Ionic liquids such as 1,3-dialkylimidazolium salts make excellent catalysts and solvents for synthesis of dialkyl 2-(dialkoxyphosphoryl)-3-(1-oxo-1-H-phthalazin-2-yl)succinates from 2H-phthalazin-1-one, dialkyl acetylenedicarboxylates, and trialkyl phosphites. Under similar conditions, triphenyl phosphite led to dialkyl 2-(diphenoxyphosphoryl)-3-(1-oxo-1-H-phthalazin-2-yl)succinates. The ionic ...

Anthropogenic toxic vapour and gases are a worldwide threat for human health to the environment. Therefore, it is crucial develop highly sensitive devices that guarantee their rapid detection. Here, we prepared redox-switchable colloids by in-situ reduction of 2,3,5-triphenyl-2H-tetrazolium (TTC) into triphenyl formazan (TF) stabilised with Pluronic F127 in aqueous media. The were readily embed...

The title compound, C(30)H(27)O(8)P (2), was formed as one of two products {(1) [Krawczyk et al. (2010 ▶). Acta Cryst. E66 (cv2752)] and (2)} in the reaction of dimethyl acetyl-enedicarboxyl-ate with triphenyl-phosphine. The mol-ecule of (2) consists of a five-membered carbocyclic ring. The P atom is a part of a triphenylphosphoranylidene substituent. In contrast to (1), the five-membered ring ...

Reaction of [Ru(Tp)Cl(PPh(3))(2)] (Tp = hydridotrispyrazolyl-borate) with ammonium dithio-benzoate in methanol leads to the formation of the title compound, [Ru(C(9)H(10)BN(6))(C(7)H(5)S(2))(C(18)H(15)P)]. In the crystal structure, the Ru atom is coordinated by three N atoms of the Tp ligand, one P atom of the triphenyl-phosphine ligand and the two S atoms of the dithio-benzoate ligand within a...

The toluene solution structure of an N-lithio(triphenyl)phosphazene (Ph(3)PNLi) mixed aggregate with lithium bromide (LiBr), 5, has been elucidated for the first time based on multinuclear magnetic resonance measurements ((1)H, (6)Li, (7)Li, (13)C and (31)P). The structure consist of two dimers [Li(mu-Z)](2) (Z= Br, NPR(3)) linked through LiX (X= N, Br) bridges. This arrangement is a cubane-lik...

In the title compound, [(Ph(3)P)(2)N](+)·[Cl-H-Cl](-) or C(36)H(30)NP(2) (+)·Cl(2)H(-), the H atom of the [Cl-H-Cl](-) anion and the N atom of the [(Ph(3)P)(2)N](+) cation are located on a twofold axis, yielding overall symmetry 2 for both the cation and the anion. The central P-N-P angle [144.12 (13)°] of the cation is in the expected range and indicates only weak cation-anion inter-actions. T...

In the title mol-ecule, C(27)H(19)FN(2), the imidazole ring is essentially planar [maximum deviation = 0.004 (1) Å] and makes dihedral angles of 62.80 (6), 36.98 (6), 33.16 (6) and 46.24 (6)°, respectively, with the substituent rings in the 1-, 2-, 4- and 5-positions. No classical hydrogen bonds are observed in the crystal structure.

The dioxaphospho-lane ring in the title compound, C(20)H(17)O(3)P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face π-π inter-actions, instead weak C-H⋯π inter-actions occur between adjacent mol-ecules. The methine H atoms on the dioxaphospho-lane ring form weak C-H⋯O hydrogen bonds to the oxide group of an adjacent mol-ec...

In the title salt, C(19)H(15)N(4) (+)·C(24)H(20)B(-), the tetra-phenyl-borate anion is in a tetra-hedral geometry around the B atom [C-B-C angles of 107.10 (9)-111.79 (9)°]. In the cation, the tetra-zole ring makes dihedral angles of 3.04 (7), 51.75 (7) and 51.13 (7)° with the attached phenyl rings. In the crystal, C-H⋯π inter-actions link the cations and anions into ion pairs.