How to draw ferrocene?

Could you tell me how to draw ferrocene molecule by Marvin Sketch?

Hello, unfortunatelly in the current version there are no coordinated bonds and you can not really draw a ferrocene/metallocene. We are working hard on coordinated bonds and multicenter Sgroups - they will be included in the next major release.

Thank you very much.

This topic is realted to dative/multicenter bonds, maybe useful for you:





http://www.chemaxon.com/forum/ftopic1412.html





cheers

aruga wrote:

Could you tell me how to draw ferrocene molecule by Marvin Sketch?

Hello, was something missed here? Seems the quiestion did not come through.

In Marvin 5.0, it's possible to draw ferrocene. You will need to look at these instructions to learn how to do it.





It is also possible to draw a pi-allyl complex. (See Cp₂Ti(allyl) below.) I used aromatic bonds to represent the C-C bonds in the allyl group. However, I would like to see a curved line represent the electrons in the allyl group in the picture, rather than the solid-dashed lines that show currently. Is it possible to add that feature to multicenter S groups?

Code:

<?xml version="1.0" ?> <cml> <MDocument>   <MChemicalStruct>     <molecule molID="m1">       <atomArray           atomID="a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17"           elementType="Ti C C C C C X C C C C C X C C C X"           sgroupRef="0 sg1 sg1 sg1 sg1 sg1 0 sg2 sg2 sg2 sg2 sg2 0 sg3 sg3 sg3 0"           x2="-3.5199999809265137 -6.215000152587891 -7.460866481604919 -6.985004064217696 -5.444996240958083 -4.969133823570862 -6.215000152587891 -3.7950000762939453 -5.0408664053109735 -4.565003987923751 -3.024996164664138 -2.549133747276917 -3.7950000762939453 -1.9800000190734863 -0.6463208972454506 -0.6463208972454505 -1.0908806045214625"           y2="1.8700000047683716 4.609992207093841 3.7047756085818406 2.2402281686619485 2.2402281686619485 3.7047756085818406 3.299999952316284 0.3199922452408135 -0.5852243532711867 -2.049771793191079 -2.049771793191079 -0.5852243532711867 -0.9900000095367432 3.4649999141693115 2.6949999141693115 1.1549999141693115 2.4383332475026447"           />       <bondArray>         <bond atomRefs2="a2 a3" order="A" />         <bond atomRefs2="a2 a6" order="A" />         <bond atomRefs2="a3 a4" order="A" />         <bond atomRefs2="a4 a5" order="A" />         <bond atomRefs2="a5 a6" order="A" />         <bond atomRefs2="a7 a1" convention="cxn:coord" />         <bond atomRefs2="a8 a9" order="A" />         <bond atomRefs2="a8 a12" order="A" />         <bond atomRefs2="a9 a10" order="A" />         <bond atomRefs2="a10 a11" order="A" />         <bond atomRefs2="a11 a12" order="A" />         <bond atomRefs2="a13 a1" convention="cxn:coord" />         <bond atomRefs2="a14 a15" order="A" />         <bond atomRefs2="a15 a16" order="A" />         <bond atomRefs2="a17 a1" convention="cxn:coord" />       </bondArray>       <molecule id="sg1" role="MulticenterSgroup" molID="m2"          atomRefs="a2 a3 a4 a5 a6"  center="a7"         />       <molecule id="sg2" role="MulticenterSgroup" molID="m3"          atomRefs="a8 a9 a10 a11 a12"  center="a13"         />       <molecule id="sg3" role="MulticenterSgroup" molID="m4"          atomRefs="a14 a15 a16"  center="a17"         />     </molecule>   </MChemicalStruct> </MDocument> </cml>

We have considered your request. The representation and visualization of the electrons in the allyl group will be different. We plan to solve this problem in Marvin 5.1 or 5.2.





Best regards,


Erika.

Pentadienyl groups (not cyclopentadienyl -- they already work fine) too, please.

Yes, Pentadienyl groups will be represented and visualized similarly.

I want to compliment you on the ease of drawing cyclopentadienyl compounds such as Cp₂Fe and Cp₂TiCl₂ in Marvin 5.2.  I also want to compliment you on the fact that Clean-3D converts both these compounds to their correct 3D structures (linear and tetrahedral, respectively).  One very minor complaint: When the Cp ring is converted to 3D, the circle inside the Cp that represents aromaticity is replaced with five individual aromatic bonds, which are represented by parallel solid and dashed lines.  I would like to see the circle preserved in 3D (though of course it would have to be an oval, depending on the user's perspective).  

Hi Bob,

The perspective drawing of aromatic rings (using ellipses for the display of aromaticity) is among our plans, and will hopefully be released in 5.3 coming this autumn.

Best regards,

Akos