Sterically encumbered terphenyl substituted primary pnictanes ArEH2 and their metallated derivatives ArE(H)Li (Ar=C6H3-2,6-Trip2; Trip=2,4,6-triisopropylphenyl; E=N, P, As, Sb)

9-Triptycenyl complexes of group 13 and 15 halides and hydrides

“…These data are consistent with those for related primary stibanes, e.g. [{(Me 3 Si) 2 HC}SbH 2 ] [18] and [{2,6-(Ar 0 ) 2 C 6 H 3 }SbH 2 ] [19] which show Sb-H stretches at 1860 and 1875 cm À1 in their infrared spectra and hydride resonances at d 2.12 and 2.66 ppm in their 1 H NMR spectra. Finally, comment should be made about the high thermal stability of 9 (dec. 170°C) which presumably arises from the kinetic protection afforded by the 9-triptycenyl ligand and is comparable to the stability of the bulky terphenyl substituted stibane [{2,6-(Ar 0 ) 2 C 6 H 3 }SbH 2 ] (dec. 195°C).…”

“…Its molecular structure (Fig. 6) shows it to be monomeric, as is the case for the only other structurally characterised uncoordinated primary stibane, [{2,6-(Ar 0 ) 2 C 6 H 3 }SbH 2 ] [19]. Unfortunately, its hydride ligands could not be located from difference maps but the Sb-C bond length of 2.206 (6) A is not significantly different (within 3 e.s.ds) to those in both 6 and [{2,6-(Ar 0 ) 2 C 6 H 3 }SbH 2 ] (2.…”

Syntheses of a stable tristibine and of related antimony compounds with the 2,6-dimesitylphenyl (Dmp) substituent

“…The stable distibenes: (RSb) 2 R = Dmp or 2,6-Trip 2 C 6 H 3 [1], the hydrides DmpSbH 2 (4) [2], RSbH 2 and RSb(Li)H, R = 2,6-Trip 2 C 6 H 3 [3], and their precursors DmpSbCl 2 [1,4] and 2,6-Trip 2 C 6 H 3 SbCl 2 [1] were obtained. The Dmp group was also used to protect the P 3 unit in DmpP(PPh 2 ) 2 [5].…”

Synthesis and Characterization of the Very Bulky Phenols Ar*OH and Ar′OH (Ar* = C6H3‐2,6‐Trip2, Trip = C6H2‐2,4,6‐iPr3; Ar′ = C6H3‐2,6‐Dipp2, Dipp = C6H3‐2,6‐iPr2) and Their Lithium and Sodium Derivatives (LiOAr′)2 and (NaOAr*)2

“…In much of this work the terphenyl ligand has been attached directly to the reactive center. However, we have also shown that several derivatives of terphenyl ligands (or their precursors) can be synthesized by attachment of -NH 2 , [9] PH 2 , [9] AsH 2 , [9] SbH 2 , [9] -SH, [10] or SeH [10] groups to the central phenyl ring at the C-1 position to give very bulky terphenylamines, phosphanes, thiols, etc. A notable omission from this list are the corresponding phenol derivatives.…”