Hydro­gen bonding in bis­(tri­phenyl­phosphine‐P)­iminium hydrogen­sulfate chloro­form solvate

The title compound, C₃₆H₃₀NP₂⁺·HSO₄^?·CHCl₃, consists of discrete ions and well separated chloroform solvate molecules. The central feature of the structure is O—H?O hydrogen bonding between two hydrogensulfate ions related by a crystallographic inversion centre. The chloroform solvate molecule takes part in a well defined C—H?O hydrogen bond.     

trans‐Chloro­(methyl)­bis­(tri­cyclo­hexyl­phosphine)­platinum(II)

The crystal structure of the title compound, [PtCl(CH₃)(C₁₈H₃₃P)₂], is isostructural with various platinum(II) and palladium(II) complexes containing two bulky tri­cyclo­hexyl­phosphine ligands in a trans orientation. The Pt atom resides on an inversion centre, resulting in a 50% statistical disorder in the chloro and methyl positions. The most significant geometrical parameters are Pt—P 2.3431 (8), Pt—­Cl 2.440 (4) and Pt—C1 2.179 (13) Å, and P—Pt—P 180, P—Pt—Cl 89.15 (12) and 90.85 (12), and C—Pt—Cl 172.7 (5)°. The effective and Tolman cone angles for the tricyclohexylphosphine ligands were calculated as 160 and 162°, respectively.     

cis‐Di­chloro­(di­methyl­aminomethyl­ene)­(tri­phenyl­phosphine)palladium(II) acetone solvate

The synthesis and X‐ray structural analysis of the title compound, [PdCl₂(C₃H₇N)(C₁₈H₁₅P)]·C₃H₆O, are described. The crystal structure contains discrete monomeric mol­ecules of the carbene complex and solvent mol­ecules separated by normal van der Waals distances. The Pd atom is four‐coordinate in an essentially square‐planar environment, with the chlorine ligands mutually cis; Pd—P = 2.2495 (7), Pd—Cl = 2.3508 (7) and 2.3600 (7), Pd—C 1.948 (2) and N—C(carbene) 1.274 (3) Å.     

trans‐Chloro(2‐nitro­benzene­thiolato‐S)­bis­(tri­phenyl­phosphine‐P)palladium(II) mono­acetone solvate

Molecules of the title compound, [PdCl(C₆H₄NO₂S)(PPh₃)₂]·­C₃H₆O, exhibit a slight distortion from exact planarity at the Pd atom towards tetrahedral, with P—Pd—P and Cl—Pd—S angles of 174.98 (3) and 174.19 (3)°, respectively. The Pd—Cl and Pd—S bonds are, respectively, long [2.3550 (11) Å] and short [2.3020 (12) Å] for their types; the S—C bond is also very short [1.744 (4) Å]. The solvating acetone mol­ecule is linked to one of the phosphine ligands by means of a C—H?O hydrogen bond.     

cis‐Di­chloro­bis­(triphenyphosphite‐P)palladium(II)

In the title compound, [PdCl₂{P(OPh)₃}₂], the Pd^II centre shows slightly distorted square‐planar geometry, with the two chloro ligands in cis positions.     

Chloro­bis­(tri­phenyl­phosphine)­nickel(I)

Crystals of the title compound, [NiCl(C₁₈H₁₅P)₂], contain one mol­ecule per asymmetric unit with no short intermolecular interactions. This is noteworthy since previous studies have reported that the formally 15‐electron species oligomerizes in the solid state. The nickel(I) centre has a distorted trigonal–planar coordination geometry, the origin of which is suggested to be electronic in nature.     

trans‐Di­chlorotetrakis(4‐methyl­pyridine)­silicon bis­(triiodide) chloro­form solvate

At 173 K, the dication of the title compound, C₂₄H₂₈Cl₂N₄Si²⁺·2I₃^?·CHCl₃, is located on a crystallographic fourfold rotation axis. The chloro ligands occupy axial positions and the four 4‐methyl­pyridine ligands lie in the equatorial plane. The almost linear I₃^? ion is located on a crystallographic mirror plane and displays two significantly different I—I bond lengths. Furthermore, chloro­form mol­ecules, which are disordered about a centre of inversion, fill the remaining gaps in the crystal structure.     

Di­chloro­(norborna­diene)­platinum(II): a comparison with di­chloro­(cyclo­octa­diene)­platinum(II)

The crystal structure of the title compound, (bi­cyclo­[2.2.1]­hepta‐2,5‐diene)­di­chloro­platinum(II), [PtCl₂(C₇H₈)], has been determined from single‐crystal X‐ray analysis. The coordination sphere about the Pt atom is pseudo‐square planar, with shorter Pt—C distances than in the corresponding di­chloro­(cyclo­octa­diene)­platinum(II) complex.     

(N,N‐Di­iso­propyl­di­thio­carbamato‐S,S′)­bis­(tri­phenyl­phosphine‐P)­gold(I) butane solvate

In the crystal structure of the title complex, [Au(C₇H₁₄NS₂)(C₁₈H₁₅P)₂]·C₄H₁₀, the Au atom is in a distorted tetra­hedral environment consisting of the two P atoms of the tri­phenyl­phosphine ligands and the two S atoms of the diiso­propyl­thio­carbamate ligand. The molecular structure and packing are stablized by van der Waals interactions.     

Chloro­bis­(tri­phenyl­phosphine)­nickel(I) tetra­hydro­furan solvate and an unsolvated trigonal phase of chloro­tris­(tri­phenyl­phosphine)­nickel(I)

In [NiCl(C₁₈H₁₅P)₂]·C₄H₈O, the Ni atom is coordinated by three ligands in a distorted trigonal–planar configuration, with a P—Ni—P angle of 111.52 (2)°. In [NiCl(C₁₈H₁₅P)₃], there are three independent mol­ecules in the asymmetric unit, with each Ni—Cl bond on a crystallographic threefold rotation axis. Each Ni centre is tetrahedrally bound. The Ni atoms in both compounds have a d⁹ configuration and a formal oxidation state of Ni^I. A comparison is made between the form of [NiCl(PPh₃)₃] presented here and that of a known toluene solvate.     

[N,N‐Bis(2‐hydroxy­ethyl)­di­thio­car­bamato‐S]­bis­(tri­phenyl­phosphine‐P)­copper(I) tri­phenyl­phosphine solvate

In the title compound, [Cu(C₅H₁₀NO₂S₂)(C₁₈H₁₅P)₂]·C₁₈H₁₅P, the Cu atom is in a distorted tetrahedral coordination, with two tri­phenyl­phosphine P atoms and two S atoms from an N,N‐bis(2‐hydroxy­ethyl)­di­thio­carbamate ligand occupying the vertices. The crystal structure is characterized by alternate layers of complex and tri­phenyl­phosphine mol­ecules.     

trans‐[1,3‐Bis(2,4‐di­methyl­phenyl)­imidazolidin‐2‐yl­idene]­di­chloro­(tri­phenyl­phosphine‐κP)­palladium(II)

The title complex, [PdCl₂(C₁₉H₂₂N₂)(C₁₈H₁₅P)], shows slightly distorted square‐planar coordination of the palladium(II) metal center. The Pd—C bond distance between the N‐heterocyclic ligand and the metal atom is 2.008 (3) Å. The dihedral angle between the two di­methyl­phenyl ring planes is 33.17 (13)°.     

The trans influence in mer‐tri­chloro­nitridobis­(tri­phenyl­arsine)­ruthenium(VI)

The title compound, mer‐[RuCl₃N(C₁₈H₁₅As)₂], is the first structurally characterized example of a nitride complex in which ruthenium is six‐coordinated to monodentate ligands only. The Ru[triple‐bond]N bond length [1.6161 (15) Å] is relatively long, and the trans influence of the nitride ligand is reflected by the difference between the Ru—Cl_trans and Ru—Cl_cis bond lengths [0.1234 (4) Å]. The N—Ru—Cl_trans axis is sited on a twofold axis.     

Di­chloro­bis­(di­benzyl­amino)­bis­(tetra­hydro­furan)­zirconium(IV) toluene hemisolvate

The title complex, [ZrCl₂(C₄H₈O)₂(C₁₄H₁₄N)₂]·0.5C₇H₈, was prepared in an unusual manner by utilizing [Mg{N(CH₂Ph)₂}₂] as a ligand transfer reagent. The Zr atom lies in a distorted octahedral environment where steric repulsion from the large di­benzyl­amino ligands leads to a widening of the N—Zr—N angle [99.95 (9)°] and corresponding compression of other angles [Cl—Zr—Cl 160.95 (3)° and O—Zr—O 78.22 (7)°]. This distortion is compared with those found in the previously determined structures of the di­methyl­amino and diethyl­amino analogues.     

Di­chloro­bis­[2‐(o‐tolyl­iminio­methyl)­phenolato‐O]­zinc(II)

In the mononuclear title compound, [ZnCl₂(C₁₄H₁₃NO)₂], the Zn^II ion is located on a twofold axis of the monoclinic space group so that the whole mol­ecule has a twofold symmetry. The Zn^II ion has a tetrahedral coordination consisting of two chlorine ions and the O atoms of the ligands. The coordination angles around zinc have values between 102.89 (8) (O—Zn—O) and 115.83 (5)° (Cl—Zn—O). The Zn—O and Zn—Cl bond lengths are 1.977 (2) and 2.2401 (7) Å, respectively. There are intra‐ and intermolecular hydrogen bonds in the structure.     

(Aceto­nitrile‐N)(o‐benzo­quinone di­imine‐N,N′)­chloro‐trans‐bis­(tri­phenyl­phosphine‐P)­ruthenium(II) hexa­fluoro­phosphate 0.25‐hydrate

The Ru atom in the title compound, [RuCl(CH₃CN){P(C₆H₅)₃}₂{C₆H₄(NH)₂}]PF₆·0.25H₂O, has a six‐coordinate octahedral geometry, with a trans arrangement of the tri­phenyl­phosphine groups. The asymmetric unit contains two complex mol­ecules and a partially occupied water site. Principal dimensions include Ru—N 1.958 (4)–2.044 (5), Ru—P 2.3897 (16)–2.4092 (15), and Ru—Cl 2.4280 (15) and 2.4295 (16) Å     

Di­chloro­bis(1,2‐phenyl­enedi­amine)­nickel(II)

The title compound, [NiCl₂(C₆H₈N₂)₂], contains centrosymmetric mol­ecules with two phenyl­ene­di­amine ligands coordinated in a bidentate fashion. The Ni—N distances are 2.088 (1) and 2.096 (1) Å, and the Ni—Cl distance of 2.4635 (4) Å. The plane of each phenyl­enedi­amine mol­ecule makes a dihedral angle of 26.53 (7)° with the NiN₄ plane. Extensive hydrogen bonding leads to distinct cleavage in the bc plane.     

Bis­[bis­(di­phenyl­phosphino­methyl)­phenyl­phosphine]­di­chloro­tetra­gold(I) bis­[chloro­tris­(penta­fluoro­phenyl)­aurate(III)]

The cation of the title compound, [Au₄(PPh₂CH₂PPhCH₂PPh₂)₂Cl₂][Au(C₆F₅)₃Cl]₂ or [Au₄Cl₂(C₃₂H₂₉P₃)₂][AuCl(C₆F₅)₃]₂, displays a rhomboidal geometry for the Au atoms, with short Au?Au distances of 3.104 (2) and 3.185 (1) Å; the linear coordination at the Au^I atoms is distorted: P—Au—P 164.7 (2)° and P—Au—Cl 170.67 (11)°. The anion shows the expected square‐planar geometry at Au^III, with the Au atom 0.022 (5) Å out of the plane of the four donor atoms.     

trans‐Di­iodo­bis(1,3,5‐tri­aza‐7‐phosphaadamantane)­platinum(II)

The crystal structure of the title compound, trans‐[PtI₂(C₆H₁₂N₃P)₂], describes one of the few platinum(II) complexes containing two of the water‐soluble 1,3,5‐tri­aza‐7‐phosphaadamantane ligands reported to date. The complex crystallizes on an inversion centre with the most important bond lengths and angles being Pt—P 2.3128 (12) Å, Pt—I 2.6022 (6) Å, P—Pt—I 90.94 (3)° and P′—Pt—I 89.06 (3)°.     

Bis­(aceto­nitrile‐N)(o‐benzoquinone di­imine‐N,N′)‐trans‐bis­(tri­phenyl­phosphine‐P)­ruthenium(II) bis(hexa­fluoro­phosphate) methanol solvate

The title complex, [Ru(C₂H₃N)₂(C₆H₆N₂)(C₁₈H₁₅P)₂](PF₆)₂.CH₄O, is the third of a series of ruthenium complexes containing two tri­phenyl­phosphine groups in a trans arrangement, o‐benzoquinone di­imine and two other non‐redox active ligands to been characterized. The effect of electron donor–acceptor properties of the two non‐redox active ligands does not change the quinone arrangement for the o‐benzoquinone di­imine ligand, as can be seen from the bond distances of the quinone ring. The asymmetric unit contains half a mol­ecule of complex cation (on a twofold rotation axis), one hexa­fluoro­phosphate anion and half a mol­ecule of methanol in a general position close to a twofold rotation axis.