Hi,

I tried subscribing to the mailing list but I do not understand the instructions as they are in a language unfamiliar to me. Sorry.

I would like to construct Zmatrix block for four molecules of HBr. I would like the HBr to be a rigid unit but allow the four HBr molecules to rotate and move relative to each other until total relaxation results in the ground state. I was wondering if the following Zmatrix is OK, particularly the last three numbers:

%block Zmatrix
molecule_cartesian
2 0 0 0 2.687233 0.848501 2.400947 1 1 1
1 1 0 0 1.024356 2.152052 -1.704391 1 1 1
molecule_cartesian
2 0 0 0 0.608793 2.751462 2.400947 1 1 1
1 1 0 0 1.024356 2.152052 -0.657193 1 1 1
molecule_cartesian
2 0 0 0 -2.078440 1.902961 2.400947 1 1 1
1 1 0 0 1.024356 2.152052 0.390004 1 1 1
molecule_cartesian
2 0 0 0 8.892767 -0.848501 2.400947 1 1 1
1 1 0 0 1.024356 2.152052 1.437202 1 1 1
%endblock Zmatrix

I use three 1's at the end of each line to allow all coordinates to change.

Will this Zmatrix do the job?

Thank you,

Vahid Askarpour

Responder a