Heinemann FW (2007)
Publication Status: Published
Publication Type: Journal article
Publication year: 2007
Publisher: ROYAL SOC CHEMISTRY
Pages Range: 1697-1704
Journal Issue: 17
DOI: 10.1039/b700009j
The complex [PtMe2(dppa)], 1a, dppa = Ph2PNHPPh2, which has previously been prepared as a mixture with the dimeric form [Pt2Me4(mu-dppa)(2)], was synthesized in pure form by the reaction of [PtCl2( dppa)] with MeLi. The aryl analogue [Pt(p-MeC6H4)(2)(dppa)], 1b, was prepared by replacement of SMe2 in cis-[Pt(p-MeC6H4)(2)(SMe2)(2)] with dppa. The reaction of the chelate complexes 1 with one equiv. of dppa afforded the complexes [PtR2(dppa-P)(2)], R= Me, 2a and R = p-MeC6H4 2b. The reaction of [PtR2(dppa)], 1, with neat MeI gave the organoplatinum(IV) complexes [PtR2MeI(dppa)], R= Me, 5a and R = p-MeC6H4, 5b. The structure of 5a, determined by X-ray crystallography, indicated that the complex undergoes self-assembly by intermolecular N-H (. . .) I-Pt hydrogen bonding. MeI was also double oxidatively added to organodiplatinum(II) complex cis, cis-[Me2Pt(mu-SMe2)(mu-dppa)PtMe2], to give diorganoplatinum(IV) complex [Me3Pt(mu-dppa)(mu-I)(2)PtMe3], 4. The aryl analogue organodiplatinum(II) complex cis, cis-[(p-MeC6H4)(2)Pt(mu-SMe2)(mu-dppa) Pt(p-MeC6H4)(2)], 3b, was prepared by the reaction of cis-[Pt(p-MeC6H4) 2(SMe2)(2)] with half equiv. of dppa, but 3b refused to react with MeI, probably because of the steric effects of the aryl ligands. The tetramethyl complex [PtMe4(dppa)], 6, was prepared either by reaction of 5a with MeLi or by replacement of SMe2 in [Pt2Me8(mu-SMe2)(2)] with dppa. All the complexes were fully characterized in solution by multinuclear NMR (H-1, C-13, P-31 and Pt-195) methods and their coordination compared with that of the corresponding known dppm complexes.
APA:
Heinemann, F.W. (2007). Organoplatinum complexes containing bis(diphenylphosphino)amine as ligand: uncommon case of N-H center dot center dot center dot I-Pt hydrogen bonding. Dalton Transactions, 17, 1697-1704. https://doi.org/10.1039/b700009j
MLA:
Heinemann, Frank Wilhelm. "Organoplatinum complexes containing bis(diphenylphosphino)amine as ligand: uncommon case of N-H center dot center dot center dot I-Pt hydrogen bonding." Dalton Transactions 17 (2007): 1697-1704.
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