Boron cluster anions and their derivatives in complexation reactions

Effect of Nature of Substituents on Coordination Properties of Mono- and Disubstituted Derivatives of Boron Cluster Anions [BnHn]2– (n = 10, 12) and Carboranes with exo-Polyhedral B–X Bonds (X = N, O, S, Hal)

“…It is known that unsubstituted boron clusters make it possible to prepare complexes of soft acids with coordinated boron hydride ligands [42,43] (first of all, copper(I), silver(I), lead(II)). Heteroleptic silver(I) complexes with inner-sphere boron cluster anions are the most studied group of complexes.…”

“…The physiological properties of boron clusters and their applications in medicine are discussed in recent reviews [37][38][39][40][41]. To date, the coordination ability of boron clusters [BnHn] 2-(n = 10, 12), perchlorinated clusters [B10Cl10] 2-, and dimeric clusters [B20H18] 2-has been studied in sufficient detail and analyzed in recent reviews [42][43][44][45][46][47][48][49][50][51]. It is concluded that boron cluster anions are soft bases according to Pearson; therefore, their participation in complexation reactions as ligands is observed in complexation with metals that act as Pearson's soft acids (Cu(I), Ag(I), and Pb(II)).…”

A New Approach to the Synthesis of Nanocrystalline Cobalt Boride in the Course of the Thermal Decomposition of Cobalt Complexes [Co(DMF)6]2+ with Boron Cluster Anions

“…The development of alternative, simple, and convenient methods for the preparation of high purity transition metal boride nanoparticles is still an urgent problem in applied chemistry. We suggested that metal-containing boron clusters [ 26 , 27 , 28 , 29 , 30 , 31 ] can be used as sources to prepare metal borides. These power-intense compounds can lower the temperatures need to form final products.…”

Gold(III) Complexation in the Presence of the Macropolyhedral Hydridoborate Cluster [B20H18]2−

“…Higher polyhedral boron dianions [B n H n ] 2− (n = 6-12) [1][2][3][4][5] (n.b., hydridoborate is the new IUPAC recommended name for this class of compounds [6]) are fascinating ligands in coordination chemistry of transition metals. On the one hand, due to their 3D aromaticity [7][8][9][10][11] and low charge density, they are typical soft Lewis bases, which form numerous stable complexes with the soft metal acids including copper(I) and silver(I) [12][13][14][15], zinc(II) and cadmium(II) [16][17][18][19], and lead(II) ( [20] and references therein). In addition, the boron cluster anions form compounds with metal(II) complex cations acting as counterions, e.g., Cu(II), Fe(II), Co(II), Ni(II), and Mn(II) [15,[21][22][23][24][25][26].…”

“…On the one hand, due to their 3D aromaticity [7][8][9][10][11] and low charge density, they are typical soft Lewis bases, which form numerous stable complexes with the soft metal acids including copper(I) and silver(I) [12][13][14][15], zinc(II) and cadmium(II) [16][17][18][19], and lead(II) ( [20] and references therein). In addition, the boron cluster anions form compounds with metal(II) complex cations acting as counterions, e.g., Cu(II), Fe(II), Co(II), Ni(II), and Mn(II) [15,[21][22][23][24][25][26]. In the presence of metals(III) complexes, the boron cluster anions act as reducing agents being oxidized to oxidoborates [27][28][29].…”