Barney,

Jmol wasn't reading that column; it is now (11.3.50), so look for an 
update. I've registered C-11 as slightly ligher in color than C-12. The 
way you select these is with an underscore ahead of the isotope number:

select _11C
select _13C

For deuterium and tritium you can also use:

select deuterium
select _2H
select D
select trititum
select _3H
select T

And you can color the elements this way to your liking, as well:

color _11C green

Bob Hanson



Barny Shergold wrote:

>Hi,
>
>I'm new to the mailing list and I would really appreciate some help. My
>client uses a chemical that has many carbon atoms in it and one of them
>is actually Carbon-11. When I use and SDF file (show below) it models
>all the carbon atoms the same. Is there any way that Jmol can show an
>isotope? I just need that one Carbon atom to look a little different.
>
>If you notice the 6th Carbon atom down it has a -1 next in the 5th
>column, this is the carbon atom in question and I assume the -1 is to
>indicate it is Carbon-11 (ie 12 - 1 = 11)
>
>Is there anything I can do to get that Carbon at atom to announce its
>difference?
>
>Any help would be much appreciated as this is part of my degree
>dissertation.
>
>Kind Regards
>
>Barny Shergold
>
>
>
>
>450825
>  -OEChem-11290711172D
>
> 46 48  0     1  0  0  0  0  0999 V2000
>    3.4030   -2.0000    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0
>    2.5369    0.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
>    3.4030    2.0000    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690   -0.5000    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690    2.5000    0.0000 C   0  0  3  0  0  0  0  0  0  0  0  0
>    4.2690    3.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350    2.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    3.4030    1.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690    0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    2.5369    2.5000    0.0000 C  -1  0  0  0  0  0  0  0  0  0  0  0
>    5.1350    4.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.0010   -0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.0010    0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350   -1.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350    1.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350   -2.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.8950   -1.0347    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.8950    1.0347    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    7.8010   -0.5208    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    7.8010    0.5208    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690   -2.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.0010   -2.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690   -3.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    6.0010   -3.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350   -4.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>    4.2690    1.8800    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    3.6584    3.3923    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    4.0569    4.0826    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    4.8250    1.4631    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.6719    1.6900    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.4450    2.5369    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    2.0000    2.8100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    2.8469    3.0369    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    2.2269    1.9631    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.4450    3.4631    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    4.8250    4.5369    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.6719    4.3100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350    1.6200    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    6.8878   -1.6546    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    6.8878    1.6546    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    8.3368   -0.8329    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    8.3368    0.8329    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    6.5380   -2.1900    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    3.7321   -3.8100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    6.5380   -3.8100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>    5.1350   -4.6200    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
>  1 21  1  0  0  0  0
>  2  8  2  0  0  0  0
>  3  5  1  0  0  0  0
>  3  8  1  0  0  0  0
>  3 10  1  0  0  0  0
>  4  9  1  0  0  0  0
>  4 14  2  0  0  0  0
>  5  6  1  0  0  0  0
>  5  7  1  0  0  0  0
>  5 26  1  0  0  0  0
>  6 11  1  0  0  0  0
>  6 27  1  0  0  0  0
>  6 28  1  0  0  0  0
>  7 29  1  0  0  0  0
>  7 30  1  0  0  0  0
>  7 31  1  0  0  0  0
>  8  9  1  0  0  0  0
>  9 15  2  0  0  0  0
> 10 32  1  0  0  0  0
> 10 33  1  0  0  0  0
> 10 34  1  0  0  0  0
> 11 35  1  0  0  0  0
> 11 36  1  0  0  0  0
> 11 37  1  0  0  0  0
> 12 13  1  0  0  0  0
> 12 14  1  0  0  0  0
> 12 17  2  0  0  0  0
> 13 15  1  0  0  0  0
> 13 18  2  0  0  0  0
> 14 16  1  0  0  0  0
> 15 38  1  0  0  0  0
> 16 21  1  0  0  0  0
> 16 22  2  0  0  0  0
> 17 19  1  0  0  0  0
> 17 39  1  0  0  0  0
> 18 20  1  0  0  0  0
> 18 40  1  0  0  0  0
> 19 20  2  0  0  0  0
> 19 41  1  0  0  0  0
> 20 42  1  0  0  0  0
> 21 23  2  0  0  0  0
> 22 24  1  0  0  0  0
> 22 43  1  0  0  0  0
> 23 25  1  0  0  0  0
> 23 44  1  0  0  0  0
> 24 25  2  0  0  0  0
> 24 45  1  0  0  0  0
> 25 46  1  0  0  0  0
>M  ISO  1  10  11
>M  END
>
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>


-- 
Robert M. Hanson
Professor of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr


If nature does not answer first what we want,
it is better to take what answer we get. 

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900



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