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“…Slipped aromatic π–π stacking between centrosymmetrically related pairs of pyrim­idine rings also occurs [centroid–centroid separation = 3.7634 (12)Å and slippage = 1.715 Å].…”
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“…A chain along the c axis is formed by C—H⋯N hydrogen-bonding inter­actions and a weak π–π inter­action is observed between the pyrimidine rings of two adjacent parallel chains [centroid–centroid distance = 3.722 (2) Å]. …”
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“…In the title mol­ecule, C(11)H(9)N(3)O(2)S, the pyridine and pyrimidine rings are almost parallel [dihedral angle = 6.7 (1)°]. …”
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“…In the title pyrimidine derivative, C(23)H(23)N(3)S(2), the phenyl­sulfanyl and benzyl­sulfanyl benzene rings are orientated away from the carbonitrile group and are twisted out of the plane of the central ring with dihedral angles of 77.66 (6) and 64.73 (5)°, respectively. …”
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“…One of the 4,6-(4-fluoro­phen­yl)pyrimidine groups is virtually planar, with dihedral angles between the pyrimidine and benzene groups of 4.00 (8) and 5.44 (8)°, wheares the other is non-planar with analogues dihedral angles of 18.69 (8) and 26.60 (8)°. …”
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“…The dihedral angle between the pyrimidine and benzene rings is 64.2 (3)°.…”
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“…Here, we perform a large-scale analysis to assess codon usage bias pattern of pyrimidine-ending codons in highly expressed genes in prokaryotes. …”
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“…The asymmetric unit of the title compound, 2C(5)H(6)ClN(3)O·C(4)H(6)O(4), consists of one 4-chloro-6-meth­oxy­pyrimidin-2-amine mol­ecule and one half-mol­ecule of succinic acid which lies about an inversion centre. …”
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“…In the title compound, C(12)H(11)ClFN(3), the benzene ring forms a dihedral angle of 72.43 (5)° with the pyrimidine ring. In the crystal, N—H⋯N hydrogen bonds link the mol­ecules into a chain running along the c axis.…”
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“…Each two of the four TAPH(+) cations form dimers via N—H⋯N hydrogen bonds between the amino groups and the unprotonated pyrimidine N atoms [graph-set motif R (2) (2)(8)]. The (TAPH(+))(2) dimers, in turn, form slightly offset infinite π–π stacks parallel to [010], with centroid–centroid distances between pyrimidine rings of 3.5128 (15) and 3.6288 (16) Å. …”
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“…BACKGROUND: The human protozoan parasites Leishmania are prototrophic for pyrimidines with the ability of both de novo biosynthesis and uptake of pyrimidines. …”
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“…In the title compound, C(8)H(8)N(4)S, the pyrazolo­[3,4-d]pyrimidine ring system is essentially planar, with a maximum deviation from the mean plane of 0.025 (3) Å. …”
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“…The pyrimidine derivative (4,6-dimethyl-N-phenyldiethyl pyrimidine, DPDP) was tested as a foliar spray fungicide at 50 mg l(−1) for protection of eggplant (Solanum melongena) from spot disease caused by Alternaria alternata. …”
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“…Here, we identified a new potential plant activator, 5-(cyclopropylmethyl)-6-methyl-2-(2-pyridyl)pyrimidin-4-ol, named PPA (pyrimidin-type plant activator). …”
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“…In the title compound, C(24)H(24)N(2)S, the dihedral angles between the central pyrimidine ring and pendant benzene rings are 18.46 (6) and 5.95 (6)°. …”
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