home *** CD-ROM | disk | FTP | other *** search
-
- (Use F5 to toggle window size)
-
- CRYSTAL is a 3 dimensional molecular modeling program that generates
- computer models of ionic crystal structures. This program is a
- companion program with CHEMICAL and CHEMVIEW.
-
- To display the example data files first use the Read command to
- read a text description from the disk. Then use the View command
- to display this crystal. While viewing the crystal use the cursor
- keys to change the direction of rotation. The X,Y, and Z keys
- change the view be along the corresponding axis. The space bar
- returns to the menu screen.
-
- New crystal structures are easiest to make by modifying an existing
- file. The F1 key gives help for using the editor, and the shift F1
- key shows this help file. The commands and atoms/ions allowed are
- listed below (all commands must end in a period).
-
- { COMMENT }
- Color __ atoms Red|Pink|Light_Pink|Orange|Gold|Yelow|Mint_Green
- Forrest_Green|Green|Light_Green|Light_Blue
- Violet_Blue|Blue_Violet|Blue|White.
- Duplicate cells.
- Make atoms __ scale.
- Make cube dimensions __ A|pm.
- Make lattice dimensions __ __ __ A|pm.
- Make lattice angles __ __ __ degrees.
- Place __ atom|atoms at center|corner|edge|face of cube|lattice.
- Place __ atoms at (__,__,__), (__,__,__), ... .
- Place __ atoms on body centered cube.
- Place __ atoms on cubic closest packing.
- Place __ atoms on face centered cube."),
- Place __ atoms on a hexagonal lattice.").
-
- Ac 2.0 Ac3+ 1.11 Ag 1.44 Ag+ 0.97 Al 1.43
- Al3+ 0.57 Am3+ 1.00 Am4+ 0.85 As 1.21 As3+ 0.69
- As3- 1.99 As5+ 0.47 At 1.40 Au 1.44 Au+ 1.37
- B 0.88 B3+ 0.2 Ba 2.17 Ba2+ 1.38 Be 1.11
- Be2+ 0.31 Bi 1.46 Bi3+ 1.20 Bi3- 2.217 Bi5+ 0.74
- Br 1.14 Br- 1.97 Br7+ 0.39
- C 0.77 C4+ 0.15 C4- 2.60 Ca 1.97 Ca2+ 1.06
- Cd 1.49 Cd2+ 0.99 Cl 0.99 Cl- 1.81 Cl7+ 0.26
- Co 1.26 Co2+ 0.78 Co3+ 0.65 Cr 1.25 Cr2+ 0.80
- Cr3+ 0.70 Cr6+ 0.52 Cs 2.62 Cs+ 1.70 Cu 1.28
- Cu+ 0.96 Cu2+ 0.72
- F 0.64 F- 1.36 F7 0.07 Fe 1.26 Fe2+ 0.80
- Fe3+ 0.67
- Ga 1.22 Ga3+ 0.65 Ge 1.22 Ge2+ 0.65 Ge4+ 0.55
- H- 2.08 Hg 1.55 Hg2+ 1.12
- I 1.33 I- 2.16 I7+ 0.50 In 1.62 In3+ 0.95
- Ir 1.35 Ir4+ 0.66
- K 2.31 K+ 1.33 Kr 1.69
- La 1.88 La3+ 1.07 Li 1.52
- Mg 1.60 Mg2+ 0.75 Mn 1.29 Mn2+ 0.83 Mn3+ 0.52
- Mn7+ 0.46 Mo 1.36 Mo4+ 0.68 Mo6+ 0.65
- N 0.70 N3- 1.56 N5+ 0.11 Na 1.86 Na 1.86
- Na+ 1.00 Ne 1.12 Ni 1.24 Ni2+ 0.74 Np3+ 1.02
- Np4+ 0.88
- O 0.66 O2- 1.4 O6+ 0.09 Os 1.34 Os4+ 0.65
- P 1.1 P3- 1.92 P5+ 0.34 Pb 1.75 Pd 1.38
- Pd2+ 0.50 Po 1.4 Po4+ 0.9 Pt 1.38 Pt2+ 0.52
- Pt4+ 0.55 Pu3+ 1.01 Pu4+ 0.86 Ra 2.2 Ra2+ 1.42
- Rb 2.44 Re 1.37 Re6+ 0.52 Rh 1.34 Rh3+ 0.75
- Rh4+ 0.65 Ru 1.33 Ru4+ 0.60
- S 1.04 S2- 1.855 S6+ 0.29 Sb 1.41 Sb3+ 0.90
- Sb3- 2.17 Sb5+ 0.62 Sc 1.6 Sc3+ 0.83 Se 1.17
- Se- 1.96 Se4+ 0.40 Se6+ 0.42 Si 1.17 Si4+ 0.40
- Sn 1.4 Sn2+ 1.02 Sn4+ 0.65 Sr 2.15 Sr2+ 1.18
- Tc 1.3 Tc4+ 0.50 Te 1.37 Te2- 2.21 Te4+ 0.84
- Te6+ 0.56 Th4+ 0.95 Ti 1.46 Ti2+ 0.76 Ti4+ 0.60
- Tl 1.71
- U3+ 1.04 U4+ 0.89
- V 1.31 V2+ 0.82 V3+ 0.75 V5+ 0.59
- W 1.37 W4+ 0.68 W6+ 0.65
- Xe 1.9
- Y 1.80 Y3+ 0.91
- Zn 1.33 Zn2+ 0.75 Zr 1.57 Zr4+ 0.80
-
-
- CRYSTAL is written in Turbo PROLOG version 2.0 and Turbo C. The
- Turbo PROLOG toolbox is also used.
-
- CHEMICAL, CHEMVIEW, and CRYSTAL are placed in the Public Domain and
- may be freely copied and distributed. The latest version of these
- programs with source code can be obtained from the author for $20
- (for all three). Updates are $10 for registered users. Add $5 for
- overseas shipping and $3 for 3 1/2 inch disks. Version 4.1 of
- PLANETS (an astronomy program that shows planetary motion) is
- available for $10. The source code is not for public distibution
- and is only available from the author.
-
- Larry Puhl
- 6 Plum Court
- Sleepy Hollow, Ill. 60118