The organoselenium (II) derivatives are used in organic synthesis, enzyme mimics and as chemotherapeutic agents or for the potential of 2-(N,Ndimethylaminomethyl)phenyl and related derivatives to stabilize exotic species such as the covalent azide [2-(Me2NCH2)C6H4]SeN3 [1], or the trihalide [2-(Me2NCH2)C6H4]SeCl3 [2, 3]. Due to these properties, the chemistry of organoselenium (II) compounds containing an intramolecular N→Se interaction has attracted considerable interest in recent years [4-7]. We report here on the characterization, of new hypervalent organoselenium compounds containing 2-{X(CH2CH2)2NCH2}C6H4 moieties (X = O, NMe). The paper describes the use of decoupled HSQC spectra for assigning 1H and 13C signals and undecoupled HSQC spectra for revealing 1H signal multiplicities in crowded regions of the NMR spectrum [8]. The H, Se-HMBC correlations provided evidence for the presence of the intramolecular N→Se interaction in solution for the investigated organoselenium compounds [8].