Carbonyl(triphenylarsine)(tropolonato)rhodium(I)

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cis-Diphenylbis(1,3,5-triaza-7-phosphaadamantane-ĸP)-platinum(II)

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Trans-Carbonylchlorobis[tris(2,6-dimethyl- phenyl)phosphito]rhodium(I)

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trans-Dibromidobis[diphen­yl(p-tol­yl)phosphine]palladium(II)

In the title compound, [PdBr2(C19H17P)2], the PdII ion resides on a centre of symmetry and is coordinated by two Br anions [Pd—Br = 2.4266 (2) Å] and two P-donor ligands [Pd—P = 2.3462 (5) Å] in a slightly distorted square-planar geometry [P—Pd—Br = 93.528 (12)°]. Weak inter­molecular C—H⋯Br hydrogen bonds link mol­ecules into chains extended in [10]

trans-Carbonylchlorobis[tris(2-methyl- phenyl)phosphito]rhodium(I)

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trans-Dibromidobis(tri-p-tolyl­arsine)palladium(II)

In the title compound, [PdBr2(C21H21As)2], the PdII ion, residing on a centre of symmetry, is coordinated by two As donor atoms [Pd—As = 2.4276 (2) Å] and two Br anions [Pd—Br = 2.4194 (2) Å] in a distorted square-planar geometry [Br—Pd—As = 87.786 (7)°]. A weak intra­molecular C—H⋯Br inter­action occurs. In the crystal structure, inter­molecular C—H⋯Br inter­actions are observed

Triferrocenylphosphine oxide mono-hydrate

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Kinetic and High-Pressure Mechanistic Investigation of the Aqua Substitution in the Trans-Aquaoxotetracyano Complexes of Re(V) and Tc(V): Some Implications for Nuclear Medicine

A kinetic study of the aqua substitution in the [TcO(OH2)(CN)4]− complex by different thiourea ligands (TU = thiourea, NMTU = N-methyl thiourea, NNDMTU = N, N′-dimethylthiourea) yielded second-order formation rate constants (25°C) as follows [NNDMTU, NMTU, TU, respectively]: kf = 11.5 ± 0.1, 11.38 ± 0.04, and 7.4 ± 0.1 M−1s−1, with activation parameters: Δ H#kf : 55 ± 2, 42 ± 3, 35 ± 5 kJ mol−1; ΔS#kf : − 40 ± 8, − 84 ± 11, − 110 ± 17 J K−1mol−1. A subsequent high-pressure investigation of the aqua substitution in the [ReO(OH2)(CN)4]− and [TcO(OH2)(CN)4]− complexes by selected entering ligands yielded ΔV#kf values as follows: Re(V): −1.7 ± 0.3(NCS−), −22.1 ± 0.9 (TU) and for Tc(V): −3.5 ± 0.3(NCS−), −14 ± 1 (NNDMTU), and −6.0 ± 0.5 (TU) cm3mol −1, respectively. These results point to an interchange associative mechanism for the negative NCS− as entering group but even a pure associative mechanism for the neutral thiourea ligands

N,N-Bis(diphenyl­phosphan­yl)cyclo­butanamine

In the title compound, C28H27NP2, the N atom adopts an almost planar geometry with the two P atoms and the C atom attached to it, with a distance of 0.066 (2) Å between the N atom and the C/P/P plane. The distorted trigonal–pyramidal geometry of the N atom is further illustrated by bond angles ranging between 115.22 (11) and 123.53 (8)°. Bond angles varying from 99.99 (9) to 108.07 (9) ° are indicative of the distorted pyramidal environment around the P atoms. An intra­molecular C—H⋯P hydrogen bond occurs. In the crystal, inter­molecular C—H⋯π inter­actions link the mol­ecules into a supra­molecular network

The crystal structure of cis-diaqua-bis (N-butyl-N-(pyridin-2-yl)pyridin-2-amine-κ2N,N′)cobalt(II)] dichloride trihydrate, C28H44Cl2N6O5Co

C28H44Cl2N6O5Co, triclinic, P 1 ‾ (no. 2), a = 11.20(2) Å, b = 12.70(3) Å, c = 12.80(4) Å, α = 100.30(12)°, β = 103.18(9)°, γ = 106.77(6)°, V = 1638(8) Å3, Z = 2, R gt (F) = 0.0372, wR ref (F2) = 0.0890, T = 100 K. CCDC no.: 2086847 The molecular structure is shown in figure (the chloride counter anions and uncoordinated water molecules are omitted for clarity). Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters