Abstract
The donor-acceptor complex [BeCl2(Ph2PCH 2PPh2)2] (1·2CH2Cl 2) was prepared from beryllium dichloride and bis(diphenylphosphanyl) methane in dichloromethane suspension to give colorless single crystals, which were characterized by X-ray diffraction, IR spectroscopy, and DFT calculations. Compound 1·2CH2Cl2 crystallizes monoclinically in space group C2/c with four formula units per unit cell. Lattice dimensions at 193(2) K: a = 2339.5(2), b = 916.7(1), c = 2415.4(2) pm, β = 97.15(1)° R1 = 0.0386. The structure of 1 consists of distorted tetrahedral molecules with site symmetry C2 and bond lengths Be-Cl of 196.8(2) pm and Be-P of 220.6(3) pm. Quantum chemical calculations at the RI-BP86/SV(P) level give a structure of 1, which is in very good agreement with the experimental one. The calculations predict that the bond dissociation energies of the first and second Ph2PCH2PPh2 ligand from 1 are De = 16.8 kcal·mol-1 and 24.3 kcal·mol-1, respectively.
Translated title of the contribution | [BeCl2(Ph2PCH2PPh2) 2] - A donor-acceptor complex of beryllium with the ligand bis(diphenylphosphanyl)methane |
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Original language | German |
Pages (from-to) | 1772-1775 |
Number of pages | 4 |
Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
Volume | 636 |
Issue number | 9-10 |
DOIs | |
State | Published - Sep 2010 |
Externally published | Yes |