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From: "Scheila" <scheila@ifi.unicamp.br>
To: <CHEMISTRY@ccl.net>
Subject: X-RAY - SUMMARIZED ANSWERS
Date: Thu, 24 Feb 2000 09:02:03 -0300
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 I would like to thanks all the contributions of the  CClers. I'm going to
summarize the answers received.
Scheila

___________________________________________________
QUESTION


I need a help to convert some x-ray data disposed in a paper. This paper
shows the data group, the a, b and c parameters and the atomic coordinates
in the format:
		x		y		z
C1	     7866(3)    3480(6)	    -1818(4)
C2 	     7641(2)    4107(6)	    -2989(4)
C3 	     7896(2)    5715(6)     -3240(4)
:
:
OMEI	     9490(2)    7341(7)	      3845(4)
CMEI	     9845(5)    5894(15)	3795(10)
W1/2*      9230	      923	      2984
W2/2*      8963        2070         3358


*occupancy factor f=0.5


______________________________________________________
ANSWERS


1-
There is a good converter named BABEL or BABELWIN (for
windows). You can convert to many file formats. I don't know
which format you are using but what you need to know is
name of the program you used to get the result you have given
in your mail.

You can find the program at the following site

ftp://laue.chem.ncsu.edu/pub/X-ray/babel/

I hope this will help you.

Dr Ivan Basic
Rudjer Boskovic Institute
Bijenicka 54
HR-10001 Zagreb
CROATIA


2-
a very good and free program is BABEL. You can find a download site at
http://www.eyesopen.com/download/babelwin.zip or at
ftp://www.ccl.net/pub/chemistry/software/UNIX/babel/ (also win and mac and
unix)

It handles over 50 different formats.

Find other related chemistry software in my chemistry software list (>300 in
categories) at

http://www.claessen.net/chemistry/soft_en.html

Regards,

Rolf Claessen

3-
It doesn't appear to be in any particular format, so it's up to you to
put it into some machine readable format, like PDB

Cambridge FDAT format has a rather complicated header, and I don't
recommend it as a starting point, unless you have access to the CCDB
programs and data.

Since it's crystal data, the coords are probably fractional, and have an
implied decimal point in front, e.g. 7866 is really 0.7866 (fractional
coords are mostly less than 1.0).

Rick Venable [rvenable@deimos.cber.nih.gov]

4-
Following is a C program that will convert crystal structure coordinates to
cartesians.  It expects the first line to have the a, b, c axis lengths, and
and the alpha, beta, and gamma angles.  Subsequent lines are an atom label
and fractional coordinates.  I'll include a sample input and output file for
comparison.

--------
acamox.abc -- input file
--------
 6.0690   7.5820   7.3640   84.970   79.660   114.160
 C1          .21800          .25770          .10540
 C2          .32530          .16210         -.03000
 C3          .39920          .15780          .34360
 C4          .14350          .33540          .41450
 H10         .01900          .45500         -.14400
 H21         .29300          .18400         -.14600
 H22         .26100          .01600          .01900
 H23         .50500          .20800         -.04900
 H31         .56300          .26100          .32500
 H32         .34600          .11400          .46200
 H33         .38300          .04700          .29100
 H41              0          .33200          .41000
 H42         .12700          .28800          .53900
 H43         .23600          .47000          .38700
 N1          .22880          .22820          .28880
 N2          .10890          .36370          .06280
 O1          .08840          .36910         -.12780
--------
acamox.xyz -- output file
--------
Unit cell volume = 299.2115
C1          0.662659    1.919812    0.751155
C2          1.431563    1.082369   -0.213801
C3          2.387214    1.538509    2.448738
C4          0.377954    2.859331    2.954022
H10        -1.486982    2.960348   -1.026246
H21         1.014250    1.083006   -1.040500
H22         1.559471    0.135396    0.135408
H23         2.354612    1.375188   -0.349209
H31         3.036481    2.228242    2.316181
H32         2.356760    1.389492    3.292541
H33         2.563208    0.703601    2.073873
H41        -0.488344    2.829957    2.921952
H42         0.589466    2.693343    3.841297
H43         0.485297    3.754710    2.758037
N1          1.062159    1.954256    2.058194
N2         -0.384716    2.597701    0.447557
O1         -0.777815    2.387172   -0.910794
--------
abc2xyz.c
--------
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <math.h>

#define MAXLINLEN 81
#define MAXLABLEN 8
char line [MAXLINLEN+1];
char lab [MAXLABLEN+1];

/*
* prototype for utility routine
*/
char *fgetln (char *s, int n, FILE *str);

/*
* convert crystal structure fractional coordinates to cartesian
*/
int main (int argc, char *argv []) {

  double a, b, c;
  double alpha, beta, gamma;
  double z, x [2], y [3];
  double yy;
  char *tok, *sep = "\t ,";
  double degrad = M_PI / 180.0;
  double vol;

/*
* first line of input is unit cell dimensions and angles in degrees
*/
  fgetln (line, MAXLINLEN, stdin);
  sscanf (line, "%lf %lf %lf %lf %lf %lf", &a, &b, &c, &alpha, &beta,
&gamma);
  alpha *= degrad;
  beta *= degrad;
  gamma *= degrad;

/*
* put 'a' along the z axis
*/
  z = a;

/*
* put 'b' in the zx plane
*/
  x [0] = b * sin (gamma);
  x [1] = b * cos (gamma);

/*
* <c,a> = |c| |a| cos (beta)
* <c,b> = |c| |b| cos (alpha)
* from this 'c' can be determined
*/
  yy = (cos (alpha) - cos (gamma) * cos (beta)) / (sin (gamma) * sin
(beta));
  y [0] = c * sin (beta) * yy;
  y [1] = c * sin (beta) * sqrt (1.0 - yy * yy);
  y [2] = c * cos (beta);

/*
* volume = (a X b) . c
* with the conventions above, (a X b) is along the y axis
*/
  vol = z * x [0] * y [1];
  printf ("Unit cell volume = %8.4lf\n", vol);

/*
* the rest of the file is lines of atom label and fractional coordinates
*/
  while (fgetln (line, MAXLINLEN, stdin)) {
    fprintf (stderr, "%s\n", line);
    (void) strncpy (lab, strtok (line, sep), MAXLABLEN);
    tok = strtok (0, sep); a = atof (tok);
    tok = strtok (0, sep); b = atof (tok);
    tok = strtok (0, sep); c = atof (tok);
    a = a * z + b * x [1] + c * y [2];
    b = b * x [0] + c * y [0];
    c = c * y [1];
    printf ("%-8s %11.6lf %11.6lf %11.6lf\n", lab, a, b, c);
    }

  return 0;
  }

/*
* fgetln
* like fgets but always reads a full line
* newline character is never returned in s
*/
char *fgetln (char *s, int n, FILE *str) {

  int ch, nc;

  nc = 0;
  ch = getc (str);
  while ((ch != EOF) && (ch != '\n') && (nc < n-1)) {
    s [nc++] = (char) ch;
    ch = getc (str);
    }
  s [nc] = 0;

/*
* if EOF and no characters read, return null
*/
  if ((ch == EOF) && (nc == 0)) s = 0;

/*
* if a newline hasn't been read, keep reading
*/
  while ((ch != EOF) && (ch != '\n')) {
    ch = getc (str);
    }

  return s;
  }
--------
Dave Heisterberg

5-
I dont know if this helps. it depends on what software you have at
your disposal. I've solved the same problem by writing a small
spreadsheet program to convert from crystalographic coordinates
to x,y,z's. Unfortunatly the one I built was specific to the molecule
I was working on but it should be pretty trivial, its just a matrix
multiplication. The I used Gaussian's newzmat to convert this file
to pdf which spartan could then read.
I dont know if this helps
Larry Cuffe

6-
A  FORTRAN PROGRAM

C    program convert

C   This program is able to convert fractional X-Ray coordinates
C   to cartesian orthonormal coordinates


C   Eduardo Lemos de Sa

      REAL*8 AA, BB, CC, FACTOR, ALPHA, BETHA, GAMMA
      REAL*8 XX, YY, ZZ, XXCART, YYCART, ZZCART
      REAL*8 PI
      INTEGER NCOUNT
      CHARACTER TITLE*80, ATOM*5
C
C  FACTOR IS THE NUMBER THAT SHOULD MULTIPLIED THE FRACTIONAL COORDINATE

      READ(5,10) TITLE
 10   FORMAT(A80)
      READ(5,*) AA, BB, CC, FACTOR
 20   FORMAT(4(D14.7))
      READ(5,*) ALPHA, BETHA, GAMMA
 30   FORMAT(3(F10.3))
      READ(5,*) NCOUNT
 40   FORMAT(I4)

C  SETS THE PI (3.141592..) VALUE
      PI=4*ATAN(1.0D0)
C
C  CONVERT THE ANGLE (DEG - > RADIAN)

      ALPHA=ALPHA*PI/180.0D0
      BETHA=BETHA*PI/180.0D0
      GAMMA=GAMMA*PI/180.0D0

      WRITE(6,40) NCOUNT
      WRITE(6,10) TITLE
C
 150  FORMAT(A2, 3F10.5)
C  BEGINS THE READ DATA INPUT (TITLE)

      DO 100 J=1,NCOUNT

         READ(5,150) ATOM, XX, YY, ZZ
         XX=XX*AA*FACTOR
         YY=YY*BB*FACTOR
         ZZ=ZZ*CC*FACTOR
         XXCART=XX+YY*COS(GAMMA)+ZZ*COS(BETHA)
         YYCART=YY*SIN(GAMMA)-ZZ*SIN(BETHA)*COS(ALPHA)
         ZZCART=ZZ*SIN(BETHA)*SIN(ALPHA)
         WRITE(6,150) ATOM, XXCART, YYCART, ZZCART

 100  CONTINUE

      STOP
      END




 INPUT MODEL
Dados provenientes do raios-X de Giovana - dimero Ti
10.8611 10.5932 15.3648 1.000D-4
90.000 102.826 90.000
4
ti   1139.0     967.0      346.0
cl   3057.0     546.0     1406.0
o     388.0    -794.0      596.0
o     304.0    1635.0     1170.0


OUTPUT MODEL
    4
Dados provenientes do raios-X de Giovana - dimero Ti
ti   1.11906   1.02436    .51836
cl   2.84067    .57839   2.10639
o     .21812   -.84110    .89289
o    -.06889   1.73199   1.75283


EDUARDO LEMOS DE SÁ




From chemistry-request@server.ccl.net  Thu Feb 24 11:01:51 2000
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Date: Thu, 24 Feb 2000 16:54:38 +0100
From: 320058217573-0001@t-online.de (Ulrich Essmann)
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Dear CCL'ers,

I have to give a presentation on 'Practical Molecular Modelling'
on a college level. I would like to present an example which can be
performed as a lab exam on a PC. To show that molecular modelling
can produce new insights, the result of this exercise should not be
completely trivial. Is this too much to ask for ?
Any suggestions or pointers are welcome.

Thanks in advance,

Ulrich Essmann

e-mail: Ulrich.Essmann@gmx.de



From chemistry-request@server.ccl.net  Thu Feb 24 10:38:11 2000
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Date: Thu, 24 Feb 2000 16:31:21 +0200
From: Mike Peleah <mike@mnc.md>
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To: gamess-users@Glue.umd.edu
Subject: Ferrocene in GAMESS problem
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+======================---------------- --- -- -  -   -     -        .
| Dear gamess-users,
:
.

I  tried to calculate ferrocene [Fe(C5H5)2] in PC GAMESS (v.5.4.b1732)
using  TZV  basis  for  Fe  and  STO-6 basis for C and H, but received
warning  on partial linear dependence in atomic basis. The same result
I  obtained  using  MIDI  basis  for all atoms. Could somebody tell me
where I am wrong?

Here is part output:
--------------------------- 8< --------------------------- 8< ---------------------------
          ******************************************************
          *            GAMESS VERSION =  6 MAY 1998            *
          ********Intel x86 (WIN32, OS/2, DOS32) VERSION********
          *      PC GAMESS version 5.4, build number 1732      *
          *   Compiled on    Wednesday, 01-12-1999, 15:10:55   *
          ******************************************************

 Pentium    / Win32  PC GAMESS version running under Windows 9x
 Running on Intel CPU:  Family  5, Model  4, Stepping  3
 CPU Features        :  MMX            
 Data cache sizes    :  L1 16 KB, L2    0 KB

[......skip......]
 INPUT CARD>!
 INPUT CARD>!                                                                               
 INPUT CARD> $CONTRL SCFTYP=RHF                                                             
 INPUT CARD>         RUNTYP=ENERGY                                                          
 INPUT CARD>         COORD=UNIQUE                                                           
 INPUT CARD>         EXETYP=RUN                                                             
 INPUT CARD> $END                                                                           
 INPUT CARD> $GUESS  GUESS=HUCKEL $END                                                      
 INPUT CARD> $DATA                                                                          
 INPUT CARD>.Ferrocene..........[D5h]......                                                 
 INPUT CARD>DNH      5                                                                      
 INPUT CARD>                                                                                
 INPUT CARD>FE         26.0      0.0000000000      0.0000000000      0.0000000000           
 INPUT CARD>   TZV                                                                          
 INPUT CARD>                                                                                
 INPUT CARD>C           6.0      1.2147000000      0.0000000000      1.6600000000           
 INPUT CARD>   STO    6                                                                     
 INPUT CARD>                                                                                
 INPUT CARD>H           1.0      2.3317000000      0.0000000000      1.6600000000           
 INPUT CARD>   STO    6                                                                     
 INPUT CARD>                                                                                
 INPUT CARD> $END                                                                           
[......skip......]

                    * * * WARNING * * *
 ------------------------------------------------------------------------------
 THE OVERLAP MATRIX HAS    1 EIGENVALUES BELOW 1.0E-05.
 THE SMALLEST OF THESE IS 7.42817E-06.
 THIS INDICATES A PARTIAL LINEAR DEPENDENCE IN YOUR ATOMIC BASIS.

 TO OBTAIN SCF CONVERGENCE MAY REQUIRE
 MORE ACCURATE INTEGRAL EVALUATION (INTTYP=HONDO, ICUT=11, ITOL=30 IN $CONTRL),
 MORE ACCURATE DIRECT SCF FOCK MATRIX FORMATION (FDIFF=.FALSE. IN $SCF), OR
 CHANGING CONVERGERS (DIIS=.T. SOSCF=.F. IN $SCF).

 EIGENVALUES BELOW 1.0D-07 PROBABLY WON'T CONVERGE.
 EIGENVALUES BETWEEN 1.0D-07 AND 1.0D-06 MAY REQUIRE
 LOOSENING OF -NCONV- DENSITY CONVERGENCE IN $SCF.

 THE OVERALL DEGREES OF AOS LINEAR INDEPENEDENCE ARE:
   0.9157       -    C  11  S,   SHELL  40,   AO   98
[......skip......]
   0.1055E-04   -    FE  1  S,   SHELL   9,   AO    9

 YOU MAY CONSIDER DROPPING ONE OR MORE AOS, STARTING FROM THE END OF THIS LIST.

[......skip......]
--------------------------- 8< --------------------------- 8< ---------------------------


Best regards,
 Mike                          mailto:mike@mnc.md
                                                                     .
                                                                     :
                                                                     |
.        -     -   -  - -- --- ----------------======================+




From chemistry-request@server.ccl.net  Thu Feb 24 10:59:25 2000
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From: "density" <density@ruca.ua.ac.be>
To: <chemistry@ccl.net>
Subject: International Conference "Density functional theory ...", Antwerpen, June 18-20, 2000
Date: Thu, 24 Feb 2000 15:56:00 +0100


Dear Madam,
Dear Sir,

May I ask you to circulate the following second announcement of the
International
Conference on "Density functional theory and its applications to
materials", to be held at the University of Antwerp from June 8 till 10,
2000,  to the members of your mailing list.

Thanks in advance,

Best regards,


Vic

Vic Van Doren
Department of Physics
University of Antwerp
Groenenborgerlaan 171
B-2020 Antwerpen, Belgium
Tel. +32/3/2180317
Fax +32/3/2180318
e-mail: vandoren@ruca.ua.ac.be




  Second Announcement of the International Conference on
                               
  Density Functional Theory and its Applications to Materials
                               
                 University of Antwerp, Belgium
                               
                      June 8 till 10, 2000
                               
                               


A WEBSITE FOR THE CONFERENCE HAS NOW BEEN OPENED AT:

 http://www.ruca.ua.ac.be/dft2000

Contributions

Applications are invited for the above International Conference. Any
density functional studies relevant to materials science may be
proposed, whether on three-dimensional materials (e.g. emiconductors and
metallic alloys), or on low-dimensional systems (e.g. polymers or 2D
electron gases in heterojunctions). Calculations on medium- or
large-sized clusters will also be considered, if they clearly throw
light on the understanding of bulk  or surface properties of materials.

The following scientists havealready  accepted the invitation to
lecture:
N.W. Ashcroft  (Cornell University, Ithaca, U.S.A.)
G.B. Bachelet (University of Rome, Italy)
A. Baldereschi (Swiss Federal Institute of Technology, Lausanne,
Switzerland)
R. Car (Princeton University, U.S.A.)
T.C. Collins (Oklahoma State University, Stillwater, U.S.A.)
J.T. Devreese (University of Antwerp, Belgium)
R.W. Godby (University of York, U.K.)
E.K.U. Gross (University of Wurzburg, Germany)
O. Gunnarsson (Max-Planck Institute, Stuttgart, Germany)
J. Krieger (Brooklyn College of CUNY, U.S.A.)
J. Ladik (University of Erlangen, Germany)
M. Levy (Tulane University, U.S.A.)
S. Louie (University of California, Berkeley, U.S.A.)
N.H. March (University of Oxford, U.K. - presently at: University of
Antwerp, Belgium)
J.L. Martins (INESC, Lisbon, Portugal)
J. Mintmire (Naval Research Laboratories, Washington, U.S.A.)
M. Payne (University of Cambridge, U.K.)
F. Peeters (University of Antwerp, Belgium)
J.P. Perdew (Tulane University, New Orleans, U.S.A.)
G. Straub (Los Alamos National Laboratory, U.S.A.)
D. Wallace (Los Alamos National Laboratory, U.S.A.)

Persons whose applications are accepted will be encouraged to offer one
hour poster presentations during the meeting.

All participants (maximum 150), except students, are required to pay a
registration fee of 250 EURO/$ (10000 BEF), which gives entitlement to
conference documentation and proceedings, coffee and lunch,
transportation to lecture hall and social events.
The student fee is 125 EURO/$ (5000 BEF). A limited number of grants
will be available.

For further information please contact: V.E. Van Doren, Department of
Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen,
Belgium, tel. +32/3/2180317, fax +32/3/2180318, e-mail:
density@ruca.ua.ac.be


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From: lnl@novo.dk (Leif Norskov)
Message-Id: <200002241213.NAA67627@bisse.novo.dk>
To: yz0@hotmail.com
Subject: Re: CCL:Three dimensional FFT
Cc: CHEMISTRY@ccl.net

On Sun, 20 Feb 2000 02:18:53 EST "Y Z" <yz0@hotmail.com> asked:

  > Are there any way to calculate a (256,256,256) order
  > DOUBLE COMPLEX FFT in FORTRAN77? I tried to do the
  > following subrouitine but cannot pass the compiling.

Sorry if this comes a bit late, but couldn't you simply
raise the system limit:

	% f77 -c -o /tmp/fft /tmp/fft.f 
	"/tmp/fft.f": Warning: Stack frame size (268436320) larger
		than system limit (67108864)
	% limit stacksize 270M
	% f77 -c -o /tmp/fft /tmp/fft.f
	%

(this is from tcsh under IRIX 6.5.6f on an SGI Origin200)

/Leif Norskov
 Novo Nordisk A/S
 Copenhagen
 Denmark
 LNL@novo.dk

From chemistry-request@server.ccl.net  Thu Feb 24 11:50:14 2000
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Date: Thu, 24 Feb 2000 15:45:46 +0000
From: Stuart Green <S.M.Green@chem.leeds.ac.uk>
To: chemistry@ccl.net, help@gaussian.com
Subject: G98, Linda and node scratch
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We are attempting to run a MP2 calculation with Gaussian98 with Linda
on our 10-processor Linux cluster.

When the job is run on a single processor we prevent the scratch files
from exceeding the 2GB file limit with the %rwf option. The job runs but
is slow and we want to use our parallel capability.

On specifying %nprocl=10 (with the same %rwf option) the jobs starts
okay does its parallel stuff reaches l905 then dies because a scratch
file local to one of the nodes now exceeds 2GB.

Is there anyway of controlling the file size of these local scratch files?

Thanks,

Stuart

-- 
Stuart M. Green                               S.M.Green@chem.leeds.ac.uk
School of Chemistry
University of Leeds                           Tel +44 113 233 6596
Leeds, LS2 9JT, England                       Fax +44 113 233 6565

