Synthesis and Characterization of High-Energy -Perovskite Compounds Cs[BH] Based on Cesium Dodecahydro--Borate with Molecular Oxoanions ( = [NO], [ClO] and [ClO]).

Three novel -perovskite compounds, formulated as Cs[BH] ( = [NO], [ClO], and [ClO]), were successfully synthesized through the direct mixing of aqueous solutions containing Cs[BH] and Cs (: [NO], [ClO], [ClO]), followed by isothermal evaporation. All three compounds crystallize in the orthorhombic space group , exhibiting relatively similar unit-cell parameters (e.g.

Crystal structure of (1-eth-oxy-ethyl-idene)di-methyl-aza-nium tetra-phenyl-borate.

In the cation of the title salt, C6H14NO(+)·C24H20B(-), the C-N bond lengths are 1.297 (2), 1.464 (2) and 1.

Crystal structure of 1,2,3,4-di-O-methyl-ene-α-d-galacto-pyran-ose.

The title compound, C8H12O6, was synthesized by de-acetyl-ation of 6-acetyl-1,2,3,4-di-O-methyl-ene-α-d-galactose with sodium methoxide. The central part of the mol-ecule consists of a six-membered C5O pyran-ose ring with a twist-boat conformation. Both fused dioxolane rings adopt an envelope conformation with C and O atoms as the flap.

Crystal structure of (eth-oxy-ethyl-idene)di-methyl-aza-nium ethyl sulfate.

In the title salt, C6H14NO(+)·C2H5SO4 (-), the C-N bond lengths in the cation are 1.2981 (14), 1.4658 (14) and 1.

Crystal structure of N''-benzyl-N''-[3-(benzyl-dimethyl-aza-nium-yl)prop-yl]-N,N,N',N'-tetra-methyl-guanidinium bis-(tetra-phenyl-borate).

In the crystal structure of the title salt, C24H38N4 (2+)·2C24H20B(-), the C-N bond lengths in the central CN3 unit of the guanidinium ion are 1.3364 (13), 1.3407 (13) and 1.

Crystal structure of N-[3-(di-methyl-aza-nium-yl)prop-yl]-N',N',N'',N''-tetra-methyl-N-(N,N,N',N'-tetra-methyl-form-am-id-in-ium-yl)-guanidinium dibromide hydroxide monohydrate.

The asymmetric unit of the title hydrated salt, C15H37N6 (3+)·2Br(-)·OH(-)·H2O, contains one cation, three partial-occupancy bromide ions, one hydroxide ion and one water mol-ecule. Refinement of the site-occupancy factors of the three disordered bromide ions converges with occupancies 0.701 (2), 0.

Crystal structure of N,N,N',N',N'',N''-hexa-methyl-guanidinium cyanate 1.5-hydrate.

The title hydrated salt, C7H18N3 (+)·OCN(-).1.5H2O, was synthesized starting from N,N,N',N',N'',N''-hexa-methyl-guanidinium chloride by a twofold anion-exchange reaction.

Crystal structure of 2-bromo-3-di-methyl-amino-N,N,N',N',4-penta-methyl-4-(tri-methyl-sil-yloxy)pent-2-eneamidinium bromide.

The reaction of the ortho-amide 1,1,1-tris-(di-methyl-amino)-4-methyl-4-(tri-methyl-sil-yloxy)pent-2-yne with bromine in benzene, yields the title salt, C15H33BrN3OSi(+)·Br(-). The C-N bond lengths in the amidinium unit are 1.319 (6) and 1.

Crystal structure of N-[3-(di-methyl-amino)-prop-yl]-N',N',N'',N''-tetra-methyl-N-(N,N,N',N'-tetra-methyl-form-amid-in-ium-yl)guanidinium bis-(tetra-phenyl-borate).

In the title salt, C15H36N6 (2+)·2C24H20B(-), the three N-C bond lengths in the central C3N unit of the bis-amidinium ion range between 1.388 (3) and 1.506 (3) Å, indicating single- and double-bond character.

Crystal structure of N''-(2-eth-oxy-2-oxoeth-yl)-N,N,N',N'-tetra-methyl-N''-[3-(1,3,3-tri-methyl-ureido)prop-yl]guanidinium tetra-phenyl-borate.

In the title salt, C16H34N5O3 (+)·C24H20B(-), the C-N bond lengths in the cation are 1.3368 (16), 1.3375 (18) and 1.

Crystal structure of 2-di-methyl-amino-1-eth-oxy-carbonyl-3-methyl-3,4,5,6-tetra-hydro-pyrimidin-1-ium tetra-phenyl-borate.

The asymmetric unit of the title salt, C10H20N3O2 (+)·C24H20B(-), contains two cations and two tetra-phenyl-borate ions. The C-N bond lengths in the central CN3 unit of the guanidinium ions range between 1.323 (2) and 1.

Crystal structure of 1,2,3,5-di-O-methyl-ene-α-d-xylo-furan-ose.

The title compound, C7H10O5, was synthesized by reaction of d-xylose with paraformaldehyde. In the crystal, the central part of the mol-ecule consists of a five-membered C4O ring with an envelope conformation, with the methine C atom adjacent to the O atom being the flap. The protected O atoms of both cyclic acetal groups are oriented so that the four chiral C atoms of the furan-ose part show an R configuration.

N,N,N'-Trimethyl-N''-(4-nitro-phen-yl)-N'-phenyl-guanidine.

The C-N bond lengths in the guanidine unit of the title compound, C16H18N4O2, are 1.298 (2), 1.353 (2) and 1.

N''-(4-Meth-oxy-phen-yl)-N,N,N'-trimethyl-N'-phenyl-guanidine.

In the title compound, C17H21N3O, the C-N bond lengths in the guanidine unit are 1.2889 (19), 1.3682 (19) and 1.

(But-oxy-methyl-idene)di-methyl-aza-nium tetra-phenyl-borate aceto-nitrile monosolvate.

In the title solvated salt, C7H16NO(+)·C24H20B(-)·C2H3N, the C-N bond lengths in the cation are 1.2831 (19), 1.467 (2) and 1.

(Meth-oxy-methyl-idene)di-methyl-aza-nium tetra-phenyl-borate aceto-nitrile monosolvate.

In the cation of the title salt, C4H10NO(+)·C24H20B(-)·C2H3N, the C-N bond lengths are 1.2864 (16), 1.4651 (17) and 1.

3-Methyl-4,5-di-hydro-oxazolium tetra-phenyl-borate.

In the cation of the title salt, C4H8NO(+)·C24H20B(-), the C-N bond lengths are 1.272 (2), 1.4557 (19) and 1.

2-[4-(Carbazol-9-yl)phen-yl]-1,3-diethyl-1,3-di-phenyl-guanidine.

In the title compound, C35H32N4, the C-N bond lengths in the guanidine part are 1.286 (3), 1.387 (2) and 1.

N-[3-(Di-methyl-amino)-prop-yl]-N,N',N',N'',N''-penta-methyl-guanidinium tetra-phenyl-borate.

In the title salt, C11H27N4 (+)·C24H20B(-), the C-N bond lengths in the central CN3 unit of the guanidinium ion are 1.333 (4), 1.334 (4) and 1.

N-[3-(Benzyl-dimethyl-aza-nium-yl)prop-yl]-N',N',N'',N''-tetra-methyl-guanidinium bis-(tetra-phenyl-borate).

In the crystal structure of the title salt, C17H32N4 (2+)·2C24H20B(-), the C-N bond lengths in the CN3 unit of the guanidinium ion are 1.323 (4), 1.336 (5) and 1.

N,N,N',N'-Tetra-methyl-N''-[3-(trimethyl-aza-nium-yl)prop-yl]guanidinium bis-(tetra-phenyl-borate) acetone disolvate.

In the title solvated salt, C11H28N4(2+)·2C24H20B(-)·2C3H6O, the C-N bond lengths in the central CN3 unit of the guanidinium ion are 1.3331 (16), 1.3407 (16) and 1.

N-(Diphenyl-carbamo-yl)-N,N',N',N'',N''-penta-methyl-guanidinium tetra-phenyl-borate.

In the title salt, C19H25N4O(+)·C24H20B(-), the C=N and C-N bond lengths in the CN3 unit are 1.3327 (8)/1.3364 (9) and 1.

N,N,N',N'-Tetra-methyl-guanidinium tetra-phenyl-borate.

In the title salt, C5H14N3(+)·C24H20B(-), the C-N bond lengths in the central CN3 unit are 1.3322 (11), 1.3385 (12) and 1.

Morpholine-4-carboxamidinium ethyl carbonate.

The asymmetric unit of the title salt, C5H12N3O(+)·C3H5O3(-), contains two carboxamidinium and two ethyl carbonate ions. In the crystal, the C-N bond lengths in the central CN3 units of the cations range between 1.324 (2) and 1.

Piperidine-1-carboxamidinium ethyl carbonate.

In the title salt, C6H14N3(+)·C3H5O3(-), the C-N bond lengths in the central CN3 unit of the carboxamidinium cation are 1.3262 (18), 1.3359 (18) and 1.