t-3-Benzyl-r-2,c-6-bis­(4-methoxy­phen­yl)piperidin-4-one oxime

In the title mol­ecule, C26H28N2O3, the piperidine ring adopts a chair conformation. The two methoxy­phenyl groups attached to the piperidine ring at positions 2 and 6 have equatorial orientations, and make a dihedral angle of 80.72 (15)°. The benzyl group at position 3 has an equatorial orientation. The oxime group at position 4 has a bi­sectional orientation. The ring of the benzyl group makes dihedral angles of 64.71 (16) and 84.79 (17)° with the two benzene rings. Mol­ecules are linked by inter­molecular N—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds, and C—H⋯π inter­actions. There is also a C—H⋯O intra­molecular inter­action

2-(4-Fluoro­phen­yl)-4,5-dimethyl-1-(4-methyl­phen­yl)-1H-imidazole

In the title mol­ecule, C18H17FN2, the imidazole ring is essentially planar [maximum deviation of 0.005 (1) Å and makes dihedral angles of 72.33 (8) and 18.71 (8)° with the methyl­phenyl and fluoro­phenyl rings, respectively. The dihedral angle between the two benzene rings is 75.05 (7)°. The crystal packing is stabilized by inter­molecular C—H⋯N hydrogen bonds

t-3-Benzyl-r-2,c-6-bis­(4-methoxy­phen­yl)­piperidin-4-one

In the title compound, C26H27NO3, the piperidine ring adopts a chair conformation. The two methoxy­phenyl groups attached to the piperidine ring at positions 2 and 6 have equatorial orientations and make a dihedral angle of 87.33 (8)°. The benzyl group at position 3 has an equatorial orientation. The phenyl ring of the benzyl group makes dihedral angles of 75.60 (9) and 73.69 (9)° with the two benzene rings. Mol­ecules are linked by inter­molecular N—H⋯O and C—H⋯O hydrogen bonds and by C—H⋯π inter­actions

Design and Analysis of an Optimized Scheduling Approach using Decision Making over IoT (TOPSI) for Relay based Routing Protocols

This research work focuses on support towards QoS approaches over IoT using computational models based on scheduling schemes to enable service oriented systems. IoT system supports on application of day-to-day physical tasks with virtual objects which inter-connect to create opportunities for integration of world into computer-based systems. The QoS scheduling model TOPSI implements a top-down decision making process over top to bottom interconnected layers using service supportive optimization algorithms based on demandable QoS requirements and applications. TOPSI adopts Markov Decision Process (MDP) at the three layers from transport layer to application layer which identifies the QoS supportive metrics for IoT and maximizes the service quality at network layer. The connection cost over multiple sessions is stochastic in nature as service is supportive based on decision making algorithms. TOPSI uses QoS attributes adopted in traditional QoS mechanisms based on transmission of sensor data and decision making based on sensing ability. TOPSI model defines and measures the QoS metrics of IoT network using adaptive monitoring module at transport layer for the defined service in use. TOPSI shows optimized throughput for variable load in use, sessions and observed delay. TOPSI works on route identification, route binding, update and deletion process based on the validation of adaptive QoS metrics, before the optimal route selection process between source and destination. This research work discusses on the survey and analyzes the performance of TOPSI and RBL schemes. The simulation test beds and scenario mapping are carried out using Cooja network simulator

2-(4-Fluoro­phen­yl)-1-(4-meth­oxy­phen­yl)-4,5-dimethyl-1H-imidazole

In the title compound, C18H17FN2O, the imidazole ring makes dihedral angles of 76.46 (7) and 40.68 (7)° with the meth­oxy­phenyl and fluoro­phenyl rings, respectively. The dihedral angle between the two benzene rings is 71.25 (6)°

t-3-Pentyl-r-2,c-6-diphenyl­piperidin-4-one

In the title mol­ecule, C22H27NO, the piperidine ring adopts a chair conformation, with all substituents equatorial. The dihedral angle between the two phenyl rings is 56.90 (5)°. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds. A C—H⋯π inter­action involving the phenyl ring at the 6-position is also found in the crystal structure

1-(3,5-Dimethyl­phen­yl)-4,5-dimethyl-2-phenyl-1H-imidazole hemihydrate

In the title compound, C19H20N2·0.5H2O, the imidazole ring is essentially planar [maximum deviation = 0.005 (1) Å]. The imidazole ring makes dihedral angles of 67.46 (10) and 23.10 (11)° with the attached benzene and phenyl rings, respectively. The dihedral angle between the benzene and phenyl rings is 68.22 (10)°. Inter­molecular O—H⋯N and C—H⋯N hydrogen bonds are found in the crystal structure

4,5-Dimethyl-2-phenyl-1-(p-tol­yl)-1H-imidazole

In the title compound, C18H18N2, the imidazole ring is essentially planar [maximum deviation = 0.004 (1) Å] and makes dihedral angles of 68.91 (8) and 20.43 (9)° with the tolyl and phenyl rings, respectively. The dihedral angle between the latter rings is 73.62 (8)°. The crystal packing is stabilized by inter­molecular C—H⋯N hydrogen bonds

t-3-Ethyl-r-2,c-6-bis­(2-fur­yl)piperidin-4-one

In the title mol­ecule, C15H17NO3, the piperidine ring adopts a chair conformation. The dihedral angle between the two furyl rings is 72.4 (1)°. The ethyl group and the furyl rings have equatorial orientations. Mol­ecules are linked by N—H⋯O hydrogen bonds

2-(4-Fluoro­phen­yl)-1-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline monohydrate

In the title compound, C25H15FN4·H2O, the fused ring system is essentially planar [maximum deviation of 0.0822 (14) Å]. The imidazole ring makes dihedral angles of 76.83 (7) and 32.22 (7)° with the phenyl group attached to nitro­gen and the fluoro­benzene group to carbon, respectively. The dihedral angle between the two phenyl rings is 72.13 (7)°. Inter­molecular O—H⋯N, O—H⋯F, C—H⋯F, C—H⋯O and C—H⋯N hydrogen bonds are found in the crystal structure