Transition Metal Metallacarbaboranes

Coordination Ability of 10-EtC(NHPr)=HN-7,8-C2B9H11 in the Reactions with Nickel(II) Phosphine Complexes

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) prepared by the nucleophilic addition of propyl amine to 10-EtC≡N-7,8-C 2 B 9 H 11 . For the complexation reactions, we used nickel(II) phosphine complexes [(R 2 R'P) 2 NiCl 2 ] with ligands having different steric parameters (Tolman cone angles, θ)-R 2 R'P = Me 2 PhP (θ = 122 • ), PBu 3 (θ = 132 • ), PPh 3 (θ = 145 • ) [23].…”

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) The initial analysis of the proposed structure of complexes 2-4 was carried out using standard methods of NMR and IR spectroscopy and mass spectrometry. The 1 H NMR spectra of complexes 2-4 demonstrated the presence of only one NH signal of the amidine substituent in the region of 5.04-5.53 ppm, as well as the absence of signals of the nido-carborane B-H-B bridge, suggesting that nickel was coordinated both by the pentagonal face of the carborane ligand and by one atom nitrogen of the amidine group.…”

Coordination Ability of 10-EtC(NHPr)=HN-7,8-C2B9H11 in the Reactions with Nickel(II) Phosphine Complexes

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) prepared by the nucleophilic addition of propyl amine to 10-EtC≡N-7,8-C 2 B 9 H 11 . For the complexation reactions, we used nickel(II) phosphine complexes [(R 2 R'P) 2 NiCl 2 ] with ligands having different steric parameters (Tolman cone angles, θ)-R 2 R'P = Me 2 PhP (θ = 122 • ), PBu 3 (θ = 132 • ), PPh 3 (θ = 145 • ) [23].…”

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) The initial analysis of the proposed structure of complexes 2-4 was carried out using standard methods of NMR and IR spectroscopy and mass spectrometry. The 1 H NMR spectra of complexes 2-4 demonstrated the presence of only one NH signal of the amidine substituent in the region of 5.04-5.53 ppm, as well as the absence of signals of the nido-carborane B-H-B bridge, suggesting that nickel was coordinated both by the pentagonal face of the carborane ligand and by one atom nitrogen of the amidine group.…”

Novel Class of Heterometallic Cubane and Boride Clusters Containing Heavier Group 16 Elements

“…Transition metal carbonyl compounds have received significant attention in polyhedron boranes, carboranes, metallacarboranes, and metallaborane chemistry in connection with their potential as versatile reagents in cluster growth reactions. Therefore, upon the availability of 2 , the chemistry was elaborated by means of a cluster expansion reaction with [Co 2 (CO) 8 ] and [Fe 2 (CO) 9 ].…”

ClosoversusHyperclosoMetallaboranes: A DFT Study

“…A transition metal fragment with more diffused orbitals can stabilize the hypercloso structure, which is reflected in the experimental synthesis of many hypercloso metallaboranes. A large number of hypercloso metallaboranes are reported in literature with a range of metal atoms and exohedral ligands . Table summarizes different varieties of hypercloso mono-metallaboranes reported in the literature.…”

Coordination Ability of 10-EtC(NHPr)=HN-7,8-C2B9H11 in the Reactions with Nickel(II) Phosphine Complexes

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) prepared by the nucleophilic addition of propyl amine to 10-EtC≡N-7,8-C 2 B 9 H 11 . For the complexation reactions, we used nickel(II) phosphine complexes [(R 2 R'P) 2 NiCl 2 ] with ligands having different steric parameters (Tolman cone angles, θ)-R 2 R'P = Me 2 PhP (θ = 122 • ), PBu 3 (θ = 132 • ), PPh 3 (θ = 145 • ) [23].…”

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) The initial analysis of the proposed structure of complexes 2-4 was carried out using standard methods of NMR and IR spectroscopy and mass spectrometry. The 1 H NMR spectra of complexes 2-4 demonstrated the presence of only one NH signal of the amidine substituent in the region of 5.04-5.53 ppm, as well as the absence of signals of the nido-carborane B-H-B bridge, suggesting that nickel was coordinated both by the pentagonal face of the carborane ligand and by one atom nitrogen of the amidine group.…”

Novel Class of Heterometallic Cubane and Boride Clusters Containing Heavier Group 16 Elements

“…Transition metal carbonyl compounds have received significant attention in polyhedron boranes, carboranes, metallacarboranes, and metallaborane chemistry in connection with their potential as versatile reagents in cluster growth reactions. Therefore, upon the availability of 2 , the chemistry was elaborated by means of a cluster expansion reaction with [Co 2 (CO) 8 ] and [Fe 2 (CO) 9 ].…”

ClosoversusHyperclosoMetallaboranes: A DFT Study

“…A transition metal fragment with more diffused orbitals can stabilize the hypercloso structure, which is reflected in the experimental synthesis of many hypercloso metallaboranes. A large number of hypercloso metallaboranes are reported in literature with a range of metal atoms and exohedral ligands . Table summarizes different varieties of hypercloso mono-metallaboranes reported in the literature.…”

Coordination Ability of 10-EtC(NHPr)=HN-7,8-C2B9H11 in the Reactions with Nickel(II) Phosphine Complexes

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) prepared by the nucleophilic addition of propyl amine to 10-EtC≡N-7,8-C 2 B 9 H 11 . For the complexation reactions, we used nickel(II) phosphine complexes [(R 2 R'P) 2 NiCl 2 ] with ligands having different steric parameters (Tolman cone angles, θ)-R 2 R'P = Me 2 PhP (θ = 122 • ), PBu 3 (θ = 132 • ), PPh 3 (θ = 145 • ) [23].…”

“…This promises the possibility of synthesizing complexes with simultaneous coordination of the carborane and amidine components. For our study we chose amidine 10-PrNHC(Et)=HN-7,8-C 2 B 9 H 11 (1) The initial analysis of the proposed structure of complexes 2-4 was carried out using standard methods of NMR and IR spectroscopy and mass spectrometry. The 1 H NMR spectra of complexes 2-4 demonstrated the presence of only one NH signal of the amidine substituent in the region of 5.04-5.53 ppm, as well as the absence of signals of the nido-carborane B-H-B bridge, suggesting that nickel was coordinated both by the pentagonal face of the carborane ligand and by one atom nitrogen of the amidine group.…”

Novel Class of Heterometallic Cubane and Boride Clusters Containing Heavier Group 16 Elements

“…Transition metal carbonyl compounds have received significant attention in polyhedron boranes, carboranes, metallacarboranes, and metallaborane chemistry in connection with their potential as versatile reagents in cluster growth reactions. Therefore, upon the availability of 2 , the chemistry was elaborated by means of a cluster expansion reaction with [Co 2 (CO) 8 ] and [Fe 2 (CO) 9 ].…”

ClosoversusHyperclosoMetallaboranes: A DFT Study

“…A transition metal fragment with more diffused orbitals can stabilize the hypercloso structure, which is reflected in the experimental synthesis of many hypercloso metallaboranes. A large number of hypercloso metallaboranes are reported in literature with a range of metal atoms and exohedral ligands . Table summarizes different varieties of hypercloso mono-metallaboranes reported in the literature.…”