In the title compound, C(10)H(13)NO, the C-C-C-C torsion angle formed between the benzene ring and the butan-2-one oxime unit is 73.7 (2)°, with the latter lying above the plane through the benzene ring. In the crystal, inter-molecular O-H⋯N hydrogen bonds link pairs of mol-ecules into dimers, forming R(2) (2)(6) ring motifs which are stacked along the a axis.

This paper presents micro self-reconfigurable modular robotic systems using shape memory alloy (SMA). The system is designed so that various shapes can be autonomously formed by a group of identical mechanical units. The unit realizes rotational motion by using an actuator mechanism composed of two SMA torsion coil springs. We have realized micro-size prototype units and examined their fundamen...

The title cocrystal, C(10)H(8)N(2)·C(6)H(6)O(4), crystallizes with half-mol-ecules of 4,4'-bipyridine and trans,trans-hexa-2,4-dienedioic acid in the asymmetric unit, as each is located about a crystallographic inversion center. The bipyridine molecule is planar from symmetry. In the dicarboxylic acid molecule, the O-C-C-C torsion angle is -13.0 (2)°. In the crystal, O-H⋯N and C-H⋯O hydrogen bo...

The asymmetric unit of the title compound, C(14)H(14)ClNO(2)S, contains two independent mol-ecules, which are twisted at the S atoms with C-SO(2)-NH-C torsion angles of -69.4 (7)° and 66.0 (8)°. The sulfonyl and the anilino benzene rings are tilted relative to each other by 49.0 (4) and 61.7 (3)° in the two mol-ecules. In the crystal, the mol-ecules are linked into chains by N-H⋯O hydrogen bonds.

In the title compound, C(16)H(24)N(2), the aliphatic amine substituent is rotated almost orthogonally [C-C-C-C torsion angle = 75.7 (3)°] out of the plane of the indole unit. The amine N atom has a pyramidal configuration deviating by 0.380 (3) Å from the plane of the adjacent C atoms. All of the aliphatic groups are in extended transoid conformations. In the crystal, mol-ecules form chains alo...

The title compound, C(14)H(14)ClNO(2)S, contains two molecules in the asymmetric unit with different conformations. The C-SO(2)-NH-C torsion angles are 65.3 (2) and 54.6 (2)° and the aromatic rings are tilted relative to each other by 59.3 (1) and 45.8 (1)° in the two mol-ecules. In the crystal, inversion symmetry results in dimers linked by pairs of N-H⋯O hydrogen bonds for both molecules.

In the title compound, C(15)H(16)N(2)O(3)S, the central C-S(=O)(2)N(H)-C unit is twisted, with a C-S-N-C torsion angle of -56.4 (2)°. The benzene rings form a dihedral angle of 49.65 (15)° with each other. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating a three-dimensional network.

The asymmetric unit of the title compound, C(18)H(20)N(2)O(4), contains one half-mol-ecule. The mol-ecule lies on an inversion centre and is roughly planar, the chains between the two pyridine rings being only slightly twisted, with torsion angles ranging from 170.9 (1) to 177.2 (1)°. Weak C-H⋯O hydrogen bonds result in the formation of a three-dimensional network.

The title compounds, C18H22Cl2N2O2 and C20H28N2O2, respectively, are isomorphous. The molecules lie at general positions in the unit cell. In each structure, chemically equivalent but crystallographically inequivalent amine N atoms exhibit different degrees of pyramidalization. The structures exhibit weak NÐH N hydrogen bonding, which is in ̄uenced by the differences in hybridization around the ...

The title Schiff base compound, C25H20N2, crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. In both mol-ecules, the imine group is approximately coplanar with the pyridine ring, with N-C-C-N torsion angles of 170.1 (3) and -172.0 (3) Å. In the crystal, A and B dimers are linked by pairs of C-H⋯π inter-actions and further C-H⋯π bonds link the dimers into a three-dime...