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Contributions to the Chemistry of Boron, 233Part 232: Ref.[1].. Reactions of a 1,2,3,4-Diphosphadiboretane with Some Carbonylmetal CompoundsDedicated to Professor Kurt Dehnicke on the occasion of his 65th birthday. (1996)

Grundei, Stefan ; Nöth, Heinrich ; Paine, Robert T.

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1233-1241

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ISSN: 0009-2940

Keywords: 1,2,3,4-Diphosphadiboretane-tetracarbonyliron complexes ; 1,3,2,4-Diphosphadiboretane-tetracarbonylchromium complexes ; 1,2,3,4-Diphosphadiboretane, isomerisation of ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: 1,2-Di-tert-butyl-3-(diisopropylamino)-4-(dimethylamino)- 1,2,3,4-diphosphadiboretane (1) reacts with Fe2(CO)9 to give two isomeric tetracarbonyliron complexes 2, 3 with P-Fe bonds and a bis(tetracarbonyliron) complex 4. In contrast, 1 displaces the olefinic ligand from tetracarbonyl(η4-norbornadiene)metal (metal = Cr, Mo) to form the tetracarbonylmetal complexes 5 and 6 with a rearranged ligand molecule, i.e. a 1,3,2,4-diphosphadiboretane. This process is accompanied by a change of the tert-butyl groups from an anti orientation in 1 to a syn orientation in 5 as shown by X-ray crystallography.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19961291015

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Contributions to the Chemistry of Boron, 214. Synthesis and Reaction Chemistry of Aminophosphanylboranes (1993)

Dou, Danan ; Westerhausen, Matthias ; Wood, Gary L. ; [et al.]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 379-397

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ISSN: 0009-2940

Keywords: Boranes, amino-, phosphanyl- ; Diphosphadiboretanes ; Triphosphatriborinanes ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Aminochlorophosphanylboranes, (R2N)B(Cl)P(SiMe3)2 (1a - d) and (R2N)B(Cl)PH2 (2a - d), are obtained from elimination reactions between aminochloroboranes and LiP(SiMe3)2 and LiPH2, respectively. Selected reaction chemistry of (i1-Pr2N)B(Cl)P(SiMe3)2] (1a) with NH3, Me3SiN3, Cr(CO)5 · NMe3, and W(CO)5 · NMe3 is described. The azide (i1-Pr2N)B(N3)P(SiMe3)2 (12a) is stable at 25°C; however, thermolysis at 80°C provides a novel six-membered ring compound [(i1-Pr2N)BN(SiMe3)P(SiMe3)]2 (13a). The reaction of (Ph2N)B(Cl)P(SiMe3)2 (1b) with LiP(SiMe3)2 produces the only isolable bis(phosphanyl)borane (5b), while combination of (R2N)B(Cl)Ph2 with LiPH2 · DME yields new diphosphadiboretanes 6 {(R2N)BPH}2 (R2N=i1-Pr2N, Ph2N and tmp=2,2,6,6-tetramethylpiperidino) and triphosphatriborinanes 7 {(R2N)BPH}3 (R2N=(Me3Si)2N, Me2N and Et2N). Two salts, [(i1-Pr2N) DME]2 (8a) and [tmpLi · DME]2 (8c) (DME=ethylene glycol dimethyl ether) are also isolated. The results of molecular structure determinations for [(i1-Pr2N)Bn(SiMe3)P(SiMe3)]2 (13a), [tmpBPH]2 (4c), [tmpBPH]2 · Cr(CO)5 (7c), {[(Me3Si)2N]BPH}3 (4d), {[(Me3Si)2N]BPH}3 · Cr(CO)5 (7d), (Ph2N)B[P(SiMe3)2]2 (5b), and [(i1-Pr2N) · DME]2 (8a) are discussed.

Additional Material: 7 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19931260215

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1,3,5-Triphenyl-2,4,6-trimesityl-1,3,5,2,4,6-triphosphatriborinane: A 6π-Electron Heteroaromatic LigandDedicated to Professor Dr. Dr. h. c. mult. E. 0. Fischer on the occasion of his 75th birthday. (1994)

Kaufmann, Bernhard ; Metzler, Nils ; Nöth, Heinrich ; [et al.]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 825-827

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ISSN: 0009-2940

Keywords: Chromium tricarbonyl(η6-1,3,5-triphenyl-2,4,6-trimesityl-1,3,5,2,4,6-triphosphatrnane)- ; 1,3,5,2,4,6-Triphosphatriborinane ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The preparation of tricarbonyl(η6-1,3,5-triphenyl-2,4,6-trimesityl-1,3,5,2,4,6-triphosphatriane)chromium (4) is reported. Its X-ray structure reveals an orientation of the Cr(CO)3 moiety with respect to the almost planar B3P3 ring typical of an arene metal tricarbonyl complex.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19941270506

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