Synthesis and coordination properties of 1-tert-butylchlorophosphino- and 1,2-bis(tert-butylchlorophosphino)-1,2-dicarba-closo-dodecaborane(12)—molecular structures of rac- and meso-1,2-(PtBuCl)2C2B10H10 and (R,R,R,R/S,S,S,S)-[{Cu{1,2-(PtBuCl)2C2B10H10}(μ-Cl)}2]

Carbaborane‐Substituted 1,2,3‐Triphospholanes and 1‐Aza‐2,5‐diphospholane: New Synthetic Approaches

“…An alternative synthetic route is the reaction of 1,2‐bis(halophosphanyl)‐1,2‐dicarba‐ closo ‐dodecaborane(12)s12a, 13c,l, m, 20 with dichlorophosphanes and a reducing agent (Scheme ). The starting materials 1,2‐bis(chlorophenylphosphanyl)‐1,2‐dicarba‐ closo ‐dodecaborane(12) ( 1 b )12a and 1,2‐bis(chlorocyclohexylphosphanyl)‐1,2‐dicarba‐ closo ‐dodecaborane(12) ( 1 c ) (see the Supporting Information for X‐ray structures) are easily accessible by reaction of the dilithiated carbaborane with dichlorophenylphosphane or dichlorocyclohexylphosphane.…”

Pnicogen Bonds: A New Molecular Linker?

“…Furthermore, compressed bond angles of 112.9/112.28 and 112.1/ 113.28 can be found in similar compounds. [17,18] The indications for an attractive P···P interaction are remarkable, because no acceptor region for lone pairs of electrons at phosphorus can be envisioned. Sundberg et al observed hyperconjugation of the lone pair of electrons at phosphorus with the adjacent phosphorus-carbon bond (LP P !s* PC ) for similar carbaborane compounds by employing a natural bond orbital (NBO) analysis.…”

Platinum Metal Complexes of Carbaboranylphophines: Potential Anti Cancer Agents

“…The chemical shift of the carbon atoms of the tert-butyl group in compound 10 is shifted downfield by ca. 10 ppm with respect to that in the free ligand 1 [Sterzik et al, 2001] and split into a triplet of pseudotriplets due to coupling with the platinum and phosphorus atoms ( 1 J PC = 40.1 and 3 J PC = 7.9 Hz), whereas in the free ligand the coupling constant is smaller ( 1 J PC = 17 Hz). Single crystals of 5 and 6 were obtained from a concentrated toluene solution at room temperature.…”

“…Compound 5 provides the largest decrease in C-C distance for the mononuclear platinum complexes, i.e. 0.062 Å relative to that of the free ligand 1 (1.770 Å) [Sterzik et al, 2001]. The diminution of C-C distances can be rationalized by the change of electronic properties of the phosphorus atoms due to complexation.…”

“…rac-1,2-Bis(tert-butylchlorophosphino)-1,2-dicarba-closo-dodecaborane(12) (1) [Sterzik et al, 2001], rac-1,2-bis(phenylchlorophosphino)-1,2-dicarba-closo-dodecaborane(12) (2) [Balema et al, 1999;Alexander and Schroeder, 1963], rac-1,2-Bis(N,N-diethylaminochlorophosphino)-1,2-dicarba-closo-dodecaborane(12) (3), and rac-1,2-Bis(N,N-diphenylaminochlorophosphino)-1,2-dicarba-closo-dodecaborane(12) (4) [Stadlbauer et al, 2009] were prepared according to the literature and obtained in good yield. Indones.…”