IR @ Goa University

Browsing Chemical Sciences by Title

Browsing Chemical Sciences by Title

Sort by: Order: Results:

  • On questionable ferroelectric and piezoelectric properties in single crystals 
    Tylczynski, Z.; Petrosyan, A.M.; Srinivasan, B.R. (Journal of Crystal Growth. 498; 2018; 62-66.)
    In this short review, a critical analysis of the purported ferroelectric and piezoelectric properties of crystals which have been published is critiqued.
  • On the crystal growth of 'tris thiourea chromium(III) sulphate', 'potassium thiourea thiocyanide' and 'bis thiourea iron(II) sulphate' 
    Srinivasan, B.R.; Tylczynski, Z. (Journal of Thermal Analysis and Calorimetry. 121(3); 2015; 1183-1184.)
    We argue that the 'tris thiourea chromium(III) sulphate' crystal (Madhurambal et al. in J Therm Anal Calorim 108:905-910, 2012), potassium thiourea thiocyanide crystal (Ramamurthi et al. in J Therm Anal Calorim 104:943-947, ...
  • On the distorted {NiN6} octahedron in hexakis(imidazole)nickel(II) bis(4-nitrobenzoate) dihydrate 
    Srinivasan, B.R.; Sawant, J.V.; Raghavaiah, P. (Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 48(2); 2009; 181-188.)
    The reaction of [Ni(H2O)(6)]Cl-2 with the sodium salt of 4-nitrobenzoic acid (4-nbaH) in the presence of imidazole results in the formation of the title compound hexakis(imidazole)nickel(II) bis(4-nitrobenzoate) dihydrate ...
  • On the existence of "diglycine ammonium sulphate" 
    Petrosyan, A.M.; Srinivasan, B.R. (Optik: International Journal for Light and Electron Optics. 127(8); 2016; 3989-3990.)
    We prove that a so-called "Semi Organic Non Linear Optical Crystal: Diglycine ammonium sulphate" reported by B. Helina, (Optik 127 (2016) 1401-1404) is not a new semi organic nonlinear optical crystal. Instead it is the ...
  • On the existence of "L-arginine acetamide" 
    Petrosyan, A.M.; Srinivasan, B.R. (Journal of Thermal Analysis and Calorimetry. 120(2); 2015; 1077-1078.)
    We argue that the "L-arginine acetamide" crystal reported by Anitha et al. (J Therm Anal Calorim 119:785–789, 2015) is actually the well-known monoclinic form of anhydrous L-arginine hydrochloride crystal.
  • On the existence of 'bis (L-glutamine) potassium nitrate' crystal 
    Srinivasan, B.R.; Shyama, S.K.; Naik, S.G.; Jyai, R.N. (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 136(B); 2015; 334-337.)
    Slow evaporation of an aqueous solution containing L-glutamine and potassium nitrate in 2:1 mole ratio results in the fractional crystallization of L-glutamine and not the formation of a so called bis (L-glutamine) potassium ...
  • On the existence of 'glycine barium nitrate potassium nitrate' crystal 
    Srinivasan, B.R. (Optik. 125(14); 2014; 3606-3607.)
    It is proved that a so called novel nonlinear optical glycine barium nitrate potassium nitrate single crystal grown by slow evaporation solution growth technique by Ravishankar et al. (Optik, 2013) is actually the well-known ...
  • On the existence of 'L-alanine cadmium bromide' 
    Srinivasan, B.R. (Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. 116; 2013; 639-641.)
    It is argued that the recently reported nonlinear optical crystal l-alanine cadmium bromide, grown by slow solvent evaporation method at room temperature [P. Ilayabarathi, J. Chandrasekaran, Spectrochim. Acta 96A (2012) ...
  • On the existence of 'L-asparagine cadmium chloride monohydrate' crystal 
    Srinivasan, B.R. (Optik. 125(12); 2014; 2927-2929.)
    It is argued that the nonlinear optical single crystal `l-asparagine cadmium chloride monohydrate' grown by the slow evaporation solution growth technique by Masilamani et al. (Optik, 123 (2012) 1304-1306) is actually the ...
  • On the existence of 'thiourea urea magnesium chloride' and 'urea thiourea sodium chloride' 
    Srinivasan, B.R. (Journal of Thermal Analysis and Calorimetry. 119(2); 2015; 985-988.)
    Gopinath et al. report to have grown single crystals of thiourea urea magnesium chloride (1) (J Therm Anal Calorim 2012, 109:841-5) and urea thiourea sodium chloride (2) (J Therm Anal Calorim 2012, 110:789-92) from an ...
  • On the existence of ethylenediaminetetraacetic acid (EDTA) doped zinc sulphate heptahydrate crystal 
    Srinivasan, B.R. (Published online on arXiv)
    It is argued that the ethylenediaminetetraacetic acid (EDTA) doped zinc sulphate heptahydrate crystal reported by Raja et al Spectrochim. Acta 99A (2012) 23 is the well-known zinc sulphate heptahydrate.
  • On the existence of potassium 'para-nitrophenolate dihydrate' 
    Srinivasan, B.R. (Science Postprint. 1(1); 2014; Article ID e00033-.)
    The author of a paper titled, "Growth, optical, mechanical and electrical studies of nonlinear optical single crystal: potassium para-nitrophenolate dihydrate" in Science Postprint (2014) (http://www.spp-j.com/spp/1-1/sp ...
  • On the importance of H-bonding interactions in organic ammonium tetrathiotungstates 
    Srinivasan, B.R.; Naether, C.; Dhuri, S.N.; Bensch, W. (Monatshefte Fur Chemie. 137; 2006; 397-411.)
    Four new organic ammonium tetrathiotungstates (N-Me-enH2)[WS4] (1), (N,N'-dm-1,3-pnH2)[WS4] (2), (1,4-bnH2)[WS4] (3), and (mipaH)2[WS4] (4), (N-Me-enH2 = N-methylethylenediammonium, N,N'-dm-1,3-pnH2 = N,N'-dimethyl-1,3-p ...
  • On the influence of L-threonine on thiourea and urea on L-threonine 
    Petrosyan, A.M.; Srinivasan, B.R. (Materials Research Innovations. 21(6); 2017; 377-378.)
    We show that the papers on ‘L-threonine doped thiourea’ (Thilakavathi et al., Materials Research Innovations 20 (2016) 254–258) and on obtaining a compound ‘urea L-threonine’ (Jaikumar and Kalainathan, Crystal Research ...
  • On the second harmonic generation activity in centrosymmetric crystals 
    Srinivasan, B.R.; Parsekar, N.U.; Apreyan, R.A.; Petrosyan, A.M. (Molecular Crystals and Liquid Crystals. 680(1); 2019; 75-84.)
    The observation of second harmonic generation (SHG) signals, which is forbidden in centrosymmetric crystals, should necessitate clarification of their causes. The authors of a recent paper (Sivaraman et al Molecular crystals ...
  • On the syntheses and structures of two calcium coordination polymers containing terminal amide ligands 
    Srinivasan, B.R.; Dhavskar, K.T. (Indian Journal of Chemistry. Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 56(4); 2017; 387-393.)
    The syntheses and crystal structure of the calcium coordination polymers [Ca(NMF)sub(2) (4-nba)sub(2)] 1 (4-nba = 4-nitrobenzoate; NMF=N-methylformamide) and [Ca(BA)sub(2) (4-nba)sub(2) ] 2 (BA=benzamide) is reported. An ...
  • Once again on the existence of "1,3 diglycinyl thiourea" 
    Petrosyan, A.M.; Srinivasan, B.R. (Optik. 127(); 2016; 2500-2501.)
    We argue that the existence of the compound "1,3 diglycinyl thiourea" reported by Kumar et al. (Optik 126, 1117-1122 (2015)) and two more previous publications is not confirmed by structure determination to date and the ...
  • Once again on the existence of "L-alanine lithium chloride" 
    Srinivasan, B.R.; Petrosyan, A.M. (Optik. 127(); 2016; 6094-6095.)
    We prove that a so-called "unidirectional grown l-alanine lithium chloride single crystal" reported by Parasuraman et al. (Optik 126 (2015) 4516-4522) is l-alanine.
  • A one-dimensional barium(II) coordination polymer with a coordinated nitro group of 2-nitrobenzoate 
    Srinivasan, B.R.; Shetgaonkar, S.Y.; Raghavaiah, P. (Journal of Chemical Sciences. 120(2); 2008; 249-257.)
    The aqueous reaction of barium carbonate with 2-nitrobenzoic acid (2-nbaH) results in the formation of a one-dimensional coordination polymer, catena-poly[[hexa(aqua)dibarium(II)]bis[(mu(2)-2-nitrobenzoate-O,O,O-NO2)(mu( ...
  • Optimization of synthesis of nickel-zinc-ferrite from oxalates and oxalato hydrazinate precursors 
    Moye, V.; Rane, K.S.; Kamat-Dalal, V.N. (Journal of Materials Science-Materials in Electronics. 1(4); 1990; 212-218.)
    Ferrites, Ni(x)Zn(1−x) Fe(2)O(4) are being synthesised by five different methods, namely (a) autocatalytic decomposition and air sintering of mixed-metal oxalato hydrazinate prepared by a solution method, (b) decomposition ...

Search IR


Advanced Search

Browse

My Account