Structure of 1,5-dimethyl-3,7-dithiabicyclo[3.3.1]nonane-9-selone

Abstract

Abstract.C9HI4SzSe, Mr=265"3, orthorhombic, Introduction. Cmcm

Synthesis, Electronic Structure, and Reactivities of Two‐Sulfur‐Stabilized Carbones Exhibiting Four‐Electron Donor Ability

“…These distances are within the range typically observed for Au–Au interactions (2.50–3.50 Å) . The S II →C distances of 5 (1.782 Å and 1.767 Å) are almost exactly halfway between those of 1⋅ HTfO and 1⋅ (HTfO) 2 , whereas the distances for 8 (1.837 Å and 1.805 Å) are similar to that of the single bond length (1.81 Å) . The Au←C→Au bond angle for 5 (91.3°) is wider than those for 6 a (88.5°) and 7 (88.5°).…”

“…[19] The S II !Cd istances of 5 (1.782 and 1.767 )a re almoste xactly halfwayb etween those of 1·HTfO and 1·(HTfO) 2 ,w hereas the distances for 8 (1.837 and 1.805 )a re similart ot hat of the single bond length ( 1.81 ). [18] The Au ! C!Au bond angle for 5 (91.38)i s wider than those for 6a (88.58)a nd 7 (88.58).…”

The X-ray crystal structure of 2-tert-butylindolizine-3-selenoaldehyde

“…A selection of carbon-selenium bond lengths for RCHSe and R 2 CSe molecules appears in Table 1. The C(10)-Se(10) length in 1 [1.808(5) Å ] is, within experimental error, almost identical to those in selenoketones and an g 1 -selenoaldehyde complex [6,13,14], as well as to the values for R 2 NCHSe [9]. This similarity of the C-Se distance in 1 to selenoformamides and the coplanarity of the indolizine and selenocarbonyl groups [N(1)-C(2)-C(10)-Se (10) 1°] are consistent with electron delocalisation between the two units.…”

“…Molecular structure of 1 (thermal ellipsoids at 50% probability level). Selected bond lengths (Å ) and angles (°) (standard uncertainties in parentheses); C(2)-C(10) 1.378 (6), Se(10)-C(10) 1.808 (5), N(1)-C(9) 1.367 (5), N(1)-C(5) 1.375 (5), N(1)-C(2) 1.417 (5) 1.783(15), 1.781(13) [6] 1 1.808 (5) This work 4,4 0 -dimethoxyselenobenzophenone 1.790(4) [13] S S Se 1.774(6) [14] a From microwave spectroscopy. b From gas-phase electron diffraction.…”

Synthesis, Structure, and Reactivities of Iminosulfane‐ and Phosphane‐Stabilized Carbones Exhibiting Four‐Electron Donor Ability

“…The P!Ca nd S!Cd istances of 11 are comparable to single bond lengths (PÀC: 1.87 , SÀC: 1.81 ). [20,21] The Au ! C!Au bond angle (86.58)i nd iaurated complex 10 is the smallest of the diaurated carbonec omplexes (A·(AuCl) 2 :9 8.48; A·(AuPPh 3 )(AuCl): 96.18:P h 3 PCC(OEt) 2 ·(AuCl) 2 :8 9.78).…”