Abdul Hamid Othman

Diaqua[2,6-diacetylpyridine bis(thiosemicarbazone)]manganese(II) Diperchlorate

The Mn atom in [Mn(C 11 H 15 N 7 S 2 )(H 2 O) 2 ](ClO 4 ) 2 is in a distorted pentagonal bipyramidal environment with three N and two S atoms of the open-chain ligand forming the pentagonal girdle and O atoms of the water molecules occupying the apical positions. The ClO 4 - ions are involved in hydrogen bonding with the H 2 O molecules and with the terminal amino groups of the ligand [3.002 (5) and 2.962 (8) A].

(N‐Pyrrolidinecarbodithioato‐S,S')bis(triphenylphosphine)silver(I)

In the title compound, [Ag(C 5 H 8 NS 2 )(C 18 H 15 P) 2 ], the Ag atom is tetrahedrally surrounded by the two P atoms of the triphenylphosphine groups and the two S atoms of the bidentate pyrrolidinecarbodithioate ligand. The coordination polyhedron is severely distorted ; the S-Ag-S angle is 68.15 (4)° and the remaining angles are in the range 107.23 (3)-124.43 (3)°. The pyrrolidine ring adopts an envelope conformation.

Hydrogen bis[(8-quinolinol-N-(8-quinolinolato-N,O)(triphenylphosphine-P)silver(I)] acetate monohydrate

The asymmetric unit of the title compound, [Ag 2 H-(C 9 H 6 NO) 2 (C 9 H 7 NO) 2 (C 18 H 15 P) 2 ](C 2 H 3 O 2 ).H 2 O, contains two exactly centrosymmetric [QHQ] + complex cations, Q = [Ag(PPh3)(C 9 H 6 NOH)(C 9 H 6 NO)]. The two electroneutral silver complex units, Q, in each cation are connected by a short hydrogen bond [O...O 2.452 (5) and 2.463 (6) A], with the proton lying at an inversion center. Each Ag atom has a distorted tetrahedral environment, bonding to two quinoline ligands and a PPh 3 ligand; both O and N atoms of the anionic quinolinol ligand are attached to the Ag atom, while in the neutral quinolinol ligand, the bonding is only through the N atom. The fourth coordination site is occupied by the P atom of a PPh 3 ligand. Some differences in the coordination of the two independent Ag atoms are observed. The [QHQ] + complex cations are linked by the trapped acetate ions through hydrogen bonding which also connects the water molecule to one of the acetate O atoms. In each [QHQ] + cation, there are intramolecular contacts between the Ag and the phenolic O atom of the neutral quinolinol moieties [Ag...O 2.827 (4) and 2.901(4) A].

(Thiocyanato-N)tris(triphenylphosphine)-silver(I) chloroform solvate

Crystals of [Ag(NCS)(C18H15P)3].CHCl3 consist of discrete [Ag(PPh3)3(NCS)] molecules, in which the Ag atom is tetrahedrally surrounded by three P atoms of the PPh3 groups and the N atom of the isothiocyanate ligand, and chloroform molecules. The coordination polyhedron around the Ag atom is distorted with angles at Ag ranging from 102.58 (10) to 114.73 (3)°. The Ag—N—C angle is 159.6 (3)°.

Crystal structures of 1-(2-hydroxyphenyl)-3-phenyl-1,3-propanedione and 1-(1,3-benzodioxol-5-yl)-3-(2,4-dimethoxyphenyl)-1,3-propanedione

Abstract1-(2-Hydroxyphenyl)-3-phenyl-1,3-propanedione crystallizes in the triclinic space group

αββα-3,4-Dimethyl-2,5-bis(3,4,5-trimethoxyphenyl)tetrahydrofuran

P\bar 1

Tris(N-cyclo­hexyl-N-methyl­di­thio­carbamato-S)antimony(III)

(a=5.4233(5),b=13.910(1),c=17.036(1) Å, α=68.311(6), β=80.854(7), γ=78.760(8)°) as two independent enolic tautomers in which the hydroxyl and phenolic protons are hydrogen bonded to the ketonic oxygen atom. The structure was refined toR=0.039 for 2085I≥3σ(I) reflections. 1-(1,3-Benzodioxol-5-yl)-3-(2,4-dimethoxyphenyl)-1,3-propanedione, which belongs to the triclinic