From IITK
48. " Amphoteric reactivity of a putative Cu(II)-mCPBA Intermediate" Rakesh Kumar, Anweshika Maji, Bhargab Biiswas and Apparao Draksharapu*., Dalton Trans., 2024 (Just accepted). https://doi.org/10.1039/D3DT03747A
47. " Pivotal Role of Salicylates in tuning the formation and reactivity of Mn(V)=O's" Pragya Arora, Sai Kumari Vechalapu, Santhosh Duraisamy, Dharmaraja Allimuthu* and Apparao Draksharapu*. Eur. J. Inorg. Chem., 2024 (Just accepted). https://doi.org/10.1002/ejic.202400079
46. '' Formation of a Reactive [Mn(III)-O-Ce(IV)] species and its facile equilibrium with Related Mn(IV)(OX) (X = Sc or H) complexes'' Sikha Gupta, Pragya Arora, Rakesh Kumar, Ayushi Awasthi, Bittu Chandra, Raju Eerlapally, Jin Xiong, Yisong Guo*, Lawerence Jr. Que*, Apparao Draksharapu*., Angew. Chemie Int., Ed. 2023, e202316378. (Just accepted).
45. "Altering the Localization of an Unpaired Spin in a Formal Ni(V) Species" Ayushi Awasthi, Sharath Mallojjala, Rakesh Kumar, Raju Eerlapally, Jennifer S. Hirschi*, Apparao Draksharapu*., Chem. Eur. J ., 2023 (Just accepted).
44. "Generation of Ru(III)-hypochlorite with resemblance to heme dependent haloperoxidase enzyme" Rakesh Kumar, Faiza Ahsan, Ayushi Awasthi, Marcel Swart*, Apparao Draksharapu*., Dalton Trans., 2023 (Just accepted). https://doi.org/10.1039/D3DT02028B
43. "Mn(II) Polypyridyl Complexes: Precursors to High Valent Mn(V)=O Species and Inhibitors of Cancer Cell Proliferation" Pragya Arora, Sikha Gupta, Sai Kumari Vechalapu, Rakesh Kumar, Ayushi Awasthi, Sathyapriya Senthil, Shweta Khanna, Dharmaraja Allimuthu* and Apparao Draksharapu*., Chem. Eur. J ., 2023 (Just accepted). https://doi.org/10.1002/chem.202301506
42. "Spectroscopic characterization and reactivity of a high valent (L)Cu(III) species supported by a proline-based pseudo peptide" Raju Eerlapally, Sikha Gupta, Ayushi Awasthi, Rakesh Kumar, and Apparao Draksharapu. Dalton Trans., 2023, 52, 8645. https://doi.org/10.1039/D3DT00697B
41. "Formation A tertanuclear Mn-diamond core complex as a functional mimic of both catechol oxidase and phenoxazinone synthase enzymes" Rakesh Kumar, Rahul Keshri, Koushik Prodhan, Kanchan Shaikh, and Apparao Draksharapu. Dalton Trans., 2023 (Just accepted). https://doi.org/10.1039/D3DT00761H
40. ‘‘Formation and Reactivity of a Fleeting Ni(III) Bisphenoxyl Diradical Species’’ Awasthi. A, Leach, I. F. Engbers. S, Kumar. R, Eerlapally. R, Gupta. S, Klein. J. E. M. N, Draksharapu. A, Angew. Chemie Int., Ed. 2022, 61, e202211345 https://doi.org/10.1002/anie.202211345
39.‘‘Spectroscopic characterization of a Ru(III)-OCl intermediate: a structural mimic of haloperoxidase enzymes’’ Kumar. R, Awasthi. A, Gupta. S, Eerlapally. R, Draksharapu. A, Dalton Trans., 2022, 51, 12848, https://doi.org/10.1039/D2DT01947G (Dalton Transaction Hot Article)
Before IITK
38. “Unmasking Steps in Intramolecular Aromatic Hydroxylation by a Synthetic Nonheme Oxoiron(IV) Complex” Y. Sheng, C. S. Abelson, J. Prakash, A. Draksharapu, V. G. Young, Jr., L. Que, Jr., Angew. Chem. Int. Ed. 2021, 60, 20991.doi.org/10.1002/anie.202108309
37.“Ce(IV)- and HClO4-Promoted Assembly of an Fe2IV(µ-O)2 Diamond Core from its Monomeric Fe(IV)=O Precursor at Room Temperature” A. Draksharapu, S. Xu, L. Que, Jr., Angew. Chem. Int. Ed. 2020, 59, 22484.doi.org/10.1002/anie.202010027
36. “Sc3+-assisted O–O bond cleavage of a peroxodiiron(III) species from an iron(II) precursor and O2 to form a complex with an FeIV2O2 core” S. Banerjee, A. Draksharapu, P. M. Crossland, R. Fan, Y. Guo, M. Swart, L. Que, Jr., J. Am. Chem. Soc., 2020, 142, 4285.doi.org/10.1021/jacs.9b12081
35. “Acid pKa Dependence in O–O Bond Heterolysis of a Nonheme FeIII–OOH Intermediate to Form a Potent FeV=O Oxidant with Heme Compound I-Like Reactivity” S. Xu, A. Draksharapu, W. Rasheed, L. Que, Jr. J. Am. Chem. Soc., 2019, 141, 16093 ,doi.org/10.1021/jacs.9b08442.
34. “Spectroscopic and reactivity comparisons between nonheme oxoiron(IV) and oxoiron(V) species bearing the same ancillary ligand” V. Dantignana, J. Serrano-Plana, A. Draksharapu, C. Magallón, S. Banerjee, R. Fan, I. Gamba, Y. Guo, L. Que, Jr., M. Costas, A. Company, J. Am. Chem. Soc., 2019, 141, 15078 doi.org/10.1021/jacs.9b05758
33. “NMR Reveals That a Highly Reactive Nonheme FeIV=O Complex Retains Its Six‐Coordinate Geometry and S=1 State in Solution” S. Banerjee, W. Rasheed, R. Fan, A. Draksharapu, W. N. Oloo, Y. Guo, L. Que, Jr., Chem. Eur. J., 2019, 25, 9608.doi.org/10.1002/chem.201902048
32. ‘‘Facile Conversion of syn-[FeIV(O)(TMC)]2+ to its anti Isomer via Meunier’s Oxo-Hydroxo Tautomerism Mechanism’’ J. Prakash, Y. Sheng, A. Draksharapu, J. E. M. N. Klein, C. J. Cramer, L. Que, Jr., Angew. Chemie., Int. Ed., 2018, 58, 1995, DOI: 10.1002/anie.201811454
31. ‘‘H2O2 Oxidation by Fe(III)-OOH Intermediates and its Impact on Catalytic Efficiency’’ J. Chen, A. Draksharapu, D. Angelone, D. Unjaroen, S. K. Padamati, R. Hage, C. Duboc, W. R. Browne, ACS. Cat., 2018, 8, 9665, doi.org/10.1021/acscatal.8b02326
30. ‘‘A non-heme iron photocatalyst for light driven aerobic oxidation of methanol’’ J. Chen, S. Stepanovic, A. Draksharapu,* M. Gruden, W. R. Browne, Angew. Chemie., Int. Ed. 2018, 57, 3207, doi.org/10.1002/anie.201712678
29. ‘‘Crystallographic evidence for a sterically induced ferryl tilt in a non-heme oxoiron(IV) complex that makes it a better oxidant’’ W. Rasheed, A. Draksharapu, S. Banerjee, V. G. Young, Jr., R. Fan, Y. Guo, M. Ozerov, J. Nehrkorn, J. Krzystek, J. Telser, L. Que, Jr., Angew. Chemie., Int. Ed., 2018, 57, 9387, doi.org/10.1002/anie.201804836
28. ‘‘Activation of an FeIII-OOH intermediate by Sc3+ in the nonheme iron-catalyzed hydroxylation of cyclohexane and benzene’’ S. Kal, A. Draksharapu, L. Que, Jr., J. Am. Chem. Soc., 2018, 140, 5798, doi.org/10.1021/jacs.8b01435
27. ‘‘Spectroscopic and DFT Characterization of a Highly Reactive Nonheme FeV-oxo Intermediate’’ R. Fan, J. Serrano-Plana, W. N. Oloo, A. Draksharapu, E. Delgado-Pinar, A. Company, M. Borrell, J. Lloret-Fillol, E. García-España, Y. Guo, E. L. Bominaar, L. Que, Jr., M. Costas, E. Münck, J. Am. Chem. Soc., 2018, 140, 3916, doi.org/10.1021/jacs.7b11400
26. ‘‘Evidence for acid-triggered heterolytic O-O cleavage in a nonheme FeIII(OOH) species’’ J. Serrano-Plana, F. Acuña-Parés, V. Dantignana, W. N. Oloo, E. Castillo, A. Draksharapu, C. J. Whiteoak, V. Martin-Diaconsescu, M. G. Basallote, J. M. Luis, L. Que Jr., A. Company, M. Costas, Chem. Eur. J., 2018, 24, 5331, doi.org/10.1002/chem.201704851
25. ‘‘Nonheme Fe(IV)=O complexes as synthons for the assembly of heterodinuclear complexes related to the Fe-O-Mn active site of Class 1c RNRs’’ A. Zhou, P. Crossland, A. Draksharapu, A. J. Jasniewski, S. T. Kleespies, L. Que, Jr., J. Biol. Inorg. Chem., 2018, 23, 155, doi.org/10.1007/s00775-017-1517-5
24. ‘‘On the Lewis Acidity of the Oxoiron(IV) Unit in a Tetramethylcyclam Complex’’ J. E. M. N. Klein, A. Draksharapu, A. Shokri, C. J. Cramer, L. Que, Jr., Chem. - Eur. J., 2018, 24, 5373, doi.org/10.1002/chem.201704977
23. ‘‘Direct photochemical activation of non-heme Fe(IV)=O complexes’’ J. Chen, A. Draksharapu, E. Harvey, W. Rasheed, L. Que, Jr., W. R. Browne, Chem. Commun., 2017, 53, 12357, doi.org/10.1039/C7CC07452B
22. ‘‘Facile and Reversible Formation of Iron(III)–Oxo–Cerium(IV) Adducts from Nonheme Oxoiron(IV) Complexes and Cerium(III)’’ A. Draksharapu, W. Rasheed, J. E. M. N. Klein, L. Que, Jr., Angew. Chemie., Int. Ed., 2017, 56, 9091, doi.org/10.1002/anie.201704322
21. “Transient Formation and Reactivity of a High Valent Nickel(IV) Oxido Complex” S. K. Padamati, D. Angelone, A. Draksharapu, G. Primi, D. J. Martin, M. Tromp, M. Swart, W. R. Browne, J. Am. Chem. Soc., 2017, 139, 8718, doi.org/10.1021/jacs.7b04158
20.“Spectroscopic and Reactivity Comparisons of a Pair of TAML Complexes with FeV=O and FeIV=O Units” S. Pattanayak, A. J. Jasniewski, A. Rana, A. Draksharapu, K. K. Singh, A. Weitz, M. Hendrich, L. Que, Jr., A. Dey, S. S. Gupta, Inorg. Chem., 2017, 56, 6352.doi.org/10.1021/acs.inorgchem.7b00448
19.‘‘The Two Faces of Tetramethylcyclam in Iron Chemistry. Distinct Fe–O–M Complexes Derived from [FeIV(Osyn/anti)(TMC)]2+ Isomers’’ A. Zhou, J. Prakash, G. T. Rohde, J. E. M. N. Klein, S. T. Kleespies, A. Draksharapu, R. Fan, Y. Guo, C. J. Cramer, L. Que, Jr., Inorg. Chem., 2017, 56, 518.doi.org/10.1021/acs.inorgchem.6b02417
18. ‘‘Rapid hydrogen and oxygen atom transfer by a high-valent nickel-oxygen’’ T. Corona, A. Draksharapu, S. K. Padamati, I. Gamba, V. M. -Diaconescu, F. Acuña-Parés, W. R. Browne, A. Company, J. Am. Chem. Soc., 2016, 138, 12987, doi.org/10.1021/jacs.6b07544
17. ‘‘The Conflicting Role of Water in the Activation of H2O2 and the Formation and Reactivity of Non-Heme FeIII-OOH and FeIII-O-FeIII Complexes at Room Temperature’’ S. K. Padamati, A. Draksharapu, D. Unjaroen, W. R. Browne, Inorg. Chem., 2016, 55, 4211, doi.org/10.1021/acs.inorgchem.5b02976
16. ‘‘Spectroscopic Analyses on Reaction Intermediates Formed during Chlorination of Alkanes with NaOCl Catalyzed by a Nickel Complex’’ A. Draksharapu, Z. Codolà, L. Gómez, J. Lloret-Fillol, W. R. Browne, M. Costas, Inorg. Chem., 2015, 54, 10656,doi.org/10.1021/acs.inorgchem.5b01463
15.‘‘Reactivity of a Nickel(II) Bis(amidate) Complex with meta-Chloroperbenzoic Acid: Formation of a Potent Oxidizing Species’’ T. Corona, F. F. Pfaff, F. Acuña-Parés, A. Draksharapu, C. J. Whiteoak, V. Martin-Diaconescu, J. Lloret-Fillol, W. R. Browne, K. Ray, A. Company, Chem. - Eur. J., 2015, 21, 15029.doi.org/10.1002/chem.201501841
14. ‘‘Identification and Spectroscopic Characterization of Nonheme Iron(III) Hypochlorite Intermediates’’ A. Draksharapu, D. Angelone, M. G. Quesne, S. K. Padamati, L. Gómez, M. Costas, W. R. Browne, S. P. de Visser, Angew. Chemie., Int. Ed., 2015, 54, 4357, doi.org/10.1002/anie.201411995
13. ‘‘Characterization of the Interactions between Substrate, Cu(II) complex and DNA and their Role in Rate Acceleration in DNA-based Asymmetric Catalysis’’ A. Draksharapu, A. J. Boersma, W. R. Browne, G. Roelfes, Dalton Trans., 2015, 44, 3656, doi.org/10.1039/C4DT02734E
12. ‘‘Binding of Copper(II) Polypyridyl Complexes to DNA and Consequences for DNA-based Asymmetric Catalysis’’ A. Draksharapu, A. J. Boersma, M. Leising, A. Meetsma, W. R. Browne, G. Roelfes, Dalton Trans., 2015, 44, 3647, doi.org/10.1039/C4DT02733G
11. ‘‘Novel artificial metalloenzymes by in vivo incorporation of metal-binding unnatural amino acids’’ I. Drienovská, A. R. Martínez, A. Draksharapu, G. Roelfes, Chem. Sci., 2015, 6, 770, doi.org/10.1039/C4SC01525H
10.‘‘A dinuclear compound without a metal-metal bond. Dirhodium(III,III) carboxamidates’’ D. Angelone, A. Draksharapu, W. R. Browne, M. M. R. Choudhuri, R. Crutchley, X. Xu, X. Xu, M. P. Doyle, Inorg. Chim. Acta., 2015, 424, 235.doi.org/10.1016/j.ica.2014.09.006
9.‘‘Using the Full Spectrum for Raman: From UV to NIR’’ W. R. Browne, A. Draksharapu, E. Illy, Spectroscopy, 2014, 16 1 p.
8. ‘‘Stabilisation of µ-peroxido bridged Fe(III) intermediates with non-symmetric bidentate N-donor ligands’’ J. S. Pap, A. Draksharapu, M. Giorgi, W. R. Browne, J. Kaizer, G. Speier, Chem. Commun., 2014, 15, 1326, doi.org/10.1039/C3CC48196D
7.‘‘Unexpected reversible pyrazine based methylation in a Ru(II) complex bearing a pyrazin-2′-yl-1,2,4-triazolato ligand and its effect on acid/base and photophysical properties’’ C. Brennan, A. Draksharapu, W. R. Browne, J. J. McGarvey, J. G. Vos, M. T. Pryce, Dalton Trans., 2013, 42, 2546.doi.org/10.1039/C2DT31589K
6.‘‘Off-line reaction monitoring of the oxidation of alkenes in water using drop coating deposition Raman (DCDR) spectroscopy’’ S. Abdolahzadeh, N. M. Boyle, A. Draksharapu, A. Dennis, R. Hage, J. W. de Boer, W. R. Browne, Analyst, 2013, 138, 3163.doi.org/10.1039/C3AN00330B
5‘‘An electrochemical and Raman spectroscopy study of the surface properties of mononuclear ruthenium and osmium polypyridyl complexes based on pyridyl and thiophene based linkers’’ Y. Halpin, H. Logtenberg, L. Cleary, S. Schenk, M. Schulz, A. Draksharapu, W. R. Browne, J. G. Vos, Eur. J. Inorg. Chem., 2013, 4291.doi.org/10.1002/ejic.201300366
4. ‘‘Spectroscopy, photophysics and structural dynamics in metal-centred species, some recent investigations: from spin-crossover complexes and oxygen activation to photocatalysis’’ J. J. McGarvey, A. Draksharapu, W. R. Browne, Special Periodic Reports, 2013, 44, 68-94 (Book chapter).
3. ‘‘Ligand exchange and spin state equilibria of FeII(N4Py) and related complexes in aqueous media’’ A. Draksharapu, Q. Li, H. Logtenberg, T. A. van den Berg, A. Meetsma, J. S. Killeen, B. L. Feringa, R. Hage, G. Roelfes, W. R. Browne, Inorg. Chem., 2012, 51, 900, doi.org/10.1021/ic201879b
2. ‘‘Photo-induced oxidation of [FeII(N4Py)(CH3CN)]2+ and related complexes’’ A. Draksharapu, Q. Li, J. G. Roelfes, W. R. Browne, Dalton Trans., 2012, 41, 13180, doi.org/10.1039/C2DT30392B
1.‘‘Reinvestigating 2,5-di(pyridin-2-yl)pyrazine ruthenium complexes: selective deuteration and Raman spectroscopy as tools to probe ground and excited-state electronic structure in homo- and heterobimetallic complexes’’ M. Schulz, J. Hirschmann, A. Draksharapu, G. S. Bindra, S. Soman, A. Paul, R. Groarke, M. T. Pryce, S. Rau, W. R. Browne, J. G. Vos, Dalton Trans., 2011, 40, 10545.doi.org/10.1039/C1DT10960J