from DAAD (Deutscher Akademischer Austausch Dienst).

Independent Research


40. Isolation and Oxygen Activation of Electron-Rich CoII4O Metallic Clusters Having a 3-Fold Symmetry.
Maria Francis, Asutosh Patra, Farsana Abdul Salam, Liviu Ungur, Björn Schwarz* and Sudipta Roy.*

Chem. Commun. 2025, DOI: 10.1039/D4CC06550F.

https://doi.org/10.1039/D4CC06550F

[TOC]


[Back cover]


[Read]
 

39. Theoretical and Experimental Studies on Stability, Bonding and Isolation of Elusive Bis-(Dichloro-Aluminium) Oxides Supported by Donor-Base Ligands.
Maria Francis, Kishor Shinde and Sudipta Roy.*

RSC Adv. 2025, 15, 9208-9215

https://doi.org/10.1039/D5RA00211G

[TOC]


[Read]
 

38. Isolation of Mixed Valence Charge-Neutral Ag12, and Dicationic Ag10 Nano-Clusters Stabilized by Carbene-Phosphaalkenides .
Maria Francis, Asutosh Patra, Farsana Abdul Salam, Siriyara Jagannatha Prathap and Sudipta Roy .*

Chem. Commun. 2025, 61, 1379-1382

https://doi.org/10.1039/D4CC05628K


[Back cover]

[Read]
 

37. Mixed Silylene-Germylene 1,2-Di-Chlorides Stabilized by Donor-Base Ligands: Bonding Analyses and Reactivity Studies.
Maria Francis, Farasana A and Sudipta Roy.*

ACS Omega 2025, 10, 5, 4233–4247

https://doi.org/10.1021/acsomega.4c04196

[TOC]


[Read]
 

36. Coordination Chemistry of Bis-Cyclic Alkyl(Amino) Carbene (cAAC)-Supported Di-Phosphorus (P2): An Efficient Route to Donor Base-Stabilized Elusive Di-Phosphorus-Monoxide(P2O)-Gold Complex.
Maria Francis, Ekta Nag and Sudipta Roy.*

Chem. Asian J. 2023, 19, e202300882

https://doi.org/10.1002/asia.202300882

[TOC]


[Read]
 

35. Reactivity Studies of Cyclic Alkyl(Amino) Carbene (cAAC)- Supported Phosphinidenide with AuCl.
Ekta Nag, Maria Francis and Sudipta Roy.*

Eur. J. Inorg. Chem. 2023, 27, e202300485

https://doi.org/10.1002/ejic.202300485

[Selected as the Front Cover]

[Front Cover]

[TOC]

[Read]
 

34. Isolation of (Aryl)- (Imino) Phosphide, and (Phosphaalkene) Amide Complexes of Alkali Metals from Carbene-Phosphinidenes under Reductive-Thermal Rearrangements.
Ekta Nag, Maria Francis, Divya Putta and Sudipta Roy.*

Chem. Eur. J. 2023, 29, e202302120

https://doi.org/10.1002/chem.202302120

[Selected as the Cover Profile]

[Cover Profile]

[TOC]


[Read]
 

33. Monoanionic Phosphorus-Supported Air Stable Cu(I)8, Ag(I)7, and Ag(I)5 Nanoclusters Exhibiting TADF: A Novel Photocatalyst for Stereoselective Carbene Transfer Reactions.
Ekta Nag, Asutosh Patra, Maria Francis, Usharani Patra and Sudipta Roy.*

Adv. Optical Mater. 2023, 12, 2301256

https://doi.org/10.1002/adom.202301256

[Selected as the Inside Front Cover]

[Inside Front Cover]

[TOC]

[Read]
 

32. Stabilisation and reactivity studies of donor-base ligand-supported gallium-phosphides with stronger binding energy: a theoretical approach.
Maria Francis and Sudipta Roy.*

RSC Adv. 2023, 13, 7738-7751

https://doi.org/10.1039/D2RA06001A


[Read]
 

31. Isolation of Homo/Mixed Valence Ag12, Ag29, and Ag8 Clusters Stabilized by Cyclic Alkyl(amino) Carbene-Anchored Monoanionic Phosphorus Ligand.
Ekta Nag++, Sridhar Battuluri++, Kartik Chandra Mondal and Sudipta Roy.*

Chem. Eur. J. 2022, 28, e202202324

[++ Equal Contribution]
 Publication Date (Web): September 30, 2022

doi.org/10.1002/chem.202202324

[Cover Picture]

[TOC]


[Read]
 

30. Carbene-Anchored Boryl- and Stibanyl-Phosphaalkenes as Precursors for Bis-Phosphaalkenyl Dichlorogermane and Mixed-Valence AgI /AgII Phosphinidenide.
Ekta Nag, Sridhar Battuluri, Bhavya Bini Sinu and Sudipta Roy.*

Inorg. Chem. 2022, 61, 13007−13014

doi.org/10.1021/acs.inorgchem.2c01132

[TOC]


[Read]
 

29. Isolation of Elusive Phosphinidene-Chloroterylenes: The Heavier Cyanogen Chloride Analogues.
Ekta Nag, Maria Francis, Sridhar Battuluri, Bhavya Bini Sinu and Sudipta Roy.*

Chem. Eur. J. 2022, 28, e20220124

doi.org/10.1002/chem.202201242


[Read]
 

28. EDA-NOCV Analysis of Donor-Base-Stabilized Elusive Monomeric Aluminium Phosphides [(L)P-Al(Lʹ); L, Lʹ = cAACMe, NHCMe, PMe3].
Maria Francis and Sudipta Roy.*

ACS Omega 2022, 7, 5730–5738

Publication Date (Web): February 10, 2022

doi.org/10.1021/acsomega.1c05476


[Read]
 

27. Fluorescent organo-antimony compounds as precursors for syntheses of redox-active trimeric and dimeric alkali metal antimonides: an insight into electron transfer reduction processes.
Ekta Nag, Aditya Kulkarni, Sai Manoj N. V. T. Gorantla, Nico Graw, Maria Francis, Regine Herbst-Irmer, Dietmar Stalke*, Herbert W. Roesky*, Kartik Chandra Mondal* and Sudipta Roy.*

Dalton Trans. 2022, 51, 1791-1805

doi.org/10.1039/D1DT03398K

[Inside Cover Article]

[TOC]


[Read]
 

26. Synthesis, oligomerization and catalytic studies of a redox-active Ni4-cubane: a detailed mechanistic investigation.
Saroj Kumar Kushvaha[++], Maria Francis[++], Jayasree Kumar, Ekta Nag, Prathap Ravichandran, Sudipta Roy* and Kartik Chandra Mondal.*

RSC Adv. 2021, 11, 22849–22858

doi.org/10.1039/D1RA03071J

[++ Equal Contribution]

[Link]

[Read]
 

25. Bonding and Stability of Donor Ligand-Supported Heavier Analogues of Cyanogen Halides (L′)PSi(X)(L).
Sai Manoj N. V. T. Gorantla, Maria Francis, Sudipta Roy* and Kartik Chandra Mondal.*

RSC Advances 2021, 11, 6586–6603

DOI: 10.1039/d0ra10338a

[Link]

[Read]
 

24. Solid‐State Isolation of Cyclic Alkyl(Amino) Carbene (cAAC)‐Supported Structurally Diverse Alkali Metal‐Phosphinidenides.
Aditya Kulkarni, Selvakumar Arumugam, Maria Francis, Pulikanti Guruprasad Reddy, Ekta Nag, Sai Manoj N. V. T. Gorantla, Dr. Kartik Chandra Mondal* and Dr. Sudipta Roy.*

Chemistry - A European Journal, 2021, 27, 200-206

doi.org/10.1002/chem.202003505

[Frontispiece]

[TOC]


[Read]
 

23. Highly fluorescent aryl-cyclopentadienyl ligands and their tetra-nuclear mixed metallic potassium dysprosium clusters.
Selvakumar Arumugam, Pulikanti Guruprasad Reddy, Maria Francis, Aditya Kulkarni, Sudipta Roy* and Kartik Chandra Mondal.*

RSC Advances, 2020, 10, 39366-39372

First published 30 October 2020

DOI: 10.1039/d0ra05316c

[Link]

[Read]
 

22. Tridentate Nickel(II)-Catalyzed Chemodivergent C-H Functionalization and Cyclopropanation: Regioselective and Diastereoselective Access to Substituted Aromatic Heterocycles.
Ekta Nag, Sai Manoj N. V. T. Gorantla, Selvakumar Arumugam, Aditya Kulkarni, Kartik Chandra Mondal* and Sudipta Roy.*

Org. Lett., 2020, (22) 16, 6313-6318

[Link]

[Read]
 

21. Tuning Nuclearity of Dysprosium (III) Complexes by Controlling Substitution on Ligand Molecule.
Selvakumar Arumugam, Saroj Kumar Kushvaha, Bhaskaran Shankar, Sai Manoj N. V. T. Gorantla, Dr. Sudipta Roy, Biprojit Sana, Dr. Panchanana Khuntia and Dr. Kartik Chandra Mondal.

ChemistrySelect, 2020, 5, 9787-9792

[LinK]
 

20. Tetranuclear 3d/4f Coordination Complexes as Homogeneous Catalysts for Bis (indolyl) methane Syntheses.
N. V. T. Sai Manoj Gorantla, Pulikanti Guruprasad Reddy, Sayed Mohmmed Abdul Shakoor, Rajkumar Mandal, Sudipta Roy* and Kartik Chandra Mondal.

ChemistrySelect, 2019, 4, 7722-7727

[Link]
 

19. A Dicobalt Coordination Complex with a short Cobalt-Cobalt Distance.
Jayasree Kumar, N. V. T. Sai Manoj Gorantla, Sudipta Roy*, Alexander Noel Paesch, Regine Herbst-Irmer, Dietmar Stalke, Chakkittakandiyil Anusha, Susmita De, P. Parameswaran, H. W. Roesky and K. C. Mondal.

ChemistrySelect, 2018, 3 8221-8228

[Link]
 


List of Scientific Publications

Full List

18. Sudipta Roy, Kartik Chandra Mondal, Bin Li, Subrata Kundu, Christian J. Schürmann, Sayan Dutta, Debasis Koley, Dietmar Stalke, Regine Herbst-Irmer and Herbert W. Roesky. Two Structurally Characterized Conformational Isomers with Different C-P Bonds.

Chem. Eur. J. 2017, 23, 12153-12157.

[Link]


 

17. Sudipta Roy, Christian J. Schürmann, Totan Mondal, Debasis Koley, Regine Herbst-Irmer, Dietmar Stalke and Herbert W. Roesky. Activation of Elemental Sulfur at a Two-Coordinate Platinum(0) Center.

Chem. Eur. J.  2016, 36, 12629-12633.

[Link]


 

16. Sudipta Roy, Kartik Chandra Mondal and Herbert W. Roesky. Cyclic Alkyl(amino) Carbene Stabilized Low Coordinate Metal Complexes of Enduring Nature.

Acc. Chem. Res 2016, 49 357-369

[LinK]


 

15. Kartik Chandra Mondal, Sudipta Roy, Birger Dittrich, Diego M. Andrada, Gernot Frenking and Herbert W. Roesky. A Triatomic Silicon(0) Cluster Stabilized by a Cyclic Alkyl(amino) Carbene.

Angew. Chem. Int. Ed., 2016, 55 3158-3161

[VIP article]

[LinK]


 

14. Kartik Chandra Mondal, Sudipta Roy, Bholanath Maity, Debasis Koley and Herbert W. Roesky. Estimation of σ-Donation and π-Backdonation of Cyclic Alkyl(amino) carbene Containing Compounds.

Inorg. Chem., 2016, 55 163-169

[LinK]


 

13. Kartik Chandra Mondal, Sudipta Roy and Herbert W. Roesky. Silicon Based Radical, Radical ion and Diradical.

Chem. Soc. Rev., 2016, 45 1080-1111

DOI: 10.1039/C5CS00739A

[Highlighted in Atlas Science news]

[LinK]


 

12. Sudipta Roy, Kartik Chandra Mondal, Totan Mondal, Debasis Koley, Birger Dittrich and Herbert W. Roesky. Monomeric Siliconthiodichloride Trapped by a Lewis Base.

Dalton Trans., 2015, 44 19942-19947

[LinK]


 

11. Kartik Chandra Mondal, Sudipta Roy, Birger Dittrich, Bholanath Maity, Sayan Dutta, Debasis Koley, Suresh Kumar Vasa, Rasmus Linser, Sebastian Dechert and Herbert W. Roesky. A Soluble Molecular Variant of the Semiconducting Silicondiselenide.

Chem. Sc., 2015, 6 5230-5234

DOI: 10.1021/jacs.5b03407

[LinK]


 

10. Sudipta Roy, Birger Dittrich, Totan Mondal, Debasis Koley, A. Claudia Stückl, Brigitte Schwederski, Wolfgang Kaim, Michael John, Suresh Kumar Vasa, Rasmus Linser and Herbert W. Roesky. Carbene Supported Dimer of Heavier Ketenimine Analogue with P and Si Atoms.

J. Am. Chem. Soc., 2015, 137 6180-6183

DOI: 10.1039/C5CS00739A

[LinK]


 

9. Sudipta Roy, A. Claudia Stückl, Serhiy Demeshko, Birger Dittrich, Jann Meyer, Bholanath Maity, Debasis Koley, Brigitte Schwederski, Wolfgang Kaim and Herbert W. Roesky. Stable Radicals from Commonly Used Precursors Trichlorosilane and Diphenylchlorophosphine.

J. Am. Chem. Soc., 2015, 137 4670-4673

[Featured in JACS-Select]

[LinK]


 

8. Sudipta Roy, Peter Stollberg, Regine Herbst-Irmer, Dietmar Stalke, Diego M. Andrada, Gernot Frenking and Herbert W. Roesky. Carbene-Dichlorosilylene Stabilized Phosphinidenes Exhibiting Strong Intramolecular Charge Transfer Transition.

J. Am. Chem. Soc., 2015, 137 150-153

[Highlighted in Nachrichten aus der Chemie 2016, 64, 224]

[LinK]


 

7. Sudipta Roy, Kartik Chandra Mondal, Jann Meyer, Benedikt Niepötter, Christian Köhler, Regine Herbst-Irmer, Dietmar Stalke, Birger Dittrich, Diego M. Andrada, Gernot Frenking and Herbert W. Roesky. Syntheses, Characterization and Theoretical Investigation of Two Coordinate Palladium(0) and Platinum(0) Complexes Utilizing π-accepting Carbenes.

Chem. Eur. J. 2015, 21 9312-9318

DOI: 10.1002/chem.201500758.

[Hot paper, selected as inside cover]

[LinK]


Article first published online: 12 JUN 2015 DOI: 10.1002/chem.201590113

[LinK]
 

6. Sudipta Roy, Kartik Chandra Mondal, Lennard Krause, Peter Stollberg, Regine Herbst-Irmer, Dietmar Stalke, Jann Meyer, A. Claudia Stückl, Bholanath Maity, Debasis Koley, Suresh Kumar Vasa, Sheng Qi Xiang, Rasmus Linser and Herbert W. Roesky. Electron Mediated Conversion of Silylones to Six-membered Cyclic Silylenes.

J. Am. Chem. Soc., 2014, 136 16776-16779

[Featured in JACS Spotlights]

[LinK]


 

5. Kartik Chandra Mondal, Sudipta Roy, Susmita De, Pattiyil Parameswaran, Birger Dittrich, Serhiy Demeshko, Fabian Ehret, Wolfgang Kaim and Herbert W. Roesky. Stabilization of a Two Coordinate Mono-Atomic Cobalt(0).

Chem. Eur. J 2014, 20 11646-11649

[Selected for front cover]

[LinK]


 

4. Kartik Chandra Mondal, Prinson P. Samuel, Yan Li, Herbert W. Roesky, Sudipta Roy, Lutz Ackermann, Navdeep S. Sidhu, George M. Sheldrick, Elena Carl, Serhiy Demeshko, Susmita De, Pattiyil Parameswaran, Liviu Ungur, Liviu F. Chibotaru and Diego M. Andrada. A Catalyst with Two Coordinate Nickel: Theoretical and Catalytic Studies.

Eur. J. Inorg. Chem., 2014, 818-823

[LinK]


 

3. Shrutisagar Dattatraya Haveli, Sudipta Roy, Vibha Gautam, Ketan C. Parmar and Srinivasan Chandrasekaran. Ring Opening of Activated Cyclopropanes with NIS/NaN3: Synthesis of C-1 Linked Pseudodisaccharides..

Tetrahedron, 2013, 69 11138-11143

[Selected Paper in ChemInform; DOI: 10.1002/chin.201423064]

[LinK]


 

2. Sudipta Roy and Oliver Reiser. A Catalytic Multicomponent Approach for the Stereoselective Synthesis of Cis-4,5-Disubstituted Pyrrolidinones and Tetrahydro-3H-pyrrolo[3,2-c]quinolines.

Angew. Chem. Int. Ed., 2012, 51 4722-4725 ;Angewandte Chemie 2012124, 4801-4804

Selected Paper in ChemInform; DOI:10.1002/anie.201107831

[Highlighted in Synfacts; DOI: 10.1055/s-0032-1316525]

[LinK]


 

1. Shrutisagar Dattatraya Haveli, Sudipta Roy and Srinivasan Chandrasekaran. Synthesis of Unnatural C-2 Amino Acid Nucleosides Using NIS-Mediated Ring Opening of 1,2-Cyclopropane Carboxylated Sugar Derivatives.

Synlett., 2009, 451-455

[Selected Paper in ChemInform; DOI: 10.1002/chin.200927186]

[LinK]