Synthesis and characterization of the hexagonal prismatic cage {THF⊂[PhB(CN)₃]₆[Cp*Rh]₆}⁶⁺

Abstract

Condensation of [Cp*Rh(CH(3)NO(2))(n)](2+) and the tricyanoborate [PhB(CN)(3)](-) affords the hexagonal bipyramidal cage [[PhB(CN)(3)](6)[Cp*Rh](6)](6+), demonstrating that tetrahedral tricyanide building blocks can lead to novel cage structures.

Chains of Alkaline Metal Cations and Tetracyanidoborato Anions – Syntheses, Structures and Properties of the New [AI(18‐crown‐6)][B(CN)4)] (AI = Cs, Rb)

“…[5,13,14] Besides possible applications as ionic liquids, tetracyanidoborates offer other uses, e.g. as precursors for novel compounds and advanced materials [8,11,[13][14][15][16][17][18][19] or as electrolytes. [20] In this paper we report about the syntheses, structures and some properties of two new tetracyanidoborates, [Cs (18- …”

Structural diversity and spectral and thermal properties of the first alkaline earth metal tetracyanidoborates: [Mg(H2O)6][B(CN)4]2, [Mg(H2O)2][B(CN)4]2, [Mg(DMF)6][B(CN)4]2, [Ca(H2O)3][B(CN)4]2, and [Ca(H2O)2(CH3CN)][B(CN)4]2

“…All atoms except hydrogen were refined using anisotropic thermal parameters. Hydrogen atoms were refined isotropically (1) or fixed on idealized positions and refined with isotropic thermal parameters based on the bonded atom (2)(3)(4)(5). All calculations were performed on PCs using the SHELX-97 programs 28 or the WinGX program system.…”

“…Most of the so far structurally established tetracyanidoborates crystallize in fascinating three-dimensional structures, [1][2][3] or have enabled the formation of unprecedented structural units due to the fact that this anion is relatively large and weakly coordinating. 4 Tetracyanidoborates have served as starting materials for new weakly coordinating anions like [B(CF 3 ) 4 ] − or [B(CNB(C 6 F 5 ) 3 ) 4 ] − containing salts and for other new materials. [5][6][7][8] Compounds with weakly coordinating anions (WCAs) are attracting a lot of scientific as well as industrial interest for various reasons, including their stability against redox agents as well as against acids and bases and their ability to stabilize strong electrophilic cations.…”

“…Found: C, 43.891; N, 28.12; H, 5.81. IR (ATR, cm −1 ν max ): Synthesis of [Ca(H 2 O) 3 ][B(CN) 4 ] 2(4). A total of 13.798 g (100 mmol) Na[B(CN) 4 ] is dissolved in 100 mL H 2 O and acidified with 18.5 mL (∼200 mmol) of HCl (conc.)…”

Conductivity, Structures, Spectra, and Thermal Properties of Lithium and Sodium Tetracyanidoborates with Crown Ether Encapsulated Cations: Isolated Ions in [AI(12‐crown‐4)2][B(CN)4] and 1D Chains in [AI (15‐crown‐5)][B(CN)4] (AI = Li, Na)

“…[4][5][6][7][8] Compounds are known that contain solvent molecules, for example, K[B(CN) 4 ]·THF [6,9] or [NH 4 ][B(CN) 4 ]·CH 3 CN, [6,9] and, furthermore, there are established tetracyanidoborate alkali cations complexed by macrocyclic polyether molecules, which show an unusual network of low-dimensional salt chains with different coordination behavior between the encapsulated alkali metal cations and the multifunctional [B(CN) 4 ]units. Therefore, tetracyanidoborates became a useful starting material for unusual anions such as [B(CF 3 ) 4 ]or [B{CN·B(C 6 F 5 ) 3 } 4 ] -, [4,[11][12][13][14][15][16][17][18][19][20] which are able to stabilize highly reactive cations. Therefore, tetracyanidoborates became a useful starting material for unusual anions such as [B(CF 3 ) 4 ]or [B{CN·B(C 6 F 5 ) 3 } 4 ] -, [4,[11][12][13][14][15][16][17][18][19][20] which are able to stabilize highly reactive cations.…”