<span dir="ltr" aria-label="Translated text: I'm trying to calculate the frequencies of an organic molecule, and each time I get two or three negative values. I don't understand why. When I do the same thing with Gaussian, all the values are positive. Can you help me? Thank you." style="font-size: 28px; line-height: 36px; background-color: rgb(248, 249, 250); border: none; padding: 2px 0.14em 2px 0px; position: relative; margin: -2px 0px; resize: none; font-family: inherit; overflow: hidden; width: 270px; white-space-collapse: preserve; overflow-wrap: break-word; color: rgb(31, 31, 31);">Dear all,<div><span dir="ltr" aria-label="Translated text: I'm trying to calculate the frequencies of an organic molecule, and each time I get two or three negative values. I don't understand why. When I do the same thing with Gaussian, all the values are positive. Can you help me? Thank you." style="font-size: 28px; line-height: 36px; background-color: rgb(248, 249, 250); border: none; padding: 2px 0.14em 2px 0px; position: relative; margin: -2px 0px; resize: none; font-family: inherit; overflow: hidden; width: 270px; white-space-collapse: preserve; overflow-wrap: break-word; color: rgb(31, 31, 31);">I'm trying to calculate the frequencies of an organic molecule, and each time I get two or three negative values. I don't understand why. When I do the same thing with Gaussian, all the values are positive. Can you help me? Thank you.</div> -- You received this message because you are subscribed to the Google Groups "cp2k" group. To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:cp2k+unsubscribe@googlegroups.com">cp2k+unsubscribe@googlegroups.com</a>. To view this discussion visit <a href="https://groups.google.com/d/msgid/cp2k/04e9b6b3-fb06-4d60-b861-9546dcf83fe5n%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/cp2k/04e9b6b3-fb06-4d60-b861-9546dcf83fe5n%40googlegroups.com</a>.