Symmetric and dissymetric pyrazolyl-bridged rhodium dimers. Two X-ray dirhodium structures with short metal-metal interactions
摘要:
The molecular structure of complexes [{Rh(mu-pz*)(NBD)}(2)] (1a-7a) and [{Rh(mu-pz*)(CO)(2)}(2)] (1b-7b) (pz*=pyrazolate, 3,5-dimethylpyrazolate, 3(5)tert-butylpyrazolate, 3-methyl-5-tert-butylpyrazolate, 3(5)-phenylpyrazolate, 3-methyl-5-phenylpyrazolate and 3(5)-p-methoxyphenylpyrazolate) has been studied by IR and H-1 and C-13 NMR spectroscopies. H-1 NMR variable temperature experiments were also carried out. We also report the crystalline structure of two complexes isolated as unique configurational isomers, [{Rh(mu-bupz)(NBD)}(2)]. CH2Cl2 . H2O (3a), and [{Rh(mu-mbupz)(NBD)}(2)]. CH2Cl2 (4a).
Symmetric and dissymetric pyrazolyl-bridged rhodium dimers. Two X-ray dirhodium structures with short metal-metal interactions
摘要:
The molecular structure of complexes [{Rh(mu-pz*)(NBD)}(2)] (1a-7a) and [{Rh(mu-pz*)(CO)(2)}(2)] (1b-7b) (pz*=pyrazolate, 3,5-dimethylpyrazolate, 3(5)tert-butylpyrazolate, 3-methyl-5-tert-butylpyrazolate, 3(5)-phenylpyrazolate, 3-methyl-5-phenylpyrazolate and 3(5)-p-methoxyphenylpyrazolate) has been studied by IR and H-1 and C-13 NMR spectroscopies. H-1 NMR variable temperature experiments were also carried out. We also report the crystalline structure of two complexes isolated as unique configurational isomers, [{Rh(mu-bupz)(NBD)}(2)]. CH2Cl2 . H2O (3a), and [{Rh(mu-mbupz)(NBD)}(2)]. CH2Cl2 (4a).