gbranden pushed a commit to branch master
in repository groff.
commit 86f816985f3998caba53c6a5bafd7ee6d03b4e98
Author: Norwid Behrnd <[email protected]>
AuthorDate: Tue Dec 9 22:21:47 2025 +0100
[chem]: Correct molecular composition of ATP.
* contrib/chem/examples/atp.chem: The previous depiction of the ATP
molecule omitted a nitrogen atom in the pyrimidine moiety.
Fixes <https://savannah.gnu.org/bugs/?67792>.
Signed-off-by: Norwid Behrnd <[email protected]>
---
contrib/chem/ChangeLog | 7 +++++++
contrib/chem/examples/atp.chem | 8 +++++---
2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/contrib/chem/ChangeLog b/contrib/chem/ChangeLog
index 390460e27..a1c72917b 100644
--- a/contrib/chem/ChangeLog
+++ b/contrib/chem/ChangeLog
@@ -1,3 +1,10 @@
+2025-12-09 Norwid Behrnd <[email protected]>
+
+ * examples/atp.chem: The previous depiction of the ATP molecule
+ omitted a nitrogen atom in the pyrimidine moiety.
+
+ Fixes <https://savannah.gnu.org/bugs/?67792>.
+
2024-12-21 G. Branden Robinson <[email protected]>
* chem.am (all): Drop seemingly spurious use of target.
diff --git a/contrib/chem/examples/atp.chem b/contrib/chem/examples/atp.chem
index 738c4da3c..546a37555 100644
--- a/contrib/chem/examples/atp.chem
+++ b/contrib/chem/examples/atp.chem
@@ -9,7 +9,8 @@ atp.chem:
# Found at http://www.chemindustry.com/apps/chemicals.
# Copyright (C) 2006-2020 Free Software Foundation, Inc.
-# Written by Bernd Warken <[email protected]>.
+# Written by Bernd Warken <[email protected]>,
+# corrected missing nitrogen atom by Norwid Behrnd <[email protected]>.
# This file is part of 'chem', which is part of 'groff'.
@@ -25,8 +26,9 @@ atp.chem:
# The GPL2 license text is available in the internet at
# <http://www.gnu.org/licenses/gpl-2.0.html>.
-R1: ring5 pointing left double 1,2 3,4 put N at 2 put N at 5
-B: benzene put N at 2 with .V6 at R1.V3 with .V5 at R1.V4
+R1: ring5 pointing left double 1,2 put N at 2 put N at 5
+B: ring6 put N at 2 put N at 4 double 1,2 3,4 5,6 \
+ with .V6 at R1.V3 with .V5 at R1.V4
bond up ; NH2
backbond 170 length .7 from R1.V5
R2: ring5 pointing down with .V2 put O at 1
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