The coordination chemistry of 1,1'-diisocyanoferrocene (1) was investigated. Its reaction with Cr(CO)5(THF) (2 equiv) affords (1)[Cr(CO)5]2, which exhibits eclipsed cyclopentadienyl rings with a synclinal arrangement of the two substituents. 1 behaves like an aryl isocyanide in this compound according to IR spectroscopic data, and its oxidation leads to a marked decrease of net electron donor a...

In the title mol-ecule, C(11)H(11)ClN(2)O, the pyrido[1,2-a]pyrimidine ring system is planar (maximum deviation = 0.0148 Å) and the methyl C and carbonyl O atoms are nearly coplanar to it. The chloro-ethyl side chain is in a synclinal conformation, nearly orthogonal to the pyrimidine ring, with a dihedral angle between the chloro-ethyl side chain and the pyrimidine ring of 88.5 (1)°. Weak inter...

The structural forms (folds and faults) in the Iraqi Kurdistan Region exhibit more complexity northern northeastern parts of region; accordingly, complicated geomorphic were developed too. This is attributed to collision Arabian Eurasian plates with a convergent boundary that runs about 35 – 40 km northeast studied area. Many long tight anticlines exist area, majority them very complex forms, s...

The geometric parameters of the mol-ecule of the title compound, C(14)H(16)O(2)P(2), are in the usual ranges. It is a meso compound with the two chiral P atoms having opposite configurations. The P-CH(2)-CH(2)-P chain adopts a trans conformation [torsion angle -178.59 (17)°]. The P=O bonds are almost coplanar with the adjacent phenyl ring [torsion angles = 3.8 (3) and 0.3 (3)°]. Whereas one of ...

The mol-ecule of the title heteroaryl chalcone, C(16)H(16)O(4)S, which consists of substituted thio-phene and benzene rings bridged by the prop-2-en-1-one group, is slightly twisted. The dihedral angle between the thio-phene and 3,4,5-trimethoxy-phenyl rings is 12.18 (4)°. The three meth-oxy groups have two different conformations; two meth-oxy groups are coplanar [C-O-C-C torsion angles = -1.3...

The title compound, C25H27NO4, has a flattened di-hydro-pyridine ring. The benzene and phenyl rings are synclinal to one another, forming a dihedral angle of 49.82 (8)°; the axis of the biphenyl rings makes an 81.05 (9)° angle to the plane of the di-hydro-pyridine ring. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chain motifs running along the a-axis direction. The chains are ...

The vertebral column of the Atlantic white-sided dolphin, Lagenorhynchus acutus, reflects the radical reorganization of the cetacean column for locomotion in water. Both posterior thoracic and anterior caudal vertebrae have been ‘‘lumbarized,’’ and discontinuities occur within the caudal series at the synclinal point and fluke base. Morphology changes subtly as body size increases. Neural proce...

In the title compound, C(15)H(13)ClO(3)S, the chloro-thio-phene and dimeth-oxy-phenyl groups are linked by a prop-2-en-1-one group. The C=C double bond exhibits an E conformation. The mol-ecule is non-planar, with a dihedral angle of 31.12 (5)° between the chloro-thio-phene and dimeth-oxy-phenyl rings. The meth-oxy group at position 3 is coplanar with the benzene ring to which it is attached, w...

Bottom simulating reflections (BSRs) interpreted in seismic data are one of the most used indicators for presence gas hydrates. In numerous hydrate provinces, including Hikurangi margin, east New Zealand, distinct and anomalous gaps reflectivity punctuate otherwise continuous BSRs. We undertake a stratigraphic structural interpretation dense grid two-dimensional reflection to investigate possib...

In this article, we for the first time fully describe geology and petrography of iron quartzite formation, localized in Southeast Guinea Simandou mountain range. region, a meridional distribution belt banded magnetite quartzites (itabirite) Lower Proterozoic metamorphic series has been mapped. The rocks form an extended (210 km) narrow (0.4-7 complex synclinal structure background Archean grani...