Birinchi Kumar Das

Birinchi Kumar Das

Professor

MSc (Gauhati) PhD (IISc)

Coordination Chemistry, Inorganic Synthesis, Catalysis

Department of Chemistry
Gauhati University, Guwahati, 781014
Email:- bkdas@gauhati.ac.in

  • General Inorganic Chemistry
  • Solid State Chemistry
  • Symmetry and Group Theory in Chemistry
  • X-ray Crystallography
  • Green Chemistry

We are interested in the broad field of inorganic synthesis - synthesis of new compounds and their detailed characterization. Synthesis of coordination compounds of various nuclearities constitutes a main theme of our work. In doing so, we commonly make use of carboxylate anions as ligands because they can coordinate in a variety of coordination modes. Nitrogen-base ligands are frequently used by us to facilitate the formation of new compounds, possibly with unique structure and properties. In some cases, we try to utilize metal complexes - both new and known - as precursors to form metal that are useful in so may different ways.

Primarily, we try to make use of the compounds synthesized by us in the field of catalysis. It has been possible to prepare a number of tetranuclear metal complexes of cobalt(III) having the general formula Co4O4(O2CR)4L4 where R is an alkyl or aryl group and L is usually a pyridyl ligand. A general method for the preparation of these robust complexes has been developed.

These cobalt(III) species act as efficient catalysts for the oxidation of a variety of organic compounds including alkylaromatic hydrocarbons, alcohols and alkenes with air and or TBHP as the oxidants. In addition, the cobalt(III)-oxo complexes are able to catalyze the oxidation of water in presence of a photosensitizer.

Another area of interest has been the synthesis of new and known metal complexes that are suitable for use as precursors for the synthesis of nanostructured metal oxides.

Use of the single crystal X-ray diffraction method as a definitive identification of mono-, oligo- and poly-nuclear metal complexes has been a primary theme of work in the group.

 PhD Students

  1. Monsumi Gogoi (PhD thesis submitted, viva voce examination awaited)
  2. Palash Bharali (Thesis pre-submission formalities completed)
  3. Prity Kangkan Kouli (Final Registration completed)
  4. Nirupamjit Sarmah (Final Registration completed)
  5. Anup Malakar (Supervised jointly with Dr. M. Chakrabortty of Assam Engineering College, Guwahati)
  6. Naba Jyoti Kalita (Supervised jointly with Dr. M. Chakrabortty of Assam Engineering College, Guwahati)
  7. Purnima Baruah

Another researcher, Anamika Talukdar also works in the group as part of the ongoing collaboration with Dr. M. Chakrabortty of Assam Engineering College, Guwahati. She is registered as a PhD student of Gauhati University.

Two 4th Sem MSc Students - Sukanya Das and Dimpal Pathak are currently doing their project dissertation work.

 

 

 

  • Fulbright Senior Research Fellowship, Year: 2011-2012, held at Georgia Institute of Technology, Atlanta,USA for 8 months
  • Commonwealth Postdoctoral Fellowship, Year: 1999, held at University of York, UK for 1 year
  • Academic Affililiate position to work at the Center for Fundamental Materials Research, Michigan State University, USA for a period of 12 weeks starting April 2001
  • Postdoctoral Fellowship to work with Mercouri G. Kanatzidis of Michigan State University, East Lansing, USA for 2 years during 1993-1995
  • Dr J C Ghosh Gold Medal, Year: 1992, awarded by Indian Institute of Science, Bangalore as the Best Thesis Award for the year
  • Senior Research Fellowship, CSIR held during 1989-1991 at IISc Bangalore as a PhD student
  • Junior Research Fellowship (UGC-NET) held during 1986-1989 at IISc Bangalore as a PhD student
  • 6th Rank in Pre-University (Science) Examination of Gauhati University in 1979

 

Representative Research Publications

Year

Title

Name of journal

volume & pages

2017

Controlled synthesis of a- and g-Fe2O3 nanoparticles via thermolysis of PVA gels and studies on a-Fe2O3 catalyzed styrene epoxidation

R. A. Bepari, P. Bharali, B. K. Das Journal of Saudi Chemical Society 21, S170-S178

2017

Photocatalytic Degradation of Organic Dyes by Nanostructured Cobalt Oxides under UV-light

M. Gogoi, B. K. Das Journal of Chemistry and Chemical Sciences 7, 565-574

2013

Investigation of the fate of poplar lignin during autohydrolysis pretreatment to understand the biomass recalcitrance

R. Samuel, S. Cao, B. K. Das, F. Hu, Y. Pu, A. J. Ragauskas RSC Advances 3, 5305-5309

2012

Solid and solution structures and DNA binding properties of [MII(4-CNpy)2(SO4) (H2O)3].H2O for M = Cu, Co, Ni

M. K. Bhattacharyya, P. G. Devi, D. Dasgupta, S. J. Bora, B. K. Das Polyhedron 35, 62-68

2012

Synthesis and properties of a few 1-D cobaltous fumarates

S. J. Bora, B. K. Das Journal of Solid State Chemistry 192, 93-101

2011

Novel C-H∙∙∙C contacts involving 3,5-dimethylpyrazole ligands in a tetracoordinate Co(II) complex

 

S. Chakravorty, J. A. Platts, B. K. Das Dalton Transactions

40, 11605-11612

2010

Novel dicopper(II)-tetracarboxylates as catalysts for selective oxidation of benzyl alcohols with aqueous TBHP

P. Sarmah, B. K. Das, P. Phukan Catalysis Communications 11, 932-935

2009

Catalytic properties of Co(III)-oxo cubanes in the TBHP-oxidation of benzylic alcohols

R. Chakrabarty, P. Sarmah, B. Saha, S. Chakravorty, B. K. Das Inorganic Chemistry 48, 6371-6378

2009

Inverse bilayer structure of mononuclear Co(II) and Ni(II) complexes of type M(H2O)3(SO4)(4-CNpy)2

B. K. Das, S. J. Bora, M. K. Bhattacharyya, R. K. Barman Acta Crystallographica: B65, 465-473

2007

Synthesis, structure, spectral and electrochemical properties, and catalytic use of cobalt(III)-oxo cubane clusters

R. Chakrabarty, S. J. Bora, B. K. Das Inorganic Chemistry 46, 9450-9462

2007

Epoxidation of a-pinene catalysed by Co(III) complex immobilised on chemically modified silica

R. Chakrabarty, B. K. Das, J. H. Clark Green Chemistry 9, 845-848

2007

Selective oxidation of alcohols catalysed by a cubane-like Co(III) oxo cluster immobilised on hexagonal mesoporous silica

P. Sarmah, R. Chakrabarty, P. Phukan, B. K. Das Journal of Molecular Catalysis, A: Chemical 268, 36-44

2006

Structural, thermal and spectroscopic properties of supramolecular coordination solids

B. K. Das, S. J. Bora, M. Chakrabortty, L. Kalita, R. Chakrabarty, R. K. Barman Journal of Chemical Sciences 118, 487-494

2002

Novel supramolecular aggregation in [Ni(H2O)4(4-CNpy)2](BPh4)2.2(4-CNpy).4H2O

R. K. Barman, B. K. Das CrystEngComm 4, 80-83

2000

A novel immobilised cobalt (III) oxidation catalyst

Authors: B. K. Das, J. H. Clark JCS: Chemical Communications 605-606

1999

Superheated Solvent Media for Organometallic Cluster Synthesis

M. G. Kanatzidis, B. K. Das Comments on Inorganic Chemistry 21, 29-54

1995

New Mixed-Metal Carbonyl Tellurido Clusters from Solvothermal Synthesis

B. K. Das, M. G. Kanatzidis Inorganic Chemistry 34, 5721-5727

1995

Formation of Thioarsenide from Reductive Coupling of Dithionite and Arsenite under Hydrothermal Conditions. Synthesis of (Ph4P)[Fe2(AsS)(CO)6]

B. K. Das, M. G. Kanatzidis Inorganic Chemistry 34, 6505-6511

1990

Diruthenium(III) Compounds, Ru2O(O2CAr)2(Me-CN)4(PPh3)2(ClO4)2.H2O and Ru2O(O2CAr)4(PPh3)2, with an {Ru2(m-O)(-O2CAr)22+} Core as Model Systems for the Diiron Centers in Hemerythrin

B. K. Das, A. R. Chakravarty Inorganic Chemistry 29, 2078-2083

1991

Reactivity of PPh3 towards Ru2Cl(m-O2CAr)4: Synthesis, Molecular Structures, Spectroscopic and Electrochemical Properties of Ru2II,III(OH2)Cl(MeCN)-(O2CAr)4(PPh3)2 and Ru2II,II(OH2)(MeCN)2(O2CAr)4(PPh3)2

B. K. Das, A. R. Chakravarty Inorganic Chemistry 30, 4978-4986

Other Representative Publications

2016

B. K. Das, P. Kalita and M. Chakrabortty, ‘Integrated Biorefinery for Food, Feed and Platform Chemicals’ in Platform Chemical Biorefinery: Future Green Chemistry (ISBN: 978-0-12-802980-0)’, Eds. S. K. Brar, S. J. Sarma, K. Pakshirajan, Elsevier, pp. 393-416.

2008

B.K. Das, R. Chakrabarty and P. Sarmah, ‘Cobalt(III)-supported chemically modified mesoporous silicas as heterogeneous oxidation catalysts in Heterogeneous Catalysis Research Progress (ISBN: 978-1-60456-979-7), M.B. Gunther (Ed.), Nova Publishers, New York, pp. 111-143.

2011

B. K. Das, ‘Quality of Higher Education: Role of Infrastructure’, in Higher Education, Vol. II (ISBN: 978-81-920547-4-2), Eds. G. Choudhury, S.K. Choudhury, J. Dutta, APPOCCUS (Guwahati), pp. 49-63.

2001

B. K. Das, ‘Green Chemistry: An Approach to Clean Chemistry’, Prajna (The journal of Gauhati University Teachers’ Association), 10, 36-40.

2005

B. K. Das ‘X-ray Crystallography: A Hardcore but Useful Science’, The Assam Tribune (Guwahati), February 5.

 

 

 

 

 

 

 

 

 

 

 

Postal Address

Dr. Birinchi K Das
Department of Chemistry
Gauhati University
Guwahati 781014, India

 

Phone Number

+91 98640 54739

 

E-mail addresses

bkdas@gauhati.ac.in

Birinchi.Das@gmail.com

Birinchi K. Das

Professor of Chemistry

Personal e-mail: Birinchi.Das@gmail.com

Mobile Phone Number: +91 98640 54739

Birinchi Das joined Gauhati University as a Lecturer in 1991 and was promoted to a Reader position in 1998. He became a Professor in November 2006 and served as the Head of the Department of Chemistry, Gauhati University during 2014-2017. His research interests span the areas of Inorganic synthesis, crystal structure analysis, metal-catalyzed oxidation and environmental chemistry.

Education

High School Leaving Certificate Examination, Boards of Seconday Education Assam (1977) FIRST DIVISION

Pre-University Examination, Gauhati University (1979) FIRST DIVISION

B.Sc. with Honours in Chemistry from Cotton College (Guwahati), Gauhati University (1983)* FIRST CLASS

M.Sc. in Chemistry with specialization in Inorganic Chemistry, Gauhati University (1986)* FIRST CLASS

Ph.D. in Chemistry. Thesis title: STUDIES ON THE REACTIVITY OF TRIPHENYLPHOSPHINE TOWARDS DIRUTHENIUM(II, III) TETRACARBOXYLATES. Supervisor: Prof. Ahil Ranjan Chakravarty, Indian Institute of Science Bangalore (1992)

Short-term Research on High -Tc Superconductors as a Visiting Fellow in the laboratory of Bharat Ratna Prof. C.N.R. Rao (1992)

Postdoctoral Research on metal chalcogenides with Prof. Mercouri G. Kanatzidis of Michigan State University, East Lansing, USA (1993-1995)

Commonwealth Fellowship in the area of Green Chemistry with Prof. James H. Clark of the University of York, UK (1999)

Fulbright Fellowship to work on biomass utilization with Prof. Arthur J. Ragauskas of Georgia Institute of Technology, Atlanta, USA (2011-2012)

*Study periods affected by political disturbances.