Diorganochalcogen(II) ligands of type [R2C(OH)CH2](2-Me2NCH2C6H4)E (E = S, Se, Te; R = Me, Ph), and their silver(I) complexes

Hypercoordinated organoselenium compounds with O→Se intramolecular interactions

“…We described previously the synthesis and the solution behavior of compounds [Me 2 C(OH)CH 2 ](2-Me 2 NCH 2 C 6 H 4 )Se (1) [21] and [2-(O=CH)C 6 H 4 )Se[S 2 P(OPr i ) 2 ] (2) [17], but at that time we didn't succeed to obtain single crystals suitable for X-ray diffraction studies.…”

“…Hydrogen atoms, except H1 were omitted for clarity. [21]. In compound 1 the N1···H1 interatomic distance is much greater (6.51 Å) than the sum of the van der Waals radii of these two elements.…”

“…During the last years our research interest was focused on organoselenium compounds with organic groups of type 2-(R 2 NCH 2 )C 6 H 4 (R = Me, Et, Pr i ) [11][12][13][14], 2,6-(R 2 NCH 2 )C 6 H 3 [15], (RN=CH)C 6 H 4 (R = Bn, Mes, Ph) [16] or 2-(O=CH)C 6 H 4 [17] groups, as well as several metal complexes, either metal organoselenolates [18][19][20], or compounds bearing the alkoxo functionalized ligands, [R 2 C(OH)CH 2 ](2-Me 2 NCH 2 C 6 H 4 )Se [21]. As a continuation of our studies we discuss here the crystal and molecular structure of two organoselenium(II) compounds with potential for hypercoordination, namely …”

New silver(I) and mercury(II) metal complexes containing the heteroleptic diorganoselenium(II) ligand (n-Bu)[2-(Me2NCH2)C6H4]Se. Synthesis and structural characterization

“…10 As part of our interest in the coordination chemistry of organoselenium(II) compounds containing organic groups with donor atoms capable to coordinate intramolecularly (i.e. [R 2 C(OH)CH 2 ][2-(Me 2 NCH 2 )C 6 H 4 ]Se (R = Me, Ph), 11 [2-(R 2 NCH 2 )C 6 H 4 ][(3,5-dmpz)CH 2 CH 2 ]Se (R = Me, Et, dmpz = dimethylpyrazole), 12 we report herein on the synthesis and structural characterization of the new heteroleptic diorganoselenium(II) ligand (n-Bu)[2-(Me 2 NCH 2 )C 6 H 4 ]Se (1), used as building block for silver and mercury complexes.…”

Cadmium complexes bearing Me2N^E^O− (E = S, Se) organochalcogenoalkoxides and their zinc and mercury analogues

“…We have recently developed hemi-labile, potentially tridentate alcohol proteo-ligands {L E,R2 }H (E = S, Se; R = Me, CF 3 )containing a nitrogen and a chalcogen heteroatoms, and we have explored their coordination chemistry with coinage metals 15 and with tetrelenes (Scheme 1). 16 By varying the nature of the substituent in  position to the hydroxyl and the electronic density at the metal centre, we have been able to tune the coordination patterns in tin(II) and lead(II) complexes, notably by enforcing coordination of the heteroelements onto the metal atom.…”