Crystal structure of bromidobis(naphthalen- 1-yl)antimony(III)

In the title compound, [SbBr(C10H7)2], the SbIII atom has a distorted trigonal–pyramidal coordination geometry and the planes of the two naphthalene ring systems make a dihedral angle of 80.26 (18)�. An intramolecular C—H� � �Br hydrogen bond forms an S(5) ring motif. In the crystal, weak C—H� � �Br interactions link the molecules into helical chains along the baxis direction

[μ2-Bis(diphenylphosphanyl)hexane]bis[undecacarbonyl-triangulo-triruthenium(3 Ru—Ru)] hexane monosolvate: crystal structure and Hirshfeld surface analysis

In the title cluster complex hexane solvate, [Ru6(C30H32P2)(CO)22]·C6H14, two Ru3(CO)11 fragments are linked by a Ph2P(CH2)6PPh2 bridge with the P atoms equatorially disposed with respect to the Ru3 triangle in each case; the hexane solvent mol­ecule is statistically disordered. The Ru...Ru distances span a relatively narrow range, i.e. 2.8378 (4) to 2.8644 (4) Å. The hexyl chain within the bridge has an all-trans conformation. In the mol­ecular packing, C—H...O inter­actions between cluster mol­ecules, and between cluster and hexane solvent mol­ecules lead to a three-dimensional architecture. In addition, there are a large number of C[triple bond]O...π(arene) inter­actions in the crystal. The importance of the carbonyl groups in establishing the packing is emphasized by the contribution of 53.4% to the Hirshfeld surface by O...H/H...O contacts

Bis([μ-bis­(diphenyl­phosphino)methane-1:2κ2 P:P′]nona­carbonyl-1κ3 C,2κ3 C,3κ3 C-{tris­[4-(methyl­sulfan­yl)phen­yl]arsine-3κAs}-triangulo-triruthenium(0)) dichloro­methane monosolvate

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru3(C21H21AsS3)(C25H22P2)(CO)9]·CH2Cl2, consists of one triangulo-triruthenium complex mol­ecule and one half of a dichloro­methane mol­ecule which lies across a crystallographic inversion center, leading to the disorder of this mol­ecule over two positions of equal occupancy. The bis­(diphenyl­phosphino)methane ligand bridges an Ru—Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru3 triangle. Each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three arsine-substituted benzene rings make dihedral angles of 82.69 (9), 70.43 (9) and 89.45 (9)° with each other. The dihedral angles between the two benzene rings are 85.14 (11) and 77.61 (10)° for the two diphenyl­phosphino groups. In the crystal packing, mol­ecules are linked together into dimers via inter­molecular C—H⋯O hydrogen bonds and these dimers are stacked along the a axis. Weak inter­molecular C—H⋯π inter­actions are also present

Bis([μ-bis­(diphenyl­arsino)methane-1:2κ2 As:As’]nona­carbonyl-1κ3 C,2κ3 C,3κ3 C-{tris­[4-(methyl­sulfan­yl)phen­yl]arsine-3κAs}-triangulo-triruthenium(0)) dichloro­methane monosolvate

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru3(C25H22As2)(C21H21AsS3)(CO)9]·CH2Cl2, consists of one triangulo-triruthenium complex mol­ecule and one half of a dichloro­methane mol­ecule which lies across a crystallographic inversion center, leading to the disorder of this mol­ecule over two positions of equal occupancy. The bis­(diphenyl­arsino)methane ligand bridges an Ru—Ru bond and the monodentate arsine ligand bonds to the third Ru atom. All arsine ligands are equatorial with respect to the Ru3 triangle. Each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three methyl­sulfanyl-substituted benzene rings make dihedral angles of 70.02 (8), 82.85 (9) and 89.49 (8)° with each other. The dihedral angles between the two phenyl rings are 78.25 (9) and 86.59 (9)° for the two diphenyl­arsino groups. In the crystal, weak inter­molecular C—H⋯π inter­actions are observed

Tris[4-(methyl­sulfan­yl)phen­yl]arsine

In the title compound, C21H21AsS3, the three benzene rings make dihedral angles of 88.41 (10), 87.75 (9) and 74.74 (10)° with each other. The methyl­sulfanyl groups are roughly coplanar with their attached benzene rings [C—S—C—C torsion angles = −7.6 (2), 11.2 (2) and 4.1 (2)°]. In the crystal, weak C—H⋯π inter­actions link the mol­ecules

(Benzyldiphenylphosphane-1jP)-[l-bis(diphenylphosphanyl)methane-2:3j2P:P0]nonacarbonyl- 1j3C,2j3C,3j3C-triangulotriruthenium(0)

The asymmetric unit of the title compound, [Ru3(C19H17P)(C25H22P2)(CO)9], consists of two independent molecules. The bis(diphenylphosphanyl)methane ligand bridges an Ru—Ru bond and the benzyldiphenylphosphane ligand binds to the third Ru atom. The Ru—Ru bond cis to the benzyldiphenylphosphane ligand is the longest of the three Ru—Ru bonds in both molecules. In the crystal, molecules are linked by C—H� � �O hydrogen bonds, forming layers parallel to the ac plane. C—H� � �� contacts further stabilize the crystal packing

[μ-Bis(diphenyl­arsino)methane-1:2κ2 As:As′][bis­(4-methoxy­phen­yl)phenyl­phosphine-3κP]-nona­carbonyl-1κ3 C,2κ3 C,3κ3 C-triangulo-tri­ruthenium(0) dichloro­methane 0.15-solvate

The asymmetric unit of the title triangulo-triruthenium compound, [Ru3(C25H22As2)(C20H19O2P)(CO)9]·0.15CH2Cl2, contains one mol­ecule of the triangulo-triruthenium complex and one partially occupied dichloro­methane solvent mol­ecule. The dichloro­methane solvent lies across a crystallographic inversion center leading to the mol­ecule being disordered over two positions of equal occupancy. The bis­(diphenyl­arsino)methane ligand bridges an Ru—Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine ligands are equatorial with respect to the Ru3 triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three phospho­rus-bound benzene rings make dihedral angles of 72.7 (3), 80.9 (3) and 70.8 (2)° with each other. The dihedral angles between the two benzene rings are 79.9 (3) and 81.5 (2)° for the two diphenyl­arsino groups

Bis{[μ-bis­(diphenyl­arsino)methane-1:2κ2 As:As′]nona­carbonyl-1κ3 C,2κ3 C,3κ3 C-[tris­(4-chloro­phen­yl)phosphine-3κP]-triangulo-triruthenium(0)} chloro­form monosolvate

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru3(C25H22As2)(C18H12Cl3P)(CO)9]·CHCl3, consists of two mol­ecules (A and B) of the triangulo-triruthenium complex and one mol­ecule of chloro­form solvent. The bis­(diphenyl­arsino)methane ligand bridges an Ru—Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the phosphine and arsine ligands are equatorial with respect to the Ru3 triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three phosphine-substituted benzene rings make dihedral angles of 73.5 (3), 57.2 (3) and 75.7 (3)° with each other in mol­ecule A, while these angles are 60.7 (3), 86.8 (3) and 54.9 (3)° in mol­ecule B. The dihedral angles between the two benzene rings are 87.3 (3) and 89.6 (3)° for the two diphenyl­arsino groups in mol­ecule A and 85.6 (3) and 87.7 (3)° in mol­ecule B. In the crystal packing, the mol­ecules are linked into a three-dimensional framework via inter­molecular C—H⋯O and C—H⋯Cl hydrogen bonds. Weak inter­molecular C—H⋯π inter­actions furture stabilize the crystal structure. The crystal studied was an inversion twin, the refined ratio of twin components being 0.480 (7):0.520 (7)

Oil palm trunk polymer composite: Morphology, water absorption, and thickness swelling behaviours.

In this research, impregnated oil palm trunks (OPT) and polymer composites were prepared from a combination of dried oil palm trunks with phenol formaldehyde (PF) and urea formaldehyde (UF) resin in different resin percentages using an impregnation method. Time of impregnation was a parameter used to control the percentage of resin content in the oil palm trunks. These studies investigated the effect of resin content and types of resin on the physical properties of impregnated OPT. Water absorption tests revealed that OPT polymer composite with 75% PF resin loading had increases of 21% and 26% for OPT polymer composites with 75% UF resin loading. The thickness swelling of OPT polymer composites with 75% PF resin loading exhibited the lowest value of 3.30% as compared with OPT polymer composite with 75% UF resin loading, which exhibited a value of 4.30%. The dimensional stability of the OPT polymer composites with the highest resin loading was slightly lower when compared to rubberwood. Scanning electron micrographs show that PF resin placement in OPT polymer composites was better, and resin penetration retained the original dried OPT structure

Bis{[μ-bis­(diphenyl­arsino)methane-1:2κ2 As:As′]nona­carbonyl-1κ3 C,2κ3 C,3κ3 C-[tris­(4-methoxy­phen­yl)arsine-3κAs]-triangulo-triruthenium(0)} dichloro­methane solvate

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru3(C25H22As2)(C21H21AsO3)(CO)9]·CH2Cl2, contains one triangulo-triruthenium complex mol­ecule and one half of the dichloro­methane solvent. The dichloro­methane solvent lies across a crystallographic inversion center leading to the mol­ecule being disordered over two positions of equal occupancy. The bis­(diphenyl­arsino)methane ligand bridges an Ru—Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine ligands are equatorial with respect to the Ru3 triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The trimethoxy­phenyl­arsino benzene rings make dihedral angles of 83.01 (8), 65.81 (8) and 76.20 (8)° with each other. The dihedral angles between the two benzene rings are 82.69 (9) and 78.83 (9)° for the two diphenyl­arsino groups. In the crystal packing, the mol­ecules are stacked along the a axis and weak inter­molecular C—H⋯π inter­actions stabilize the crystal structure