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Administrator<br />

The field value for Carbon 6 from the example file<br />

is included in parentheses for reference:<br />

1. Line 1 is a standard header line for MSI<br />

MolFile format files.<br />

2. Line 2 normally indicates the application which<br />

created the file.<br />

3. Line 3 is the header for the File format version<br />

number section.<br />

4. Line 4 indicates the file format version<br />

number. The format for this field is<br />

YY.MMDD.<br />

5. Line 5 is the header for the File update version<br />

number section.<br />

6. Line 6 indicates the file update version number.<br />

The format for this field is YY.MMDD.<br />

7. Line 7 is the header for the molecule name<br />

section.<br />

8. Line 8 contains the field molecule name. This<br />

field contains either the file name, or<br />

“Undefined Name”.<br />

9. Line 9 is the header for the empirical formula.<br />

10. Line 10 contains the empirical formula field.<br />

This field contains either the empirical formula<br />

or “Undefined Empirical Formula”.<br />

11. Lines 11–24 each contains information<br />

concerning conversions from 3D to 2D.<br />

12. Line 25 is the header for the Global display<br />

attributes section.<br />

13. Line 26 contains 5 fields describing the global<br />

display attributes: Line thickness (1), font style<br />

(0), type face (1), type size (12), font (256).<br />

These values are specific to the platform that is<br />

generating the file.<br />

14. .Line 27 contains the header for the Atom Lists<br />

section.<br />

15. Line 28 contains a listing of all the possible<br />

fields for the atom list section. When the file is<br />

created using Chem3D Pro the following fields<br />

are used: Atom#,Lbl, Type, and x,y,z.<br />

16. Lines 29–47 each contains 28 fields describing<br />

information about each of the atoms in the<br />

structure: the first field is the atom number (6),<br />

the second field is the atom label (C), the third<br />

field is the atom type (10), the fourth field and<br />

fifth fields contain 2D coordinates, and contain<br />

zeros when the file is created using Chem3D<br />

Pro, the sixth field is the X coordinate (-0.113)<br />

and the fifth field is the Y coordinate (1.005),<br />

the sixth field is the Z coordinate (-0.675), the<br />

seventh through fifteenth fields are ignored<br />

and contain zeros when the file is created by<br />

Chem3D Pro, the sixteenth field is, again, the<br />

atom label (C), the eighteenth field is, again, the<br />

atom number (6), the nineteenth field is the<br />

segment field, the twentieth field is the<br />

coordination field, the twenty first field is<br />

ignored, the twenty-second field is called the<br />

saturation field: if the atom is attached to any<br />

single, double or delocalized bonds this field is<br />

1 (not saturated) otherwise this field is 0. The<br />

twenty-third through the twenty-sixth fields are<br />

ignored and contain zeros when the file is<br />

created using Chem3D Pro, the twentyseventh<br />

field is, again, the atom label (C).<br />

NOTE: Atom types in the Molecular Simulations<br />

MolFile format are user-definable. For more<br />

information, see “Editing File Format Atom Types”<br />

on page 619.<br />

17. Line 48 contains the header for the Bond List<br />

section.<br />

18. Line 49 contains a listing of all the possible<br />

fields for the bond list section. When the file is<br />

created by Chem3D Pro the following fields<br />

are used: Bond#, Bond_type, atom 1, atom 2<br />

and cis/trans and Qorder.<br />

19. Lines 50–68 each contain 4 fields describing<br />

information about each of the bonds in the<br />

structure: the first field is the internal bond<br />

number (6), the second field is the bond type<br />

(1), the third and fourth fields are the atom<br />

634• File Formats <strong>CambridgeSoft</strong><br />

MSI MolFile

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