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Synthese und Kristallstruktur der Rhenium(VII)‐Nitridchloride ReNCl 4 und ReNCl 4 ·H 2 O
Author(s) -
Binder Anja,
MaichleMössmer Cäcilia,
Niquet Elke,
Strähle Joachim
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800057
Subject(s) - rhenium , orthorhombic crystal system , crystallography , crystal structure , chemistry , octahedron , tetragonal crystal system , ampoule , ligand (biochemistry) , triple bond , bond length , formula unit , nitride , molecule , hydrogen bond , double bond , inorganic chemistry , polymer chemistry , biochemistry , receptor , organic chemistry , layer (electronics)
Syntheses and Crystal Structures of the Rhenium(VII) Nitride Chlorides ReNCl 4 and ReNCl 4 ·H 2 O Rhenium(VII) nitride chloride, ReNCl 4 ( 1 ) is obtained in form of brown needles with metallic luster by the reaction of ReCl 5 with Cl 3 VNCl at 140 °C under vacuum in a sealed glass ampoule. It crystallizes in the tetragonal space group I4 with the lattice parameters a = 826.7(4), c = 405.1(2) pm, and Z = 2. The square pyramidal molecules are connected by asymmetric nitrido bridges to form chains along the crystallographic c axis. The shorter Re‐N distance of 163.0(5) pm corresponds to a triple bond, while the pronounced longer distance of 242.0(5) pm can be interpreted with a weak donor bond. The reaction of ReCl 5 with VN at 170 °C under vacuum in a sealed glass ampoule yields red needles of ReNCl 4 ·H 2 O ( 2 ). It crystallizes in the orthorhombic space group Pnma with a = 1075.4(2), b = 1108.5(2), c = 547.7(5) pm and Z = 4. The Re atoms exhibit a distorted octahedral coordination with the aqua ligand in trans position to the nitrido ligand. The Re‐N triple bond has a bond distance of 166.1(11) pm. The complexes are connected by hydrogen bridges O‐H···N to form chains.