34.8-50GHz obs. toward Orion KL

Twenty-one molecular species of this survey were not firmly detected in the Q band by Rizzo+ (2017, J/A+A/605/A76), including species such as H_2_CS, HCOOH, C_2_H_5_OH, H_2_^13^CO, H_2_CCO, CH_3_CHO, CH_2_OCH_2_, HCN {upsilon}_2_=1, and CH_3_OCHO {upsilon}_t_=1. In particular, the vibrationally excited states of ethyl cyanide (C_2_H_5_CN {upsilon}_13_/{upsilon}_21_) are for the first time firmly detected in the Q band.

NH_3_ (15,15) and (16,16) are identified, and they are so far the highest transitions of the NH3 inversion lines detected toward Orion KL. All of the identified lines can be reproduced by a radiative transfer model.