Mechanistic insights into diversified photoluminescence behaviours of BF complexes of -benzoyl 2-aminobenzothiazoles.

Many BF complexes of heteroaromatics are well known for their dual-state emission (DSE) properties. However, AIE and ACQ effects have also been observed in certain cases. To date, no rational explanations have been proposed for these uncommon photoluminescence (PL) behaviours.

(E)-2-(4-Diethyl-amino-2-hydroxy-benzyl-idene-amino)benzonitrile.

The mol-ecule of the title compound, C(18)H(19)N(3)O, displays a trans configuration with respect to the C=N double bond. The dihedral angle between the planes of the two benzene rings is 2.62 (11)°.

Bis[μ(2)-bis-(diphenyl-phosphino)methane]bis-(μ(2)-ethane-1,2-dithiol-ato)-μ(4)-sulfido-μ(2)-sulfido-disulfidodimolybdenum(V)disilver(I) dimethyl-formamide tris-olvate.

Treatment of [Et(4)N](2)[(edt)(2)Mo(2)S(2)(μ-S)(2)] (edt = ethane-dithio-l-ate) with two equivalents of Ag(CH(3)CN)(4)ClO(4) in the presence of bis-(diphenyl-phosphino)methane (dppm) ligand gives rise to the title tetra-nuclear cluster, [Ag(2)Mo(2)(C(2)H(4)S(2))(2)S(4)(C(25)H(22)P(2))(2)]·3C(3)H(7)NO. The complex mol-ecule and one of the dimethyl-formamide (DMF) solvent mol-ecules occupy special positions on a mirror plane. The mol-ecular structure of the complex may be visualized as being built of [Mo(2)S(2)(μ-S)(2)(edt)(2)](2-) dianions and [Ag(2)(dppm)(2)](2+) dications connected by two Ag-μ-S(edt) and two Ag-μ(4)-S bonds.

catena-Poly[[(nitrato-κO,O')silver(I)]-μ-1,2-bis-(diphenyl-phosphino)ethane-κP:P'].

In the title chain compound, [Ag(NO(3))(C(26)H(24)P(2))](n), the bis-(diphenyl-phosphino)ethane (dppe) units link the Ag(+) ions into chains along [001]. A nitrate anion is coordinated to the Ag atom. There is a centre of symmetry at the mid-point of the ethane C-C bond and a twofold rotation axis passes through the Ag, N and terminal O atoms.