Self-assembly of p-nitro NCN-pincer palladium complexes into dimers through electron donor-acceptor interactions

Organometallics

Volumn 22, Issue 1, 2003, Pages 27-29

  Slagt, Martijn Q ^a   Dijkstra, Harm P ^a   McDonald, Aidan ^a   Klein Gebbink, Robertus J M ^a   Lutz, Martin ^b   Ellis, Dianne D ^b   Mills, Allison M ^b   Spek, Anthony L ^b   Van Koten, Gerard ^a  

^a UTRECHT UNIVERSITY   (Netherlands)

^b UTRECHT UNIVERSITY   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

COMPLEXATION; CRYSTAL GROWTH; DIFFUSION; DIMERS; ELECTRON ENERGY LEVELS; HYDROGEN BONDS; MOLECULAR DYNAMICS; SELF ASSEMBLY; SUBSTITUTION REACTIONS; SUPRAMOLECULAR CHEMISTRY;

ELECTRON ACCEPTOR; ELECTRON DONOR; PINCER PALLADIUM COMPLEXES; PLATINUM ANALOGUES;

PALLADIUM COMPOUNDS;

EID: 0037421476     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om020743o     Document Type: Article

References (24)

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8. 2.
9. Selected bond lengths (Å), angles (deg), and dihedral angles (deg) for 1a: Pd1-C1 = 1.9131(18), Pd1-N1 = 2.1018(15), Pd1-N2 = 2.1007(15), Pd1-Cl1 = 2.4277(5); C1-Pd1-N1 = 82.48(7), C1-Pd1-N2 = 82.49(7), C1-Pd1-Cl1 = 172.81(5), N1-Pd1-N2 = 163.56(6); Pd1-N1-C7-C2 = 23.75(18), Pd1-N2-C10-C6 = -17.72(17). Selected bond lengths (Å), angles (deg), and dihedral angles (deg) for 1b: Pd1-C1 = 1.913(2), Pd1-N1 = 2.107(2), Pd1-N2 = 2.105(2), Pd1-Br1 = 2.5516(3); C1-Pd1-N1 = 82.41(9), C1-Pd1-N2 = 82.33(9), C1-Pd1-Br1 = 172.10(7), N1-Pd1-N2 = 163.58(8); Pd1-N1-C7-C2 = -25.0(2), Pd1-N2-C10-C6 = 17.4(2).
10. (a) Albrecht, M.; Lutz, M.; Schreurs, A. M. M.; Lutz, E. T. H.; Spek, A. L.; van Koten, G. J. Chem. Soc., Dalton Trans. 2000 3797-3804.
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13. Bondi, A. J. Phys. Chem. 1964, 68, 441.
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19. Gossage, R. A.; Ryabov, A. D.; Spek, A. L.; Stufkens, D. J.; van Beek, J. A. M.; van Eldik, R.; van Koten, G. J. Am. Chem. Soc. 1999, 121, 2488-2497.
20. Selected bond lengths (Å), angles (deg), and dihedral angles (deg) for 1c are as follows. Residue 1: Pd1-C11 = 1.919(2), Pd1-N11 = 2.0908(17), Pd1-N21 = 2.1054(17), Pd1-N41 = 2.1184(19); C11-Pd1-N11 = 82.45(8), C11-Pd1-N21 = 82.06(8), C11-Pd1-N41 = 177.50(8), N11-Pd1-N21 = 162.79(7); Pd1-N11-C71-C21 = -23.6-(2), Pd1-N21-C101-C61 = 21.6(2), N11-Pd1-N41-O41 = -67.11-(17). Residue 2: N12-Pd2-N42-O42 = -83.13(17). Residue 3: Pd3-C13 = 1.917(2), Pd3-N13 = 2.1052(16), Pd3-N23 = 2.0968(17), Pd3-N43 = 2.1250(19); C13-Pd3-N13 = 81.49(8), C13-Pd3-N23 = 82.09(8), C13-d3-N43 = 177.43(8), N13-Pd3-N23 = 163.45(7); Pd3-N13-C73-C23 = 25.61(19), Pd3-N23-C103-C63 = 27.9(2), N13-Pd3-N43-O43 = 94.42(17).
21. x2-y2 orbital on the palladium atom.
22. Selected bond lengths (Å), angles (deg), and dihedral angles (deg) for 2 (residue 2): Pt2-C12 = 1.937(4), Pt2-N12 = 2.105(3), Pt2-N22 = 2.099(2) Pt2-Br12 = 2.5211(4); C12-Pt2-N12 = 81.78(11), C12-Pt2-N22 = 81.46(11), C12-Pt2-Br12 = 175.56(8), N12-Pt2-N22 = 163.20(11); Pt2-N12-C72-C22 = -31.5(3) Pt2-N22-C102-C62 = -34.0(3).
23. The monomeric structure found for complex 2 is general for NCN-pincer platinum complexes. This further attenuates the finding that p-nitro-functionalized NCN-pincer palladium complexes form dimers in the solid state.
24. 2 results in a small shift of this band to 379 nm, combined with a small decrease in intensity.