Sundargopal Ghosh
Articles written in Journal of Chemical Sciences
Volume 123 Issue 6 November 2011 pp 847-851
Synthesis and reactivity of dimolybdathiaborane cluster [(Cp∗Mo)2B4SH6] (Cp∗ = $\eta^5^-C5Me5)
Kirankumar Varma Chakrahari Sundargopal Ghosh
Chemistry and reactivity of dimolybdathiaborane, [(Cp∗Mo)2B4SH6],
Volume 124 Issue 6 November 2012 pp 1255-1260
Arunabha Thakur Sinjinee Sardar Sundargopal Ghosh
Two Cu2+-specific colorimetric sensors, based on ferrocene-carbohydrate bioconjugates,
Volume 126 Issue 5 September 2014 pp 1597-1603 Special issue on Chemical Crystallography
Kiran Kumarvarma Chakrahari Rongala Ramalakshmi Dudekula Sharmila Sundargopal Ghosh
Recently we described the synthesis and structural characterization of various dimetallaherteroborane clusters, namely
Volume 128 Issue 7 July 2016 pp 1025-1032 Regular Article
RONGALA RAMALAKSHMI KOUSHIK SAHA ANAMIKA PAUL SUNDARGOPAL GHOSH
Reactivity of [Cp*Mo(CO)₃Me], 1 with various chalcogenide ligands such as Li[BH₂E₃] andLi[BH₃EFc]] (E = S, Se or Te; Fc = (C₅H₅-Fe-C₅H₄)) has been described. Room temperature reaction of 1 with Li[BH₂E₃] (E = S and Se) yielded metal chalcogenide complexes [Cp*Mo(CO)₂(ŋ2-S₂CCH3)], 2 and [Cp*Mo(CO)₂(ŋ1-SeC₂H₅)], 3. In compound 2, {Cp*Mo(CO)2} fragment adopts a four-legged piano-stool geometry with a η2-dithioacetate moiety. In contrast, treatment of 1 with Li[BH3(EFc)] (E = S, Se or Te; Fc = C₅H₅-Fe-C₅H₄) yielded borate complexes [Cp*Mo(CO)₂(μ-H)(μ-EFc)BH₂], 4-6 in moderate yields. Compounds 4-6 are too unstable and gradual conversion to [{Cp*Mo(CO)₂}₂(μ-H)(μ-EFc] (7: E = S; 8: Se) and [{Cp*Mo(CO)₂}₂(μ-TeFc)₂], 9 happened by subsequent release of BH₃. All the compounds have been characterized by mass spectrometry, IR, multinuclear NMR spectroscopy and structures were unequivocally established by crystallographic analysis for compounds 2, 3 and 7.
Volume 130 Issue 7 July 2018 Article ID 0089
BENSON JOSEPH SUBRAT KUMAR BARIK SOUMYA KUMAR SINHA THIERRY ROISNEL SUNDARGOPAL GHOSH
Treatment of
Volume 131 Issue 12 December 2019 Article ID 0123
Syntheses and structures of chalcogen-bridged binuclear group 5 and 6 metal complexes
MOULIKA BHATTACHARYYA RINI PRAKASH CHANDAN NANDI MONOJIT GHOSAL CHOWDHURY BEESAM RAGHAVENDRA THIERRY ROISNEL SUNDARGOPAL GHOSH
Syntheses and structural elucidations of a series of chalcogen stabilized binuclear complexes of group 5 and 6 transition metals have been described. Room temperature reaction of [Cp*CrCl]2 (Cp* = h5- C5Me5) with Li[BH3(SePh)] afforded a Se inserted binuclear chromium complex, [(Cp*Cr)2(m-Se2SePh)2], 1.In an attempt to make the analogous complexes with heavier group 6 metals, reactions of [Cp*MCl4] (M = Mo and W) with Li[BH3(SePh)] were carried out that yielded Se inserted binuclear complexes [(Cp*M)2(m-Se)2(m-SePh)2], 2 and 3 (2: M = Mo and 3: M = W) along with known [(Cp*M)2B5H9], 4a–b (4a: M = Mo and 4b: M = W). Similarly, the reactions of [Cp*NbCl4] with Li[BH3(EPh)] (E = S or Se)followed by thermolysis led to the formation of binuclear chalcogen complexes [(Cp*Nb)2(m-E2)2], 5 and 6 (5: E = S and 6: E = Se) and known [(Cp*Nb)2(B2H6)6], 7. All these complexes have been characterized by 1H and 13C NMR spectroscopy and mass spectrometry. The structural integrity of complexes 1, 3, 5 and 6 was established by the X-ray diffraction studies. The DFT studies further exemplify the bonding interactions present in these complexes, especially the multiple bond character between the metals in 1–3.
Volume 132 All articles Published: 22 January 2020 Article ID 0024
Correction to: Syntheses and structures of chalcogen-bridged binuclear group 5 and 6 metal complexes
MOULIKA BHATTACHARYYA RINI PRAKASH CHANDAN NANDI MONOJIT GHOSAL CHOWDHURY BEESAM RAGHAVENDRA THIERRY ROISNEL SUNDARGOPAL GHOSH
Volume 135, 2023
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