Dear Paolo,

many thanks, your solution worked like a charm!

Best regards,

Jean-Marc


Le 01/06/2023 à 23:57, Paolo Tosco a écrit :
Dear Jean-Marc,

you may retain the original mol block wedging and avoid introducing H atoms as follows:

from rdkit import Chem
from rdkit.Chem.Draw import rdMolDraw2D
from IPython.display import SVG

mol = Chem.MolFromMolBlock("""trans-decalin
      RDKit          2D

  10 11  0  0  0  0  0  0  0  0999 V2000
     1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
     0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -3.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -3.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -3.0000    2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -1.5000    2.5981    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
    -0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
     0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0  0  0  0 0  0
   1  2  1  0
   2  3  1  0
   4  3  1  1
   4  5  1  0
   5  6  1  0
   6  7  1  0
   7  8  1  0
   9  8  1  6
   9 10  1  0
  10  1  1  0
   9  4  1  0
M  END
""")

drawer = rdMolDraw2D.MolDraw2DSVG(300, 200)
drawer.drawOptions().prepareMolsBeforeDrawing = False
mol_draw = rdMolDraw2D.PrepareMolForDrawing(mol, addChiralHs=False, 
wedgeBonds=False)
Chem.ReapplyMolBlockWedging(mol_draw)
drawer.DrawMolecule(mol_draw)
drawer.FinishDrawing()
SVG(drawer.GetDrawingText())


Cheers,
p.

On Thursday, June 1, 2023, Jean-Marc Nuzillard <jm.nuzill...@univ-reims.fr> wrote:

    Dear all,

    starting from this mol block:
    trans-decalin
         RDKit          2D

     10 11  0  0  0  0  0  0  0  0999 V2000
        1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
        0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -0.7500   -1.2990    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -1.5000    0.0000    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -3.0000    0.0000    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -3.7500    1.2990    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -3.0000    2.5981    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -1.5000    2.5981    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
       -0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
        0.7500    1.2990    0.0000 C   0  0  0  0  0  0  0 0  0  0  0  0
      1  2  1  0
      2  3  1  0
      4  3  1  1
      4  5  1  0
      5  6  1  0
      6  7  1  0
      7  8  1  0
      9  8  1  6
      9 10  1  0
     10  1  1  0
      9  4  1  0
    M  END

    I tried to experiment with the great post recently published
    in the rdkit-blog about drawing options.
    The Mol block hereabove has no explicit hydrogen
    but the function DrawMolecule()
    adds two hydrogen atoms at the ring junction :

    Even though this feature can be very helpful,
    is it possible to let wedges along C-C bonds
    carry out the geometry information without
    introducing H atoms at the ring junction?

    Best,

    Jean-Marc Nuzillard

-- Jean-Marc Nuzillard
    Directeur de Recherches au CNRS

    Institut de Chimie Moléculaire de Reims
    CNRS UMR 7312
    Moulin de la Housse
    CPCBAI, Bâtiment 18
    BP 1039
    51687 REIMS Cedex 2
    France

    ORCID : 0000-0002-5120-2556
    Tel : +33 (0)3 26 91 82 10

    http://www.univ-reims.fr/icmr

    https://nuzillard.github.io/PyLSD  <https://nuzillard.github.io/PyLSD>



--
Jean-Marc Nuzillard
Directeur de Recherches au CNRS

Institut de Chimie Moléculaire de Reims
CNRS UMR 7312
Moulin de la Housse
CPCBAI, Bâtiment 18
BP 1039
51687 REIMS Cedex 2
France

ORCID : 0000-0002-5120-2556
Tel : +33 (0)3 26 91 82 10

http://www.univ-reims.fr/icmr

https://nuzillard.github.io/PyLSD
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