%chk=tlbr3opt.chk
%mem=6MW
%nproc=1
# opt b3lyp/lanl2dz geom=connectivity

TlBr3 optimisation

0 1
 Tl
 Br                 1              B1
 Br                 1              B2    2              A1
 Br                 1              B3    3              A2    2              D1

   B1             2.65095281
   B2             2.65095281
   B3             2.65095281
   A1           120.00000000
   A2           120.00000000
   D1          -180.00000000

 1 2 1.0 3 1.0 4 1.0
 2
 3
 4