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Empowering p electrons in catalysis...

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Organometallic-free Catalytic Cross-electrophilic Methylation of Aryl Halides

Swagata Sil, Athena Mandal,Balakumar Srinivasan, Paramita Datta, Partha Protim Dey, Pallabi Mandal, Sourav Banerjee, Swadhin K. Mandal

J. Am. Chem. Soc. 2026, in press

SO2-Mediated 2e-, 4e- and 6e- Reductions: Facile Access to Aryl Amines

Partha Protim Dey, Paramita Datta, Pallabi Mandal, Anex Jose, Swadhin K. Mandal

Angew. Chem. Int. Ed. 2026, in press

Mesoionic N-Heterocyclic Olefins, Imines, Thiones, Phosphinidenes and Their Application in Catalysis

Subir Maji, Sreejyothi P., Max M. Hansmann, Swadhin K. Mandal

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Angew. Chem. Int. Ed. 2026, 65, e20101

Valorization of CO2 and N2O Gas Enabled by a Single Multi-Photoinduced Electron Transfer Catalyst

Amit Biswas, Simon Kolb, Swagata Sil, Debashis Manna, Sebastian Röttger, Anex Jose, Daniel B. Werz, Swadhin K. Mandal

J. Am. Chem. Soc. 2025, 147, 46187−46196

Redox Umpolung of Phenalenyl-Based Molecule Inside Water-Soluble Nanocages

Debojyoti Roy, Paramita Datta, Swadhin K. Mandal, Jyotishman Dasgupta

J. Am. Chem. Soc. 2025, 147, 43453−43461

aNHC Stabilised Low-Valent Phosphorus Compound: Exploring Dual
Catalytic Activity via Nucleophilicity and P(I)/P(III) Redox Reactivity

Nimisha Gautam, Sreejyothi Prasanna, Kaushik Soni, Subhajit Chakraborty, Subir Maji, Kalishankar Bhattacharyya, Swadhin K. Mandal

J. Am. Chem. Soc. 2025, 147, 23001−23013

A BOIMPY Dye Enables Multi-Photoinduced Electron Transfer Catalysis: Reaching Super-Reducing Properties

Amit Biswas, Simon Kolb, Sebastian H. Röttger, Arpan Das, Lukas J. Patala, Partha P. Dey, Swagata Sil, Subir Maji, Soumi Chakrabarty, Oliver S. Wenger, Anup Bhunia, Daniel B. Werz and Swadhin K. Mandal

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Angew. Chem. Int. Ed. 2025, 64, e202416472

Independent LUMO Reactivity in Mesoionic N-Heterocyclic Thiones: Synthesis of a Stable Radical Anion

Subir Maji, Biplab Gope, Madhur Sharma, Arpan Das, Anex Jose, Amit Biswas, Kalishankar Bhattacharyya and Swadhin K. Mandal

Angew. Chem. Int. Ed. 2025, 64, e202418673

Photoexcited Manganese Complex of Abnormal N-Heterocyclic Carbene in Molecular Hydrogen Activation via Hydrogen Atom Transfer Pathway

Rohan Sharma, Sreejyothi Prasanna, Pralhad Shenoy, Nimisha Gautam, Biplab Gope, Subir Maji, Swapan Pati, Swadhin K. Mandal

ACS Catal. 2025, 15, 19872−19882

Quantum Chemical Insights of Mesoionic N-Heterocyclic Olefin Catalyzed S-Formylation of Thiols using CO2

Pallabi Mandal, Ratan Logdi, Subir Maji, Swadhin K. Mandal, Ashwani Tiwari

ACS Catal. 2025, 15, 18688−18699

Organophotocatalytic Redox-Neutral Strategy for Late-Stage Drug Functionalization with SO2 Gas

Paramita Datta, Subir Maji, Prativa Biswas, Divya Jain, Partha Protim Dey and Swadhin K. Mandal

Chem. Sci. 2025, 16, 5064–5075

Coordination Chemistry of Phosphinidene Stabilized by Mesoionic N heterocyclic Carbene and Catalysis

Biplab Gope, Nimisha Gautam, Satadru Dutta, Subir Maji, Swadhin K. Mandal

Chem. Eur. J. 2025, 0, e02402

Metal-Free Catalytic N-Methylation of NH-Sulfoximines Using CO2

Subir Maji, Mandira Saha, Satyaki Sinha, Priyankar Majumder, Swadhin K Mandal

Org. Lett. 2025, 27, 4146−4151

Metal-Free Organocatalytic S-Formylation of Thiols using CO2

Subir Maji, Arpan Das, Madhur Mahesh Bhatt, and Swadhin K. Mandal

Nat. Cat. 2024, 7, 375-385

Transition Metal-Mimicking Relay Catalysis by a Low-Valent Phosphorus Compound

Sreejyothi P, Nimisha Gautam, Subir Maji, Kalishankar Bhattacharyya and Swadhin K. Mandal

J. Am. Chem. Soc. 2024, 146, 16743−16752

Uncovering the On-pathway Reaction Intermediates for Metal-Free Atom Transfer Radical Addition to Olefins through Photogenerated Phenalenyl Radical Anion

Paramita Datta, Debojyoti Roy, Divya Jain, Shiv Kumar, Swagata Sil, Anup Bhunia, Jyotishman Dasgupta and Swadhin K. Mandal

ACS Catal. 2024, 14, 3420-3433

Cross-coupling between Aryl Halides and Aryl Alkynes Catalyzed by an Odd Alternant Hydrocarbon

Swagata Sil, Krishnapriya Anattil Unnikrishnan, Pallabi Mandal, Rositha Kuniyil and Swadhin K. Mandal

Chem. Eur. J. 2024, e202400895

Highly Stable Self-Regenerating Organic Multi-Redox Systems derived from Bicyclic (Alkyl)(amino)carbenes (BICAACs)

Arpan Das, Sukanta Saha, Subir Maji, Pallavi Sarkar, Anex Jose, Madhur Mahesh Bhatt, Anup Bhunia, Arnab Dutta, Swapan K. Pati and Swadhin K. Mandal

Chem. Eur. J. 2024, e202303411

Denitrogenation of Tosylhydrazones: Synthesis of Aryl Alkyl Sulfones Catalyzed by Phenalenyl Based Molecule

Shiv Kumar, Parmita Datta, Anup Bhunia and Swadhin K. Mandal

Catal. Sci. Technol. 2024, 14, 174-182

Mechanochemical Solid State Single Electron Transfer from Reduced Organic Hydrocarbon for Catalytic Aryl-halide Bond Activation

Amit Biswas, Anup Bhunia and Swadhin K. Mandal

Chem. Sci. 2023, 14, 2606-2615

Bicyclic (alkyl)(amino)carbene (BICAAC) in Dual Role: Activation of Primary Amides and CO2 towards Catalytic N-Methylation

Nimisha Gautam, Ratan Logdi, Sreejyothi P, Antara Roy, Ashwani K. Tiwari and Swadhin K.Mandal

Chem. Sci. 2023, 14, 5079-5086

Metal-Ligand Cooperativity in Mn(I)-Catalyzed N-Formylation of Secondary Amides and Lactams using CO2 at Room Temperature

Soumi Chakraborty, Rounak Nath, Anuj Kumar Ray, Ankan Paul and Swadhin K. Mandal

Chem. Eur. J. 2023, 29, e202202710(6 of 9)

C-Alkylation by Phenalenyl-based Molecule via Borrowing Hydrogen Pathway

Ananya Banik, Paramita Datta and Swadhin K. Mandal

Org. Lett. 2023, 25, 8, 1305–1309

Mesoionic N-Heterocyclic Imines as Super Nucleophiles in Catalytic Coupling of Amides by CO2

Arpan Das, Pallavi Sarkar, Subir Maji, Swapan K. Pati and Swadhin K. Mandal

Angew. Chem. Int. Ed. 2022, 61, e202213614

Reduced Phenalenyl Based Molecule as a Super Electron Donor for Radical Mediated C-N Coupling Catalysis at Room Temperature

Swagata Sil, Athul Santha Bhaskaran, Soumi Chakraborty, Bhagat Singha, Rositha Kuniyil and Swadhin K. Mandal

J. Am. Chem. Soc. 2022, 144, 49, 22611–22621

Benzimidazolylidene Stabilized Borenium Ion for Catalytic Hydrogenation of N-heterocycles

Subir Maji, Pallavi Sarkar, Arpan Das, Swapan K. Pati and Swadhin K. Mandal

Inorg. Chem. 2022, 61, 36, 14282–14287

Regioselective ring-opening of epoxides towards Markovnikov alcohols: A metal-free catalytic approach using abnormal N-heterocyclic carbene

Sreejyothi P, Pallavi Sarkar, Supriti Dutta, Arpan Das, Swapan K Pati and Swadhin K Mandal

Chem. Commun. 2022, 58, 9540-9543

Phenalenyl Radical: Smallest Polycyclic Odd Alternant Hydrocarbon Present in the Graphene Sheet

Jasimuddin Ahmed and Swadhin K. Mandal

Chem. Rev. 2022, 122, 13, 11369–11431

Tuning Redox States of Phenalenyl Based Molecule by Consecutive Reduction towards Transition Metal-Free Heck type C-C Cross-Coupling

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Ananya Banik and Swadhin K. Mandal

ACS Catal. 2022, 12, 5000–5012

Bicyclic (alkyl)(amino)carbene (BICAAC) as a metal-free catalyst for reduction of nitriles to amines

Nimisha Gautam, Ratan Logdi, Sreejyothi P, N. M. Rajendran, Ashwani K. Tiwari and Swadhin K. Mandal

Chem. Commun. 2022, 58, 3047–3050

Redox-active Ligand Based Mn(I)-Catalyst for Hydrosilylative Ester Reduction

Soumi Chakraborty, Arpan Das and Swadhin K. Mandal

Chem. Commun. 2021, 57, 12671-12674

Mesoionic N-heterocyclic Olefin Catalysed Reductive Functionalization of CO2 for Consecutive N-Methylation of Amines

Subir Maji, Arpan Das and Swadhin K. Mandal

Chem. Sci. 2021, 12, 12174-12180

An NHC-stabilized Phosphinidene for Catalytic Formylation: A DFT Guided Approach

Sreejyothi P., Kalishankar Bhattacharyya, Shiv Kumar, Pradip Kumar Hota, Ayan Datta and Swadhin K. Mandal

Chem. Eur. J. 2021, 27, 11656 –11662

Mimicking Transition Metals in Borrowing Hydrogen from Alcohol

Ananya Banik, Jasimuddin Ahmed, Swagata Sil and Swadhin K. Mandal

Chem. Sci. 2021, 12, 8353-8361

Bicyclic (alkyl)(amino)carbene stabilized zinc(0) complex with singlet biradicaloid ground state

N. M. Rajendran, Nimisha Gautam, Pallavi Sarkar, Jasimuddin Ahmed, Arpan Das, Shubhajit Das, Swapan K. Pati, Swadhin K. Mandal

Chem. Commun. 2021, 57, 5282-5285

Switching between mono- and doubly-reduced odd alternant hydrocarbon: Designing redox catalyst

Jasimuddin Ahmed, Paramita Datta, Arpan Das, Stephy Jomy and Swadhin K. Mandal

Chem. Sci. 2021,12, 3039-3049

A Bottleable Imidazole-Based Radical as a Single Electron Transfer Reagent

Arpan Das, Jasimuddin Ahmed, N. M. Rajendran, Debashis Adhikari, and Swadhin K. Mandal

J. Org. Chem. 2021, 86, 1246–1252

Transition Metal-Free Catalytic Reduction of Primary Amides Using an Abnormal NHC based Potassium Complex: Integrating Nucleophilicity with Lewis Acidic Activation

Mrinal Bhunia, Sumeet Ranjan Sahoo, Arpan Das, Jasimuddin Ahmed, Sreejyothi P. and Swadhin K. Mandal

Chem. Sci. 2020, 11, 1848-1854

From CO2 Activation to Catalytic Reduction: A Metal-free Approach

Sreejyothi P and Swadhin K Mandal

Chem. Sci. 2020, 11, 10571-10593

Stable Abnormal N-Heterocyclic Carbenes and their Applications in Catalysis

Samaresh Chandra Sau, Pradip Kumar Hota, Swadhin K. Mandal, Michele Soleilhavoup and Guy Bertrand

Chem. Soc. Rev. 2020, 49, 1233-1252

Designing Cr-catalyst Bearing a Redox Non-innocent Phenalenyl-Based Ligand towards Hydrosilylative CO2 Functionalization

Soumi Chakraborty, Arpan Das, Jasimuddin Ahmed, Sayani Barman and Swadhin K. Mandal

Chem. Commun. 2020, 56, 13788-13791

NHC-catalyzed Silylative Dehydration of Primary Amides to Nitriles at Room Temperature

Pradip Kumar Hota, Subir Maji, Jasimuddin Ahmed, N. M. Rajendran and Swadhin K. Mandal

Chem. Commun. 2020, 56, 575-578

Earth-abundant metal catalyzed hydrosilylative reduction of various functional groups

Mrinal Bhunia, Sreejyothi P., Swadhin K. Mandal

Coord. Chem. Rev. 2020, 405, 213110

Dedicated to Prof. G. K. Lahiri on the occasion of his 60th birthday

Computationally designed antibody–drug conjugates self-assembled via affinity ligands

Nimish Gupta, Aasif Ansari, Gaurao V. Dhoke, Maheshwerreddy Chilamari, Jwala Sivaccumar, Smita Kumari, Snigdha Chatterjee, Ravinder Goyal, Pradip Kumar Dutta, Mallik Samarla, Madhumita Mukherjee, Arindam Sarkar, Swadhin K. Mandal, Vishal Rai, Goutam Biswas, Aniruddha Sengupta, Sudip Roy, Monideepa Roy & Shiladitya Sengupta

Nature Biomed. Eng. 2019, 3, 917–929

Covered by Nature Biomed. Eng. as News and Views

Storing redox equivalent in the phenalenyl backbone towards catalytic multi-electron reduction

Mrinal Bhunia, Sumeet Ranjan Sahoo, Bikash Kumar Shaw, Shefali Vaidya, Anand Pariyar, Gonela Vijaykumar, Debashis Adhikari and Swadhin K. Mandal

Chem. Sci. 2019, 10, 7433-7441

Transforming Atmospheric CO2 into Alternative Fuels: a Metal-Free Approach under Ambient Conditions

Samaresh Chandra Sau, Rameswar Bhattacharjee, Pradip Kumar Hota, Pavan K. Vardhanapu, Gonela Vijaykumar, R. Govindarajan, Ayan Datta, Swadhin K. Mandal

Chem. Sci. 2019, 10, 1879-1884.

A K-Arylacetylide Complex for Catalytic Terminal Alkyne Functionalization using KOtBu as a Precatalyst

Jasimuddin Ahmed, Asim Kumar Swain, R. Govindarajan, Mrinal Bhunia and Swadhin K. Mandal

Chem. Commun. 2019, 55, 13860-13863

Primary Amides to Amines or Nitriles: Dual Role by a Single Catalyst

Hari S. Das, Shyamal Das, Kartick Dey, Bhagat Singh, Rahul K. Haridasan, Arpan Das, Jasimuddin Ahmed and Swadhin K. Mandal

Chem. Commun. 2019, 55, 11868-11871

Catalytic Reduction of Nitriles by Polymethylhydrosiloxane Using a Phenalenyl Based Iron (III) Complex

Shyamal Das, Hari Das, Bhagat Singh, Rahul Haridasan, Arpan Das, Swadhin K. Mandal

Inorg. Chem. 2019, 581, 711274-11278

Integrating Organic Lewis Acid and Redox Catalysis: The Phenalenyl Cation in Dual Role

Jasimuddin Ahmed, Soumi Chakraborty, Anex Jose, Sreejyothi P and Swadhin K. Mandal

J. Am. Chem. Soc. 2018, 140, 8330-8339

Tuning Redox Non-innocence of Phenalenyl Ligand toward Efficient Base-Metal Assisted Catalytic Hydrosilylation

Gonela Vijaykumar, Anand Pariyar, Jasimuddin Ahmed, Debashis Adhikari and Swadhin K Mandal

Chemical Science, 2018, 9, 2817-2825

Metal-Free Catalytic Formylation of Amides Using CO2 under Ambient Conditions

Pradip K. Hota; Samaresh C. Sau; Swadhin K Mandal

ACS Catal. 2018, 8, 11999-12003

Metal-Free Catalytic Formylation of Amides Using CO2 under Ambient Conditions

Bhagat Singh; Rupankar Paira; Goutam Biswas; Bikash K. Shaw; Swadhin K Mandal

Chem. Commun. 2018, 54, 13220-13223

Iron Based Long-Lived Catalyst for Direct C-H Arylation of Arenes and Heteroarenes

Soumi Chakraborty, Jasimuddin Ahmed, Bikash Kumar Shaw,
Anex Jose, and Swadhin K Mandal.

Chem. Eur. J. 2018, 24, 1–6

Highly Active Carbene Potassium Complexes for the Ring-Opening Polymerization of Cyclic Esters

Mrinal Bhunia, Gonela Vijaykumar, Debashis Adhikari, and Swadhin K Mandal

Inorg. Chem. 2017, 56, 14459-14466

New Face of Phenalenyl Based Radical in Transition Metal Free C-H Arylation of Heteroarenes at Room Temperature: Trapping the Radical Initiator via C-C σ Bond Formation

Jasimuddin Ahmed, Sreejyothi P, Gonela Vijaykumar, Anex Jose, Manthan Raj and Swadhin K Mandal

Chem. Sci., 2017, 8, 7798-7806

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Exploring Closed-Shell Cationic Phenalenyl: From Catalysis to Spin Electronics

Arup Mukherjee, Samresh Chandra Sau and Swadhin K Mandal

Acc. Chem. Res. 2017, 50, 1679-1691

Development of an antibody-drug conjugate platform using platinum as a linker

Nimish Gupta, Jhony Kancharla, Shelly Kaushik, Aasif Ansari, Samad Hossain, Ravindar Goyal,Manoj Pandey, Jowala Sivaccumar, Sajid Hussain, Arindam Sarkar, Aniridhha Sengupta, Swadhin K Mandal, Monideepa Roy, Shiladitya Sengupta

Chem. Sci. 2017, 8, 2387-2395

Metal Free Reduction of CO2 to Methoxyborane Under Ambient Conditions through Borondiformate Formation

Samaresh Ch. Sau, Rameswar Bhattacharjee, Pavan K. Vardhanapu, Gonela Vijaykumar, Ayan Datta, and Swadhin K Mandal

Angew. Chem. Int. Ed. 2016, 55, 15147 –15151

Switching Closed-Shell to Open-Shell Phenalenyl: Toward Designing Electroactive Materials

Anand Pariyar, Gonela Vijaykumar, Suman K. Dey, Santosh Kumar Singh, Sreekumar Kurungot, and Swadhin K Mandal

J. Am. Chem. Soc. 2015, 137, 5955-5960

Phenalenyl in Different Role: Catalytic Activation through the Nonbonding Molecular Orbital

Sudipta Raha Roy, A. Nijamudheen, Anand Pariyar, Anup Ghosh, Pavan K. Vardhanapu, Prasun K. Mandal, Ayan Datta, and Swadhin K. Mandal

ACS Catal. 2014, 4, 4307-4319

Palladium Nanoparticles on Graphite Oxide: Highly Recyclable Catalyst for the Synthesis Biaryl Cores

Subhankar Santra, Pradip Kumar Hota, Rangeet Bhattacharyya, Parthasarathi Bera, Prasenjit Ghosh, and Swadhin K Mandal

ACS Catal. 2013, 3, 2776-2789

Interface-engineered templates for molecular spin memory devices

Karthik V. Raman, Alexander M. Kamerbeek, Nicolae Atodiresei, Arup Mukherjee, Tamal K. Sen, Predrag Lazić, Vasile Caciuc, Reent Michel, Dietmar Stalke, Swadhin K. Mandal, Stefan Blügel, Markus Münzenberg, Jagadeesh S. Moodera

Nature 2013, 493, 509–513

Phenalenyl Based Organozinc Catalysts for Intramolecular Hydroamination Reactions: A Combined Catalytic, Kinetics and Mechanistic Investigation on the Catalytic Cycle

Arup Mukherjee, Tamal K. Sen, Pradip Kr. Ghorai, Prinson P. Samuel, Carola Schulzke, and Swadhin K. Mandal

Chem. Eur. J. 2012, 18, 10530-10545

Phenalenyl Based Molecules: Tuning the Lowest Unoccupied Molecular Orbital to Design Catalyst

Tamal Kumar Sen, Arup Mukherjee, Arghya Modak, Pradip Kr. Ghorai, Daniel Kratzert, Markus Granitzka, Dietmar Stalke, and Swadhin K. Mandal

Chem. Eur. J. 2011, 18, 54-58

Abnormal N-Heterocyclic Carbene Palladium Complex: Living Catalyst for Activation of Aryl Chlorides in Suzuki–Miyaura Cross Coupling

Samaresh Ch. Sau, Subhankar Santra, Tamal K. Sen, Swadhin K. Mandal and Debasish Koley

Chem. Commun. 2012, 48, 555-557

Introduction of Abnormal N-Heterocyclic Carbene as an Efficient Organocatalyst: Ring Opening Polymerization of Cyclic Esters

Tamal Kumar Sen; Samaresh Ch. Sau; Arup Mukherjee; Arghya Modak, Swadhin K. Mandal and Debasish Koley

Chem. Commun. 2011, 47, 11972-11974

Assembling Zirconium and Calcium Moieties through an Oxygen Center for Intramolecular Hydroamination Reaction: A Single System for Double Activation

Arup Mukherjee, Sharanappa Nembenna, Tamal Kumar Sen, S. P. Sarish, Pradip K Ghorai, Ott, H., Dietmar Stalke, Swadhin K Mandal and Herbert W. Roesky

Angew. Chem. Int. Ed. 2011, 50, 3968 –3972

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