Phosphorus-germanium bonds

Aldehydes and diethyl(triethylgermyl)phosphine give (38) while unsaturated aldehydes and ketones form 1,4-dipolar addition products (39), presumably via ionic cleavage of the germanium-phosphorus bond. Hydrolysis of these compounds produces the y-substituted phosphorus aldehydes or ketones. -... 

The reaction of phosphine (produced in situ from magnesium phosphide and hydrogen chloride in dioxan solution) with 1,5-diketones gives106 the phosphorina-none derivatives (104). Carbonyl compounds and heterocumulenes (e.g. CO2, CS2) insert into the germanium-phosphorus bond of germaphospholans to form derivatives of the germaphosphepin system [e.g. (105)].106>107... 

Element-element bonds, addition to G-G multiple bonds arsenic—selenium bonds, 10, 782 boron—boron bonds, 10, 727 boron—sulfur bonds, 10, 778 B-S and B-Ge bonds, 10, 758 chalcogen—chalcogen additions, 10, 752 germanium—germanium bonds, 10, 747 germanium-tin bonds, 10, 780 overview, 10, 725-787 phosphorus—phosphorus bonds, 10, 751 phosphorus—selenium bonds, 10, 782 phosphorus-sulfur bonds, 10, 781 Se-Si and Se-Ge bonds, 10, 779 silicon-germanium bonds, 10, 770 silicon-phosphorus bonds, 10, 780 silicon-silicon bonds, 10, 734 silicon-sulfur bonds, 10, 779 silicon-tin bonds, 10, 770 tin-boron bonds, 10, 767 tin-tin bonds, 10, 748... 

Homonuclear carbonyl dimers, palladium complexes, 8, 206 Homonuclear element-element bonds, addition to C-C multiple bonds boron-boron bonds, 10, 727 chalcogen-chalcogen additions, 10, 752 germanium-germanium bonds, 10, 747 phosphorus-phosphorus bonds, 10, 751 silicon—silicon bonds, 10, 734 tin—tin bonds, 10, 748... 

The direct linking of like atoms, such an essential feature of carbon chemistry, occurs to only a limited extent with other elements. Metal-metal bonds are not uncommon but they are always weak examples are found in the polynuclear carbonyls (p. 306) and compounds such as SugRg and PbgRfi (R = alkyl). Among the other non-metals catenation is displayed by boron, silicon, germanium, phosphorus and sulphur none of the substances... 

Fig. 5.3 (color online) Crystal structure of semiclathrate-I. A unit cell content is shown. Te-filled dodecahedra, cyan tellurium, green germanium/phosphorus, magenta bonds within the framework, gray host-guest bonds, red... 

Proof that a double bond is present is best illustrated by the reactions of a germanium phosphorus compound, an orange crystalline solid. If treated with HCl, HOH, or CH3OH, the compound undergoes an addition reaction similar to alkenes, and its orange color is discharged as it forms a saturated colorless product ... 

Escendie, 1., Courte, C., Stage, J., Andrianarison, M., and Andrinizake, 1. D. (1985). 2,2,-Dimesityl-l-(2,4,6-tri-tert-butyl phenyl) germa-phosphene The first stable compound with a germanium-phosphorus double bond, Am. Chem. Soc. 107,3378. 

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