Dr. A.CHANDRASEKARAN'S HOMEPAGE

• CHEMIST: (Ph.D. in Inorganic Chemistry; Experience: since 1986)
  • PHOSPHORUS CHEMISTRY: ** (Extensive Details available here)
    | Introduction | Chemistry | Mechanisms | Uses | Problems | Literature |
  • Silicon Chemistry
  • Phosphazene Chemistry
  • Coordination Chemistry
• X-RAY CRYSTALLOGRAPHER: ** (Experience: since 1989)
• NMR SPECTROSCOPIST: (¹H, ¹³C, ³¹P & ²⁹Si 1-D NMR): (Experience: since 1992)
• Instruments Operator:
  • Hitachi U-3400 UV Spectrometer
  • Bio-Rad (FT) and Perkin-Elmer 597 IR Spectrometers
  • Heraeus CHN-O-Rapid Elemental Analyzer
  • Bruker DPX-300, ACF-200, AF-200 and MSL-300 NMR Instruments.
  • Waters HPLC Instrument
  • Enraf-Nonius CAD4 Single Crystal X-ray Diffractometer (~220 Structures in 10 Years)
  • Nonius KappaCCD Single Crystal X-ray Diffractometer (~580 datasets; 01-2000 to 09-2005)
• Computers User: PCs (DOS and Windows), VAX, MicroVax, DEC-1090, IBM RISC-6000 and some UNIX.
• FORTRAN Programer:
  • XTALDB.FOR ** To handle the recent KappaCCD's high output of datasets, this small database program has been written. It stores some sample, cell and data information in ascii database and currently searches on cell, formula, crystal code. Also it generates summary for: Space Groups, User/Group and Annual data.
  • CIF2INS.FOR ** Creates .INS (and .HKL) files for SHELXS (and SHELXL) from KappaCCD's IMPORT.CIF file.
  • XRAYACS.FOR ** CAD4 Single crystal X-ray data processing (Intensity calculation, LP correction & absortion corrections; either F or F²). More than 1500 lines.
  • SELECT.FOR ** To select strong reflections in desired angle range for refining the cell.
  • CHIACS.FOR ** For selecting reflections for PSI data collection (Symmetry equivalents can be searched upto orthorhombic only).
  • DATAFALL.FOR ** To study the fall of intensity as a function of Theta.
  • FOFC.FOR ** To convert the CIF format Fo-Fc output of SHELXL-93 to three reflections per line for WINWORD.
  • CHNACS.FOR ** Calculation of elemental % from Empirical Formula
  • NMRTC.FOR ** Calculation of activation energy from NMR Tc (Coalescense Temperature) and frequency difference; it can back calculate where the Tc will be for peaks for which Tc was not observed but activation energy has been calculated from other peaks.
• Typing Thamil2 in English made easy!!! (see the THAMIL2 page)

MEMBER in

• American Chemical Society - National

  AREAS OF INTEREST

  • Main Group Chemistry
  • Coordination Chemistry
  • Organometallic Chemistry
  • Crystallography
  • Instruments and Computers

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  SOME USEFUL WWW CONNECTIONS:

  • Chemistry, UCLA
  • Sigma, Aldrich & Fluka
  • International Union of Crystallography, [USA mirror]
  • International Union of Crystallography, [original]
  • Yahoo
  • Netscape
  • India Network Foundation, BGSU
  • The IndiaServer

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  Created by Dr. A. CHANDRASEKARAN.
  Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA.

    visits since 11-DEC-97

  Created on: December, 1, 1997; Last Modified on: AUG, 02, 2009.
  Suggestions Welcome!