Synthesis and crystal structures of tellurium complexes containing imidophosphinate ligands

Synthesis and structural studies of phosphorus carbonyl manganacycles containing the tetraphenyldiselenoimidodiphosphinato ligand

“…In compound Ph 2 P(Se)NHP(Se)Ph 2 neither the P-Se nor the P-N bond lengths are symmetrical (PSe = (2.085(1), 2.101(1) Å and P-N = 1.678 (4) The MnSePNPSe ring in 2 displays a half-chair conformation with the Mn(1) atom out of the plane (with a deviation of À1.5369 Å ) defined by P(2), P(1), Se(1), S (2), and N(1) (with À0.0147, 0.0147, À0.0120, 0.0120, and 0.0760 Å mean deviations, respectively). The preferred conformations of the MSePNPSe metallacycles are related to the boat conformation (distorted, pseudo, or twisted boat), although a half-chair conformation has been reported [9].…”

“…The fact is that coordination of the [N(EPPh 2 ) 2 ] À (E = O, S, Se) anions has been extensively studied over the last years. It has been found that the ligand N(SePPh 2 ) 2 binds a wide range of atoms varying from main group elements (K [2], group 12 [3]; Al and Ga [4], In [5], Sn [3,6], Pb [3], Sb [7], Bi [5,7], Se [8] and Te [9]), transition metals (V and Cr [10], Mn [11a] and Re [11], Ru [12], Os [13a,13b], Co [14], Rh [2,12b,12c], Ir [12b,15], group 10: Ni [16], Pd [2,12c,16,17], Pt [2,16,17], and group 11: Cu [14,18a] Ag [18a,18b,18c] Au [18b,18d,18e]) to rare-earth metals: Y [19], La, Gd, Er, Yb [20], and Sm [21]. Although the list of N(SePPh 2 ) 2 [22] complexes is certainly long, it is noteworthy the scarcity of metal carbonyl complexes with the N(SePPh 2 ) 2 fragment (or [N(EPPh 2 ) 2 ] À ; E = O, S for that matter).…”

The Nature of the Chemical Bond in Linear Three-Body Systems: From I3–to Mixed Chalcogen/Halogen and Trichalcogen Moieties

“…(g) References [315, 316]. (h) References [162, 165, 174, 181, 183, 209, 216, 223, 228, 238, 317–323]. …”

“…(c) References [317, 318, 363–365]. (d) References [173, 174, 188–190, 194, 200, 204, 205, 212, 213, 235, 244, 317, 363, 366–381]. (e) References [38, 360, 382–385].…”

Six-membered tetracarbonylmanganese(I) and -rhenium(I) metalacycles containing the [Ph2P(Se)NP(Se)Ph2] ligand: solution and solid state characterization

“…It was not until 1978, when the HN(SePPh 2 ) 2 acid and its K salt syntheses were first reported, that the coordination capacity of the N(SePPh 2 ) 2 moiety began to be tested [3]; during the course of these studies an easy, expeditious way of preparing the HN(SePPh 2 ) 2 acid and its K salt was developed [4b,c]. The metal cores to which the N(SePPh 2 ) 2 ligand has been attached range from main group elements (K [4b], groups 11 [5] and 12 [6]; Al and Ga [7], In [8], Sn [6,9a,b], Pb [6], Sb [9,10], Bi [8,10], Se [11] and Te [12]), transition metals (V [13], Cr [13], Re [14a,b], Ru [15a,b,c,d], Os [16a,b], Co [5d], Rh [4b,15b,c], Ir [15b,17], group 10: Ni [4a], Pd [4a,b,c,15c] and Pt [4a,b,c]) to rare-earth metals: Y [18a,b], La, Gd, Er, Yb [19], and Sm [20].…”