Synthesis and Structure of Triethylammonium 2-(Acetonitrile)nonahydro-closo-decaborate(1-)

Synthesis and properties of meso-arylporphyrin – closo-decaborate anion conjugates

“…Changes in 11 B NMR spectra of the products are similar to that in NMR spectra in the case of primary aliphatic, aromatic amines [20] and alkoxyporphyrin [16] addition to nitrilium derivatives of closo-decaborate anion. Thus, the signal of the substituted boron atom is in -14.7 ÷ -14.8 ppm area, signal of apical peaks appears at 3.1 ÷ 3.0 ppm (B 10 ) and -4.0 ÷ -4.1 ppm (В 1 ).…”

Tetrabutylammonium 2-[2,5-dimethyl-3-(4-nitrophenyl)-2,3-dihydro-1,2,4-oxadiazolium-4-yl]nonahydro-closo-decaborate

“…2). This bond is longer as compared to the starting nitrilium closodecaborate (1.515 (5) Å) (Dou et al, 1994) and is equal, within 3σ, to those in the previously described closo-decaborate clusters functionalized with substituted 2,3-dihydro-1,2,4-oxadiazoles (1.5438 (18)-1.546 (3) Å) (Mindich et al, 2012).…”

2-[(1-{[3-(dimethylazaniumyl)propyl]methylamino}ethylidene)azaniumyl]nonahydro-closo-decaborate dimethyl sulfoxide disolvate

“…The molecular structure of I defines a slightly distorted bicapped square antiprism with an amidine ligand coordinated to an equatorial boron atom (B2). The exo B-N distance, 1.541 (3) Å, in I is slightly longer than that found in [2-B 10 H 9 NCCH 3 ] -(II), 1.515 (5) Å, (Dou et al, 1994) and [2-B 10 H 9 NCCH=CH 2 ] -(III), 1.523 (4) Å (Siriwardane et al, 1989). The average apical-equatorial distance in I is B1-B eq = 1.693 (5) Å, which compares favorably to the analogous distances of 1.682 (4) Å and 1.693 (5) Å in II and III, respectively, and B10-B eq = 1.692 (11) Å, which compares favorably to the analogous distances of 1.689 (2)Å and 1.686 (5) Å in II and III, respectively.…”

“…For related structures of 2-substituted decaborate compounds, see: Dou et al (1994); Siriwardane et al (1989). For related structures of amidine-substituted polyhedral boranes, see: Froehner et al (2006).…”