[Rdkit-discuss] Extended Huckel Matrices

2020-02-12 Thread Zan Mahmood via Rdkit-discuss
Hey I am currently working on developing a Virtual Reality simulation platform for nanosystems. So far we are able to compute electron transmission through 2D structures consisting of Carbon, but want to extend the capabilities using Extended Huckel. As, there is no manual for usage of

Re: [Rdkit-discuss] Is it possible to create a reaction SMARTS with dative bonds?

2020-02-12 Thread Greg Landrum
On Wed, Feb 12, 2020 at 4:37 PM Grzegorz Skoraczyński < g.skoraczyn...@mimuw.edu.pl> wrote: > Hi Greg, > > Thanks for your reply. Could you explain more which pattern you use for > GetSubstructMatch? > Doh! Sorry I didn't include that: In [7]: pattern = Chem.MolFromSmarts('[O-]-[#1+]') How

Re: [Rdkit-discuss] Is it possible to create a reaction SMARTS with dative bonds?

2020-02-12 Thread Grzegorz Skoraczyński
Hi Greg, Thanks for your reply. Could you explain more which pattern you use for GetSubstructMatch? How can we guess which product' atoms are mapped to a reaction template? Best GS. śr., 12 lut 2020 o 15:50 Greg Landrum napisał(a): > Hi Grzegorz, > > Nice one! This is a bug in the way

Re: [Rdkit-discuss] Is it possible to create a reaction SMARTS with dative bonds?

2020-02-12 Thread Greg Landrum
Hi Grzegorz, Nice one! This is a bug in the way Reaction SMARTS (or Reaction SMILES for that matter) is parsed. At the moment there's not any way to directly work around the problem. You can add a single bond in the reaction and then manually convert that to a dative bond in the products.

[Rdkit-discuss] Is it possible to create a reaction SMARTS with dative bonds?

2020-02-12 Thread Grzegorz Skoraczyński
Hello, Imagine that we want to simulate an ESI protonation of the molecule. We want to add a positively charged proton to a lone pair of the oxygen atom of the molecule. I tried to create a reaction SMARTS with extended molecule SMARTS definition, but unfortunately, it results in ValueError

Re: [Rdkit-discuss] Inconsistent sanitization of fragments

2020-02-12 Thread Paolo Tosco
Dear Puck, Sure; I'll get back to you later today. Cheers, p. On 12/02/2020 10:03, Puck van Gerwen wrote: Dear all, I am trying to read in SMILES to generate mol objects which I then break into fragments using rwmol.RemoveBond(). Thereafter I want to sanitize the fragments by saturating

[Rdkit-discuss] Inconsistent sanitization of fragments

2020-02-12 Thread Puck van Gerwen
Dear all, I am trying to read in SMILES to generate mol objects which I then break into fragments using rwmol.RemoveBond(). Thereafter I want to sanitize the fragments by saturating with hydrogen. However, I am finding that rdkit often doesn't sanitize the fragments consistently, leaving