Second monoclinic modification of cyclo­hexane-1,1-dicarbonitrile

In the title compound, C8H10N2, the cyclo­hexane 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

2-Anilino-3-(2-hy­droxy­prop­yl)-4-methyl-1,3-thia­zol-3-ium chloride

In the title compound, C13H17N2OS+·Cl−, the thia­zolium ring mean plane makes a dihedral angle of 55.46 (9)° with the benzene ring. In the propanol group, the N—C—C—C and N—C—C—O torsion angles are 172.58 (15) and 52.9 (2)°, respectively, and the S—C—C—C torsion angle is 178.99 (18)°. In the crystal, mol­ecules are linked by O—H⋯Cl and N—H⋯Cl hydrogen bonds, forming zigzag chains along [001]. There is also a C—H⋯Cl inter­action present

N-tert-Butyl-3-mesitylpropanamide

In the title compound, C16H25NO, the N-tert-butyl­propanamide fragment is essentially planar, with the exception of two C atoms of the tert-butyl group (r.m.s. deviation = 0.005 Å), forming a dihedral angle of 84.09 (10)° with the plane of the mesityl fragment (r.m.s. deviation = 0.002 Å). The crystal packing is stabilized by an inter­molecular N—H⋯O hydrogen bond, which links the mol­ecules into chains with graph-set notation C(4) running parallel to the c axis

9-(5-Bromo-2-hy­droxy­phen­yl)-10-(2-hy­droxy­prop­yl)-3,3,6,6-tetra­methyl-1,2,3,4,5,6,7,8,9,10-deca­hydro­acridine-1,8-dione

The dihydro­pyridine ring in the title compound, C26H32BrNO4, adopts an envelope conformation with the methine C atom representing the flap. The cyclo­hexenone rings also adopt envelope conformations. The phenolic hy­droxy group forms an intra­molecular hydrogen bond to one of the two keto O atoms. Inter­molecular weak C—H⋯O hydrogen bonding is present in the crystal structure. The hy­droxy­propyl group is disordered over two sets of sites with an occupancy ratio of 0.636 (6):0.364 (6)

3-[2-Hy­droxy-3-(2,4,6-trimethyl­phen­yl)prop­yl]-3-methyl-1-phenyl­thio­urea

In the title compound, C20H26N2OS, four non-H atoms of the thio­urea unit are approximately planar (r.m.s. deviation = 0.005 Å); the phenyl and benzene rings are twisted out of this plane by 28.55 (7) and 60.00 (7)°, respectively. An intra­molecular N—H⋯O hydrogen bond occurs. The hy­droxy group is hydrogen bonded to the double-bond S atom of an inversion-related mol­ecule, generating a hydrogen-bonded dimer in the crystal structure

2,6-Di-tert-butyl-4-(3-chloro-2-hy­droxy­prop­yl)phenol

In the title 2-propanol derivative, C17H27ClO2, the two tert-butyl groups both have one methyl C atom lying in the plane of the aromatic ring. In the crystal, the phenol group forms a hydrogen bond to the hy­droxy O atom belonging to the alkyl substituent of an adjacent mol­ecule, forming a chain along the ac diagonal. The Cl atom is disordered over two positions in a 0.73 (4):0.27 (4) ratio

4a-Hy­droxy-3,3,6,6-tetra­methyl-9-[6-(3,3,6,6-tetra­methyl-1,8-dioxo-2,3,4,5,6,7,8,9-octa­hydro-1H-xanthen-9-yl)pyridin-2-yl]-2,3,4,4a,5,6,7,8,9,9a-deca­hydro-1H-xanthene-1,8-dione ethanol hemisolvate hemihydrate

The pyridine ring in the title compound, C39H47NO7·0.5C2H5OH·0.5 H2O, is connected to one 3,3,6,6-tetra­methyl-1,8-dioxoxanthenyl and one 4a-hy­droxy-3,3,6,6-tetra­methyl-1,8-dioxodeca­hydroxanthenyl substituent in the 2- and 6-positions of the ring. In the former substituent, the six-membered xanthenyl ring adopts a flattened envelope conformation (with the methine C atom as the flap) while in the latter, the six-membered xanthenyl ring adopts a twisted envelope conformation (with the C atom bearing the hy­droxy group representing the flap). The hy­droxy H atom forms an intra­molecular hydrogen bond to the pyridyl N atom. An ethanol solvent mol­ecule is disordered with respect to a water mol­ecule in a 1:1 ratio. The water mol­ecule itself is disordered over two positions of equal occupancy

1-Methyl­amino-3-(2,4,6-trimethyl­phen­yl)propan-2-ol

The methyl­amino­propyl chain in the title compound, C13H21NO, adopts an extended zigzag conformation and the N atom shows a trigonal coordination. The N atom acts as hydrogen-bond acceptor to the hy­droxy group of an adjacent mol­ecule, generating a helical chain running along the b axis. The amino H atom is not involved in hydrogen bonding

10-(2-Hy­droxy­eth­yl)-9-(2-hy­droxy­phen­yl)-3,3,6,6-tetra­methyl-1,2,3,4,5,6,7,8,9,10-deca­hydro­acridine-1,8-dione

The dihydro­pyridine ring in the title compound, C25H31NO4, adopts an envelope conformation with the methine C atom representing the flap. The cyclo­hexenone rings also adopt envelope conformations with the C atoms bearing the methyl C atoms representing the flaps. The phenolic hy­droxy group forms an intra­molecular hydrogen bond to one of the two keto O atoms. The hy­droxy group of the N-bonded alkyl chain forms an inter­molecular hydrogen bond to the other keto O atom of an adjacent mol­ecule. The latter hydrogen bond leads to the formation of a helical chain running along the b axis

4-(2,4,6-Trimethyl­benz­yl)-1,3-thia­zol-2-amine

The methyl­ene C atom in the title compound, C13H16N2S, is connected to a five-membered thia­zole ring and a mesityl substituent. The rings are aligned at 75.4 (1)°. The amino substitutent inter­acts with the ring N atom of an adjacent mol­ecule by an inter­molecular N—H⋯N hydrogen bond, generating a helical chain running along the b axis