Redetermination of 2,2′-bipyridine-1,1′-diium dibromide
نویسندگان
چکیده
منابع مشابه
Redetermination of 2,2′-bipyridine-1,1′-diium dibromide
In the title mol-ecular salt, C(10)H(10)N(2) (2+)·2Br(-), the dihedral angle between the aromatic rings is 20.83 (14)° and the N-H groups have a transoid conformaton [N-C-C-N = 158.5 (3)°]. In the crystal, the cations are linked to the anions by two N-H⋯Br and five C-H⋯Br hydrogen bonds, generating corrugated sheets incorporating R(2) (1)(7), R(4) (2)(10), R(4) (2)(11) and two different R(4) (2...
متن کامل1,4-Dimethylpiperazine-1,4-diium dibromide dihydrate
In the title hydrated mol-ecular salt, C(6)H(16)N(2) (2+)·2Br(-)·2H(2)O, the complete 1,4-dimethyl-piperazine-1,4-diium dication is generated by crystallographic inversion symmetry and both exocyclic C-N bonds are in equatorial orientations. In the crystal, the components are linked by N-H⋯O and O-H⋯Br hydrogen bonds, generating chains propagating in [110].
متن کاملrac-2,2′-Bipiperidine-1,1′-diium dibromide
In the title compound, C(10)H(22)N(2) (2+)·2Br(-), a precursor in the synthesis of organocatalysts, the bipiperidinium ion is located on a twofold rotation axis which passes through the mid-point of the central C-C bond. The piperidinium ring adopts a chair conformation. In the crystal, the cations are linked together by Br(-) ions through N-H⋯Br hydrogen bonds, forming layers parallel to the a...
متن کامل4,4′-Bipyridine-1,1′-diium 2,3,5,6-tetrabromoterephthalate dihydrate
The title compound, C(10)H(10)N(2) (2+)·C(8)Br(4)O(4) (2-)·2H(2)O, consists of a tetra-bromo-terephthalate dianion, a 4,4'-bipyridinium dication and two solvent water mol-ecules. Crystallographic inversion centers are situated at the center of the aromatic ring of the dianion as well as at the midpoint of the carbon-carbon bond connecting the pyridine rings in the dication. In the crystal, inte...
متن کامل(2R,2′S)-2,2′-Bipiperidine-1,1′-diium dibromide
The title compound, C10H22N2 (2+)·2Br(-), was synthesized via reduction of 2,2'-dipyridyl with Ni-Al alloy/KOH, followed by separation of diastereoisomers (meso and rac) by recrystallization from ethanol. Although the two bridging C atoms are optically active, these two chiral centers adopt an (S,R) configuration; thus, the title compound contains an achiral meso form of 2,2'-bi-piperidine. Bot...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812040214