cht man page on DragonFly

Man page or keyword search:  
man Server   44335 pages
apropos Keyword Search (all sections)
Output format
DragonFly logo
[printable version]

CHT(1)									CHT(1)

       cht - chemtool drawings analyzer

       cht [-options] filename.cht

       cht  is a commandline tool to derive the sum formula and molecular mass
       of the molecule depicted in a chemtool drawing file.  It is also avail‐
       able  from  within  chemtool  to	 calculate  these data for the current
       structure or a marked fragment of it.

       cht currently recognizes the element symbols  C, H, O, N, P, S, Si,  B,
       Br,  Cl,	 F, I, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Ge,
       In, K, Li, Mg, Mn, Na, Ni, Pb, Rb, Sb, Sc, Se, Sn, Sr, Te, Ti,  Tl,  V,
       Zn  (that  is,  all main group elements except the noble gases, and the
       first row of transition metals) and the abbreviations Ac, Ade, Bn,  Bu,
       iBu,  tBu,  Bz,	BOC,  Cyt, CE, DBAM, DMAM, DMTr, Et, Gua, Me, Ms, MOC,
       MOM, MMTr, Ph, Pr, iPr, Tf, Thy, Tol, Tr, Ts, TBDMS, TBDPS, TMS,	 TMTr,
       Ura, Z.
       It can handle two levels of parentheses; e.g. P[OCH(CH_3)_2]_3.
       When cht detects any duplicate (overlapping) bonds in the drawing file,
       it will prepend an exclamation  mark  to	 the  calculated  (and	likely
       wrong) sum formula.

       Cht understands the following options.

       -h , --help
	      Displays brief help and list of options.

       -e , --exact
	      Calculate exact mass for MS.

       -v , --verbose
	      Be verbose.

       -d , --debug
	      Be extremely verbose.

       Cht can misinterpret molecules that contain the 'aromatic ring' symbol,
       as it uses a fixed search radius to identify the aromatic  system  that
       it  denotes.  It also does not handle the 'partial double bond', so you
       should avoid these two in drawings that you intend to use with cht.

       A label that is offset from the corresponding bond  end	by  more  than
       five  pixels  is	 not  recognized, so that the default CH2 or CH3 group
       enters the calculation in its place.

       In general, one should check the plausibility of the generated sum for‐
       mula wherever possible.

       chemtool (1).

       Radek Liboska

				 June 17, 2001				CHT(1)

List of man pages available for DragonFly

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net