Explanipedia

On Generalized Likelihood Estimation Based on the Logarithmic Norm Relative Entropy Open

Himanshi Singh, Abhik Ghosh, Nil Kamal Hazra · 2025

Traditional likelihood based methods for parameter estimation get highly affected when the given data is contaminated by outliers even in a small proportion. In this paper, we consider a robust parameter estimation method, namely the minim…

Faraday Depolarization Study of a Radio Galaxy Using LOFAR Two-metre Sky Survey: Data Release 2 Open

S Paul, Abhik Ghosh · 2025

We present a detailed depolarization analysis of a radio galaxy ILTJ012215.21+254334.8, utilizing polarimetric data from the LOFAR Two-metre Sky Survey (LoTSS) Data Release 2 (DR2) catalogue. The selected source exhibits a rotation measure…

Use of homeopathic products against cattle tick Rhipicephalus (Boophilus) microplus Open

Abhik Ghosh, Chitta Ranjan Sarker, Manali Bhadra · 2025

Reduced Cobalt Corroles: Isolation, Reactivity, and Electronic Structure Open

Christopher Reyes, Jeanet Conradie, Abhik Ghosh, Hadi D. Arman, Zachary J. Tonzetich · 2025

Chemical reduction of [Co^III(py)₂(TPC)] (TPC = trianion of 5,10,15-triphenylcorrole) with one or two molar equivalents of KC₈ or Na(Hg) generates the reduced cobalt corrolate species, [Co^II(TPC)]…

Asymptotic breakdown point analysis of the minimum density power divergence estimator under independent non-homogeneous setups Open

Sirsendu Jana, Subhrajyoty Roy, Ayanendranath Basu, Abhik Ghosh · 2025

The minimum density power divergence estimator (MDPDE) has gained significant attention in the literature of robust inference due to its strong robustness properties and high asymptotic efficiency; it is relatively easy to compute and can …

Electronic Manifestations of Scandide Contraction: Theoretical Photoelectron Spectroscopy of Monovalent Group 13 Compounds Open

Jeanet Conradie, Kristian Torstensen, Pekka Pyykkö, Abhik Ghosh · 2025

A wide-ranging density functional theory (DFT) survey of monovalent Group 13 complexes (trielylenes) has afforded detailed insights into periodic trends in these compounds. Five classes of neutral complexes were examined, based on β-diketi…

Rhenium-Selenido Corroles: Reflections on 5d Metalloporphyrins and Metallocorroles as Triplet Emitters and Photosensitizers Open

Abraham B. Alemayehu, Jeanet Conradie, Simon Larsen, Bjørn Cicerôn Lukas Pérez, Nicholas S. Settineri , et al. · 2025

Following the successful synthesis of rhenium-oxido, rhenium-imido, and rhenium-sulfido corroles, a series of para-X-substituted rhenium-selenido triarylcorroles (X = OCH₃, CH₃, H, F, CF₃) have been …

Electronic Manifestations of Scandide Contraction: Theoretical Photoelectron Spectroscopy of Monovalent Group 13 Compounds Open

Jeanet Conradie, Kristian Torstensen, Pekka Pyykkö, Abhik Ghosh · 2025

A wide-ranging DFT survey of monovalent Group 13 complexes (trielylenes) has afforded detailed insights into periodic trends in these compounds. Four classes of neutral complexes were examined, based on -diketiminate, bis(imino)carbazolate…

Doubly Stereogenic Sandwich Frameworks: Diastereomeric Metallobiscorroles Open

Kristian Torstensen, Florian Sixt, Abraham B. Alemayehu, Nicholas S. Settineri, Abhik Ghosh · 2025

A number of Group 6 metallobiscorrole sandwich compounds with square-antiprismatic coordination were separated into diastereomers by means of careful preparative thin-layer chromatography. The diastereomers differ with respect to the relat…

Rhenium-Selenido Corroles: Reflections on 5d Metalloporphyrins and Metallocorroles as Triplet Emitters and Photosensitizers Open

Abraham B. Alemayehu, Jeanet Conradie, Simon Larsen, Bjørn Cicerôn Lukas Pérez, Nicholas S. Settineri , et al. · 2025

Following the successful synthesis of rhenium-oxido, -imido, and -sulfido corroles, a series of para-X-substituted rhenium-selenido triarylcorroles (X = OCH3, CH3, H, F, CF3) have been prepared in 70-76% yields. A one-pot, two-step procedu…

The Enemark-Feltham formalism at 50: An interview with John Enemark and a personal reflection Open

Abhik Ghosh, John H. Enemark · 2025

In an interview, one of us (JHE) recounts the state of NO chemistry around the middle of the twentieth century and the events that led to the development of Enemark and Feltham's {MNO}ⁿ notation. A personal perspective by one of…

Understanding Anionic Hyperporphyrins: TDDFT Calculations on Peripherally Deprotonated <i>meso</i>-Tetrakis(4-hydroxyphenyl)porphyrin Open

Jeanet Conradie, Carl C. Wamser, Abhik Ghosh · 2025

Presented herein is a DFT/TDDFT study of meso-tetrakis(4-hydroxyphenyl)porphyrin (H₂[THPP]) and its O-deprotonated tetraanionic form; the latter was modeled as both a free tetraanion and with various counterions. B…

NO Oxidation States in Nonheme Iron Nitrosyls: A DMRG-CASSCF Study of {FeNO}<sup>6–10</sup> Complexes Open

Quan Manh Phung, Ho Ngoc Nam, Vic Austen, Takeshi Yanai, Abhik Ghosh · 2025

Building upon an earlier study of heme-nitrosyl complexes (Inorg. Chem. 2023, 62, 20496-20505), we examined a wide range of nonheme {FeNO}^6-10 complexes (the superscript represents the Enemark-Feltham count)…

The Type D Hyperporphyrin Effect Open

Carl C. Wamser, Jeanet Conradie, Abhik Ghosh · 2025

DFT and TDDFT calculations lend credence to the importance of a Type D resonance form for triply protonated 5,10,15-tris(4-aminophenyl)-20-(4-pyridyl)porphyrin (with all central nitrogens and the pyridine nitrogen protonated), in which all…

Rhenium-Sulfido and -Dithiolato Corroles: Reflections on Chalcophilicity Open

Abraham B. Alemayehu, Nicholas S. Settineri, Arianna Lanza, Abhik Ghosh · 2024

The high-temperature (∼180 °C) reaction between free-base meso-triarylcorroles and Re₂(CO)₁₀, followed by exposure to PCl₃ and thiols (or elemental sulfur), affords rhenium-sulfido (ReS) corroles in …

NO Oxidation States in Nonheme Iron Nitrosyls: A DMRG-CASSCF Study of {FeNO}6 –10 Complexes Open

Quan Manh Phung, Ho Ngoc Nam, Vic Austen, Takeshi Yanai, Abhik Ghosh · 2024

Building upon an earlier study of heme-nitrosyl complexes (Inorg. Chem. 2023, 62, 20496–20505), we examined a wide range of nonheme {FeNO}6–10 complexes (the superscript represents the Enemark-Feltham count) and two dinitrosyl iron complex…

Conditional Variable Screening for Ultra‐High Dimensional Longitudinal Data With Time Interactions Open

Andrea Bratsberg, Abhik Ghosh, Magne Thoresen · 2024

In recent years, we have been able to gather large amounts of genomic data at a fast rate, creating situations where the number of variables greatly exceeds the number of observations. In these situations, most models that can handle a mod…

Near-Infrared Photothermal Conversion by Isocorrole and Phlorin Derivatives Open

Jana R. Caine, Simon Larsen, Abhik Ghosh, Zachary M. Hudson · 2024

Photothermal therapy is a promising strategy for treating tumours and bacterial infections by using light irradiation to locally heat tissues. Metalloisoporphyrinoid materials have been investigated for their use as singlet oxygen photosen…

A Componentwise Estimation Procedure for Multivariate Location and Scatter: Robustness, Efficiency and Scalability Open

Soumya Chakraborty, Ayanendranath Basu, Abhik Ghosh · 2024

Covariance matrix estimation is an important problem in multivariate data analysis, both from theoretical as well as applied points of view. Many simple and popular covariance matrix estimators are known to be severely affected by model mi…

Understanding Anionic Hyperporphyrins: TDDFT Calculations on Peripherally Deprotonated Meso-tetrakis(4-hydroxyphenyl)porphyrin Open

Jeanet Conradie, Carl C. Wamser, Abhik Ghosh · 2024

Presented herein is a DFT/TDDFT study of meso-tetrakis(4-hydroxyphenyl)porphyrin (H2[THPP]) and its O-deprotonated tetraanionic form; the latter was modeled as both a tetralithium complex and as a free tetraanion. Based on our calculations…

Robust Inference for Non-Linear Regression Models with Applications in Enzyme Kinetics Open

Sirsendu Jana, Abhik Ghosh · 2024

Despite linear regression being the most popular statistical modelling technique, in real-life we often need to deal with situations where the true relationship between the response and the covariates is nonlinear in parameters. In such ca…

Exploring Citation Diversity in Scholarly Literature: An Entropy-Based Approach Open

suchismita Banerjee, Abhik Ghosh, Banasri Basu · 2024

This study explores the citation diversity in scholarly literature, analyzing different patterns of citations observed within different countries and academic disciplines. We examine citation distributions across top institutions within ce…

Gold Tripyrrindione: Redox Chemistry and Reactivity with Dichloromethane Open

Clayton J. Curtis, Iva Habenšus, Jeanet Conradie, Andrey A. Bardin, Brent L. Nannenga , et al. · 2024

The identification of ligands that stabilize Au(III) centers has led to the isolation of complexes for applications in catalysis, gold-based therapeutics, and functional materials. Herein, we report the coordination of gold by tripyrrin-1,…

Inverse Photoemission Spectroscopy of Coinage Metal Corroles: Comparison with Solution-Phase Electrochemistry Open

L. Giovanelli, Y. Ksari, Hela Mrezguia, Eric Salomon, Marco Minissale , et al. · 2024

A combined direct and inverse photoemission study of coinage metal corroles suggests that the latter technique, in favorable cases, can provide some additional information relative to electrochemical measurements. Thus, whereas inverse pho…

Inverse Photoemission Spectroscopy of Coinage Metal Corroles: Comparison with Solution-Phase Electrochemistry Open

L. Giovanelli, Y. Ksari, Hela Mrezguia, Eric Salomon, Marco Minissale , et al. · 2024

A combined direct and inverse photoemission study of coinage metal corroles suggests that the latter technique, in favorable cases, can provide some additional information relative to electrochemical measurements. Thus, whereas inverse pho…

Electronic Structure of Metallophlorins: Lessons from Iridium and Gold Phlorin Derivatives Open

Simon Larsen, Joseph A. Adewuyi, Kolle E. Thomas, Jeanet Conradie, Yoann Rousselin , et al. · 2024

Phlorins have long remained underexplored relative to their fully conjugated counterparts, such as porphyrins, hydroporphyrins, and corroles. Herein, we have attempted to bridge that knowledge gap with a scalar-relativistic density functio…

A tribute to Frances Ann Walker Open

Abhik Ghosh, Anabella Ivancich · 2024

Inverse Hypercorroles Open

W. Ryan Osterloh, Nicolas Desbois, Jeanet Conradie, Claude P. Gros, Karl M. Kadish , et al. · 2024

Ground-state and time-dependent density functional theory (TDDFT) calculations with the long-range-corrected, Coulomb-attenuating CAMY-B3LYP exchange-correlation functional and large, all-electron STO-TZ2P basis sets have been used to exam…

Robust inference for linear regression models with possibly skewed error distribution Open

Amarnath Nandy, Ayanendranath Basu, Abhik Ghosh · 2024

Traditional methods for linear regression generally assume that the underlying error distribution, equivalently the distribution of the responses, is normal. Yet, sometimes real life response data may exhibit a skewed pattern, and assuming…

Hypsochlorins Open

Simon Larsen, Jeanet Conradie, Nicolas Desbois, Claude P. Gros, Abhik Ghosh · 2024

Both the Soret and Q bands of chlorin e6 complexes blueshift on going from Zn to Pd to Pt as the coordinated metal, establishing the latter two complexes as hypsochlorins. DFT/TDDFT calculations indicate that the blueshifts appear to be re…

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