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The synthesis and solid state structures of homo- and heteroleptic Zr and Ti complexes of 2-(diphenylphosphino)pyrrolide (NP) are reported. The homoleptic Zr(NP)4 (1) and Ti(NP)4 (2) are 8-coordinate in the solid state, and both show extremely long M–P bonds of approximately 2.9Å. In solution, the phosphine ligands in all complexes are labile: in the titanium complexes phosphine dissociation is rapid...
Purpose. To determine the crystal structure of the neotame anhydrate polymorph G and to evaluate X-ray powder diffractometry (XRPD) with molecular modeling as an alternative method for determining the crystal structure of this conformationally flexible dipeptide. Methods. The crystal structure of polymorph G was determined by single crystal X-ray crystallography (SCXRD) and also from the X-ray...
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