SUMMARY OF  PM7 CALCULATION, Site No: 23746

                                                       MOPAC2016 (Version: 21.053M)
                                                       Wed Feb 24 00:09:26 2021
                                                       No. of days remaining = 364

           Empirical Formula: Fe18 Br36  =    54 atoms

 MERS=(2,3,3)  CHARGE=0  OUTPUT THREADS=1 PM7 GRADIENTS  NOTXT            EF
 Iron(ii) dibromide (FeBr2) (ICSD 409571)
 h=-59.7 hr=crc


     GEOMETRY OPTIMISED USING EIGENVECTOR FOLLOWING (EF).
     SCF FIELD WAS ACHIEVED

          HEAT OF FORMATION       =      -1336.23468 KCAL/MOL =   -5590.80590 KJ/MOL
          H.o.F. per unit cell    =        -74.23526 KCAL, for 18 unit cells, unit cell = Fe1 Br2
          TOTAL ENERGY            =     -15245.39023 EV
          ELECTRONIC ENERGY       =  -53533304.42259 EV
          CORE-CORE REPULSION     =   53518059.03236 EV

          VOLUME OF UNIT CELL     =         64.095 CUBIC ANGSTROMS

          DENSITY                 =          5.587 GRAMS/CC
                              A   =          5.616 ANGSTROMS
                              B   =          3.632 ANGSTROMS
                              C   =          3.634 ANGSTROMS
                            ALPHA =        120.144 DEGREES
                            BETA  =         89.644 DEGREES
                            GAMMA =         90.259 DEGREES


          VOLUME OF CLUSTER       =       1153.71469 ANGSTROMS**3 =  694.783 CM**3/MOLE

          GRADIENT NORM           =          4.60996 = 0.62734 PER ATOM
          NO. OF FILLED LEVELS    =        198
          IONIZATION POTENTIAL    =         10.250158 EV
          HOMO LUMO ENERGIES (EV) =        -10.250 -2.105
          MOLECULAR WEIGHT        =       3881.7900
           Pressure required to constrain translation vectors
           Tv(  55)  Pressure:   0.12 GPa
           Tv(  56)  Pressure:   0.17 GPa
           Tv(  57)  Pressure:   0.09 GPa
          SCF CALCULATIONS        =         10
          WALL-CLOCK TIME         = 15 MINUTES AND 41.023 SECONDS
          COMPUTATION TIME        = 15 MINUTES AND 34.034 SECONDS


          FINAL GEOMETRY OBTAINED
 MERS=(2,3,3)  CHARGE=0  OUTPUT THREADS=1 PM7 GRADIENTS  NOTXT            EF
 Iron(ii) dibromide (FeBr2) (ICSD 409571)
 h=-59.7 hr=crc
 Fe     0.30033191 +1   0.02663410 +1   0.01620713 +1
 Br    -1.45751583 +1  -1.80975437 +1   0.04572781 +1
 Br     0.71310202 +1  -0.47301698 +1  -2.44139678 +1
 Fe     5.37930077 +1  -0.43237902 +1  -2.32950775 +1
 Br     3.62347528 +1  -2.27012837 +1  -2.30295782 +1
 Br     5.79535682 +1  -0.92952393 +1  -4.78676770 +1
 Fe     1.61585619 +1  -1.20334264 +1   3.17042649 +1
 Br    -0.14158548 +1  -3.03958880 +1   3.20013049 +1
 Br     2.03001646 +1  -1.69867942 +1   0.71220738 +1
 Fe     6.69707224 +1  -1.66014855 +1   0.82311453 +1
 Br     4.94098272 +1  -3.49683745 +1   0.85030082 +1
 Br     7.11368751 +1  -2.15496728 +1  -1.63500337 +1
 Fe     2.93311716 +1  -2.43552402 +1   6.32421381 +1
 Br     1.17361213 +1  -4.27042314 +1   6.35285732 +1
 Br     3.34787323 +1  -2.92768366 +1   3.86567723 +1
 Fe     8.01513697 +1  -2.89050653 +1   3.97827879 +1
 Br     6.25727258 +1  -4.72636352 +1   4.00448390 +1
 Br     8.42926592 +1  -3.38383053 +1   1.52108812 +1
 Fe     0.32732727 +1   3.58374122 +1  -0.70861853 +1
 Br    -1.43353381 +1   1.75001459 +1  -0.67821243 +1
 Br     0.74002770 +1   3.08428674 +1  -3.16588822 +1
 Fe     5.40640259 +1   3.12871711 +1  -3.05611706 +1
 Br     3.64819611 +1   1.29182208 +1  -3.02457149 +1
 Br     5.82142215 +1   2.62970987 +1  -5.51344077 +1
 Fe     1.64546373 +1   2.35647343 +1   2.44365594 +1
 Br    -0.11447216 +1   0.52266606 +1   2.47391506 +1
 Br     2.06120987 +1   1.86115528 +1  -0.01448108 +1
 Fe     6.72147573 +1   1.89841207 +1   0.09757717 +1
 Br     4.96359341 +1   0.06205015 +1   0.12917305 +1
 Br     7.13689209 +1   1.40287805 +1  -2.35946439 +1
 Fe     2.96154340 +1   1.12592299 +1   5.60031308 +1
 Br     1.20210348 +1  -0.70919982 +1   5.62845452 +1
 Br     3.37587129 +1   0.63178041 +1   3.14260973 +1
 Fe     8.04265415 +1   0.66953380 +1   3.25010568 +1
 Br     6.28441142 +1  -1.16688703 +1   3.28216716 +1
 Br     8.45480339 +1   0.17421133 +1   0.79192422 +1
 Fe     0.35075031 +1   7.14617635 +1  -1.43339032 +1
 Br    -1.40520347 +1   5.30890103 +1  -1.40195119 +1
 Br     0.76515468 +1   6.65014167 +1  -3.89114916 +1
 Fe     5.43510358 +1   6.69038704 +1  -3.78320803 +1
 Br     3.67733301 +1   4.85561914 +1  -3.75301094 +1
 Br     5.84719940 +1   6.19230449 +1  -6.24202777 +1
 Fe     1.66804472 +1   5.91809892 +1   1.71937153 +1
 Br    -0.08731201 +1   4.08120544 +1   1.74917630 +1
 Br     2.08387916 +1   5.42053040 +1  -0.73831328 +1
 Fe     6.75002654 +1   5.46166672 +1  -0.62851888 +1
 Br     4.99229802 +1   3.62598957 +1  -0.59834917 +1
 Br     7.16524271 +1   4.96378516 +1  -3.08514618 +1
 Fe     2.98558751 +1   4.68820607 +1   4.87230745 +1
 Br     1.22958923 +1   2.85119214 +1   4.90246127 +1
 Br     3.40085831 +1   4.19437763 +1   2.41341072 +1
 Fe     8.06737568 +1   4.23186795 +1   2.52325278 +1
 Br     6.31036157 +1   2.39444475 +1   2.55584832 +1
 Br     8.47904091 +1   3.73311872 +1   0.06516319 +1
 Tv    10.16737850 +1  -0.95481954 +1  -4.67880076 +1
 Tv     3.95275207 +1  -3.68575506 +1   9.45986961 +1
 Tv     0.07704367 +1  10.68220842 +1  -2.17520432 +1