A second monoclinic modification of triphenylphosphine oxide hemihydrate
نویسندگان
چکیده
منابع مشابه
A second monoclinic modification of triphenylphosphine oxide hemihydrate
In the crystal of the title compound, C(18)H(15)OP·0.5H(2)O, a water molecule links to two adjacent triphenylphosphine molecules by way of O-H⋯O hydrogen bonds. The crystal is twinned, the minor twin component being 36%.
متن کاملSecond monoclinic modification of cyclohexane-1,1-dicarbonitrile
In the title compound, C(8)H(10)N(2), the cyclo-hexane ring adopts a chair conformation. he crystal structure of the previously reported monoclinic modification have intramolecular CN⋯CN and C-H⋯N interactions. These types of interaction are not present in this new modification whose crystal structure is built up by van der Waals interactions.
متن کاملA second monoclinic modification of phenyl quinoxalin-2-yl ether
The two aromatic systems in the title compound, C(14)H(10)N(2)O, enclose a dihedral angle of 77.9 (1)°, and the C-O-C inter-ring bond angle is 117.6 (1)°.
متن کاملCurcumenol from Curcuma zedoaria: a second monoclinic modification
The title compound, systematic name 9-isopropyl-idene-2,6-dimethyl-11-oxatricyclo-[6.2.1.0(1,5)]undec-6-en-8-ol, C(15)H(22)O(2), which crystallizes with two mol-ecules of similar conformation in the asymmetric unit, features three fused rings, two of which are five-membered and the third six-membered. Of the two five-membered rings, the one with an O atom has a distinct envelope shape (with the...
متن کاملAn 17O NMR and quantum chemical study of monoclinic and orthorhombic polymorphs of triphenylphosphine oxide.
Solid-state (17)O NMR spectroscopy is employed to characterize powdered samples of known monoclinic and orthorhombic modifications of (17)O-enriched triphenylphosphine oxide, Ph(3)PO. Precise data on the orientation-dependent (17)O electric field gradient (EFG) and chemical shift (CS) tensors are obtained for both polymorphs. While the (17)O nuclear quadrupolar coupling constants (C(Q)) are ess...
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: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809019254