Ammonia Coordination Introducing a Magnetic Moment in an On‐Surface Low‐Spin Porphyrin1. (19th March 2013) - Wäckerlin, Christian; Tarafder, Kartick; Girovsky, Jan; Nowakowski, Jan; Hählen, Tatjana; Shchyrba, Aneliia; Siewert, Dorota; Kleibert, Armin; Nolting, Frithjof; Oppeneer, Peter M.; Jung, Thomas A.; Ballav, Nirmalya